{"subject":"physics","questions":[{"q":"A body covers 100 m in 5 s at constant speed. Find its speed.","o":["20 m/s","50 m/s","500 m/s","25 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 70 m in 5 s at constant speed. Find its speed.","o":["14 m/s","350 m/s","19 m/s","35 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 280 m in 20 s at constant speed. Find its speed.","o":["34 m/s","5600 m/s","14 m/s","140 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 240 m in 6 s at constant speed. Find its speed.","o":["1440 m/s","40 m/s","120 m/s","46 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 150 m in 15 s at constant speed. Find its speed.","o":["10 m/s","25 m/s","75 m/s","2250 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 180 m in 12 s at constant speed. Find its speed.","o":["90 m/s","15 m/s","27 m/s","2160 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 150 m in 5 s at constant speed. Find its speed.","o":["30 m/s","35 m/s","75 m/s","750 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 70 m in 7 s at constant speed. Find its speed.","o":["490 m/s","10 m/s","35 m/s","17 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 460 m in 5 s at constant speed. Find its speed.","o":["230 m/s","2300 m/s","97 m/s","92 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 370 m in 5 s at constant speed. Find its speed.","o":["79 m/s","74 m/s","185 m/s","1850 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 420 m in 20 s at constant speed. Find its speed.","o":["8400 m/s","41 m/s","21 m/s","210 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 550 m in 2 s at constant speed. Find its speed.","o":["277 m/s","275 m/s","1100 m/s","274 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 20 m in 5 s at constant speed. Find its speed.","o":["10 m/s","9 m/s","100 m/s","4 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 570 m in 3 s at constant speed. Find its speed.","o":["1710 m/s","190 m/s","285 m/s","193 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 270 m in 9 s at constant speed. Find its speed.","o":["135 m/s","30 m/s","2430 m/s","39 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 250 m in 5 s at constant speed. Find its speed.","o":["55 m/s","125 m/s","50 m/s","1250 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 40 m in 5 s at constant speed. Find its speed.","o":["13 m/s","200 m/s","20 m/s","8 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 360 m in 20 s at constant speed. Find its speed.","o":["7200 m/s","180 m/s","18 m/s","38 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 410 m in 10 s at constant speed. Find its speed.","o":["51 m/s","205 m/s","41 m/s","4100 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 300 m in 10 s at constant speed. Find its speed.","o":["3000 m/s","150 m/s","30 m/s","40 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 110 m in 11 s at constant speed. Find its speed.","o":["21 m/s","1210 m/s","55 m/s","10 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 560 m in 5 s at constant speed. Find its speed.","o":["2800 m/s","112 m/s","280 m/s","117 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 330 m in 11 s at constant speed. Find its speed.","o":["165 m/s","41 m/s","3630 m/s","30 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 210 m in 14 s at constant speed. Find its speed.","o":["29 m/s","105 m/s","2940 m/s","15 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 510 m in 15 s at constant speed. Find its speed.","o":["49 m/s","34 m/s","7650 m/s","255 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 190 m in 5 s at constant speed. Find its speed.","o":["950 m/s","38 m/s","43 m/s","95 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 360 m in 6 s at constant speed. Find its speed.","o":["2160 m/s","66 m/s","60 m/s","180 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 440 m in 2 s at constant speed. Find its speed.","o":["880 m/s","220 m/s","222 m/s","219 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 600 m in 12 s at constant speed. Find its speed.","o":["7200 m/s","62 m/s","300 m/s","50 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 520 m in 4 s at constant speed. Find its speed.","o":["134 m/s","2080 m/s","260 m/s","130 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 550 m in 10 s at constant speed. Find its speed.","o":["275 m/s","65 m/s","5500 m/s","55 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 590 m in 10 s at constant speed. Find its speed.","o":["59 m/s","5900 m/s","295 m/s","69 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 50 m in 10 s at constant speed. Find its speed.","o":["25 m/s","5 m/s","15 m/s","500 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 90 m in 9 s at constant speed. Find its speed.","o":["810 m/s","45 m/s","10 m/s","19 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 400 m in 16 s at constant speed. Find its speed.","o":["200 m/s","41 m/s","25 m/s","6400 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 480 m in 6 s at constant speed. Find its speed.","o":["2880 m/s","240 m/s","86 m/s","80 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 230 m in 2 s at constant speed. Find its speed.","o":["114 m/s","117 m/s","460 m/s","115 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 120 m in 8 s at constant speed. Find its speed.","o":["15 m/s","23 m/s","960 m/s","60 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 60 m in 5 s at constant speed. Find its speed.","o":["300 m/s","17 m/s","12 m/s","30 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 540 m in 5 s at constant speed. Find its speed.","o":["2700 m/s","113 m/s","108 m/s","270 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 240 m in 4 s at constant speed. Find its speed.","o":["120 m/s","960 m/s","60 m/s","64 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 570 m in 5 s at constant speed. Find its speed.","o":["119 m/s","114 m/s","285 m/s","2850 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 180 m in 2 s at constant speed. Find its speed.","o":["90 m/s","89 m/s","92 m/s","360 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 110 m in 5 s at constant speed. Find its speed.","o":["27 m/s","55 m/s","22 m/s","550 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 240 m in 16 s at constant speed. Find its speed.","o":["120 m/s","3840 m/s","15 m/s","31 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 160 m in 10 s at constant speed. Find its speed.","o":["80 m/s","26 m/s","16 m/s","1600 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 360 m in 3 s at constant speed. Find its speed.","o":["120 m/s","1080 m/s","123 m/s","180 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 280 m in 4 s at constant speed. Find its speed.","o":["1120 m/s","140 m/s","74 m/s","70 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 40 m in 10 s at constant speed. Find its speed.","o":["14 m/s","20 m/s","4 m/s","400 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 270 m in 3 s at constant speed. Find its speed.","o":["93 m/s","135 m/s","810 m/s","90 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 300 m in 5 s at constant speed. Find its speed.","o":["150 m/s","65 m/s","1500 m/s","60 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 60 m in 12 s at constant speed. Find its speed.","o":["5 m/s","17 m/s","30 m/s","720 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 250 m in 10 s at constant speed. Find its speed.","o":["25 m/s","2500 m/s","125 m/s","35 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 180 m in 20 s at constant speed. Find its speed.","o":["29 m/s","3600 m/s","9 m/s","90 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 330 m in 3 s at constant speed. Find its speed.","o":["165 m/s","113 m/s","110 m/s","990 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 150 m in 10 s at constant speed. Find its speed.","o":["25 m/s","15 m/s","1500 m/s","75 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 500 m in 20 s at constant speed. Find its speed.","o":["45 m/s","250 m/s","10000 m/s","25 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 110 m in 10 s at constant speed. Find its speed.","o":["1100 m/s","11 m/s","21 m/s","55 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 60 m in 6 s at constant speed. Find its speed.","o":["30 m/s","10 m/s","16 m/s","360 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 220 m in 5 s at constant speed. Find its speed.","o":["49 m/s","110 m/s","44 m/s","1100 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 430 m in 2 s at constant speed. Find its speed.","o":["215 m/s","860 m/s","214 m/s","217 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 380 m in 20 s at constant speed. Find its speed.","o":["19 m/s","39 m/s","7600 m/s","190 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 500 m in 10 s at constant speed. Find its speed.","o":["250 m/s","5000 m/s","60 m/s","50 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 540 m in 9 s at constant speed. Find its speed.","o":["4860 m/s","60 m/s","69 m/s","270 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 30 m in 10 s at constant speed. Find its speed.","o":["15 m/s","3 m/s","13 m/s","300 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 140 m in 4 s at constant speed. Find its speed.","o":["70 m/s","39 m/s","560 m/s","35 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 570 m in 10 s at constant speed. Find its speed.","o":["57 m/s","285 m/s","5700 m/s","67 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 230 m in 10 s at constant speed. Find its speed.","o":["115 m/s","23 m/s","33 m/s","2300 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 20 m in 20 s at constant speed. Find its speed.","o":["10 m/s","400 m/s","1 m/s","21 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 550 m in 11 s at constant speed. Find its speed.","o":["275 m/s","50 m/s","61 m/s","6050 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 40 m in 2 s at constant speed. Find its speed.","o":["20 m/s","80 m/s","19 m/s","22 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 490 m in 7 s at constant speed. Find its speed.","o":["77 m/s","70 m/s","3430 m/s","245 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 160 m in 4 s at constant speed. Find its speed.","o":["640 m/s","80 m/s","40 m/s","44 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 450 m in 10 s at constant speed. Find its speed.","o":["45 m/s","225 m/s","4500 m/s","55 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 360 m in 9 s at constant speed. Find its speed.","o":["180 m/s","3240 m/s","49 m/s","40 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 450 m in 3 s at constant speed. Find its speed.","o":["150 m/s","225 m/s","153 m/s","1350 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 580 m in 2 s at constant speed. Find its speed.","o":["1160 m/s","292 m/s","290 m/s","289 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 300 m in 20 s at constant speed. Find its speed.","o":["150 m/s","15 m/s","6000 m/s","35 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 540 m in 3 s at constant speed. Find its speed.","o":["270 m/s","183 m/s","1620 m/s","180 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 130 m in 10 s at constant speed. Find its speed.","o":["23 m/s","1300 m/s","65 m/s","13 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 220 m in 2 s at constant speed. Find its speed.","o":["112 m/s","110 m/s","109 m/s","440 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 430 m in 10 s at constant speed. Find its speed.","o":["215 m/s","43 m/s","53 m/s","4300 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 560 m in 8 s at constant speed. Find its speed.","o":["280 m/s","4480 m/s","70 m/s","78 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 200 m in 10 s at constant speed. Find its speed.","o":["30 m/s","100 m/s","20 m/s","2000 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 190 m in 10 s at constant speed. Find its speed.","o":["19 m/s","1900 m/s","95 m/s","29 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 520 m in 20 s at constant speed. Find its speed.","o":["10400 m/s","46 m/s","260 m/s","26 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 310 m in 10 s at constant speed. Find its speed.","o":["155 m/s","41 m/s","31 m/s","3100 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 510 m in 6 s at constant speed. Find its speed.","o":["91 m/s","255 m/s","85 m/s","3060 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 600 m in 4 s at constant speed. Find its speed.","o":["154 m/s","300 m/s","150 m/s","2400 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 280 m in 2 s at constant speed. Find its speed.","o":["140 m/s","560 m/s","142 m/s","139 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 280 m in 7 s at constant speed. Find its speed.","o":["1960 m/s","47 m/s","140 m/s","40 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 130 m in 5 s at constant speed. Find its speed.","o":["650 m/s","65 m/s","31 m/s","26 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 480 m in 10 s at constant speed. Find its speed.","o":["48 m/s","58 m/s","4800 m/s","240 m/s"],"a":0,"t":"Motion","d":"Easy"},{"q":"A body covers 240 m in 8 s at constant speed. Find its speed.","o":["1920 m/s","30 m/s","38 m/s","120 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 360 m in 4 s at constant speed. Find its speed.","o":["94 m/s","180 m/s","90 m/s","1440 m/s"],"a":2,"t":"Motion","d":"Easy"},{"q":"A body covers 460 m in 2 s at constant speed. Find its speed.","o":["232 m/s","230 m/s","229 m/s","920 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 450 m in 6 s at constant speed. Find its speed.","o":["225 m/s","81 m/s","2700 m/s","75 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 580 m in 10 s at constant speed. Find its speed.","o":["5800 m/s","58 m/s","68 m/s","290 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A body covers 560 m in 10 s at constant speed. Find its speed.","o":["66 m/s","5600 m/s","280 m/s","56 m/s"],"a":3,"t":"Motion","d":"Easy"},{"q":"A body covers 420 m in 2 s at constant speed. Find its speed.","o":["212 m/s","210 m/s","840 m/s","209 m/s"],"a":1,"t":"Motion","d":"Easy"},{"q":"A car accelerates uniformly from 4 m/s to 44 m/s in 10 s. Find its acceleration.","o":["4 m/s²","5 m/s²","6 m/s²","40 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 17 m/s to 31 m/s in 2 s. Find its acceleration.","o":["8 m/s²","7 m/s²","14 m/s²","9 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 10 m/s to 74 m/s in 8 s. Find its acceleration.","o":["10 m/s²","64 m/s²","9 m/s²","8 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 12 m/s to 26 m/s in 2 s. Find its acceleration.","o":["8 m/s²","9 m/s²","7 m/s²","14 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 7 m/s to 31 m/s in 4 s. Find its acceleration.","o":["8 m/s²","7 m/s²","24 m/s²","6 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 10 m/s to 45 m/s in 5 s. Find its acceleration.","o":["7 m/s²","9 m/s²","35 m/s²","8 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 2 m/s to 32 m/s in 2 s. Find its acceleration.","o":["16 m/s²","30 m/s²","15 m/s²","17 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 20 m/s to 28 m/s in 4 s. Find its acceleration.","o":["3 m/s²","2 m/s²","4 m/s²","8 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 15 m/s to 70 m/s in 5 s. Find its acceleration.","o":["12 m/s²","13 m/s²","55 m/s²","11 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 15 m/s to 42 m/s in 3 s. Find its acceleration.","o":["10 m/s²","9 m/s²","27 m/s²","11 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 18 m/s to 60 m/s in 7 s. Find its acceleration.","o":["42 m/s²","6 m/s²","7 m/s²","8 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 0 m/s to 64 m/s in 2 s. Find its acceleration.","o":["32 m/s²","34 m/s²","64 m/s²","33 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 15 m/s to 33 m/s in 3 s. Find its acceleration.","o":["7 m/s²","6 m/s²","8 m/s²","18 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 17 m/s to 35 m/s in 9 s. Find its acceleration.","o":["18 m/s²","4 m/s²","3 m/s²","2 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 0 m/s to 27 m/s in 3 s. Find its acceleration.","o":["9 m/s²","27 m/s²","10 m/s²","11 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 19 m/s to 76 m/s in 3 s. Find its acceleration.","o":["21 m/s²","20 m/s²","57 m/s²","19 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 1 m/s to 79 m/s in 3 s. Find its acceleration.","o":["27 m/s²","28 m/s²","78 m/s²","26 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 0 m/s to 48 m/s in 6 s. Find its acceleration.","o":["9 m/s²","48 m/s²","10 m/s²","8 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 4 m/s to 46 m/s in 6 s. Find its acceleration.","o":["8 m/s²","42 m/s²","9 m/s²","7 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 18 m/s to 34 m/s in 8 s. Find its acceleration.","o":["2 m/s²","3 m/s²","4 m/s²","16 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 11 m/s to 56 m/s in 3 s. Find its acceleration.","o":["15 m/s²","16 m/s²","45 m/s²","17 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 6 m/s to 66 m/s in 10 s. Find its acceleration.","o":["7 m/s²","8 m/s²","6 m/s²","60 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 2 m/s to 42 m/s in 8 s. Find its acceleration.","o":["40 m/s²","7 m/s²","6 m/s²","5 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 12 m/s to 54 m/s in 6 s. Find its acceleration.","o":["9 m/s²","8 m/s²","42 m/s²","7 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 0 m/s to 60 m/s in 2 s. Find its acceleration.","o":["60 m/s²","32 m/s²","30 m/s²","31 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 16 m/s to 80 m/s in 2 s. Find its acceleration.","o":["32 m/s²","34 m/s²","33 m/s²","64 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 12 m/s to 64 m/s in 2 s. Find its acceleration.","o":["28 m/s²","27 m/s²","26 m/s²","52 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 11 m/s to 67 m/s in 7 s. Find its acceleration.","o":["10 m/s²","8 m/s²","9 m/s²","56 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 7 m/s to 61 m/s in 9 s. Find its acceleration.","o":["54 m/s²","7 m/s²","6 m/s²","8 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 16 m/s to 68 m/s in 2 s. Find its acceleration.","o":["26 m/s²","27 m/s²","52 m/s²","28 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 14 m/s to 54 m/s in 2 s. Find its acceleration.","o":["40 m/s²","20 m/s²","21 m/s²","22 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 17 m/s to 41 m/s in 8 s. Find its acceleration.","o":["3 m/s²","4 m/s²","5 m/s²","24 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 1 m/s to 73 m/s in 2 s. Find its acceleration.","o":["36 m/s²","72 m/s²","38 m/s²","37 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 20 m/s to 65 m/s in 9 s. Find its acceleration.","o":["6 m/s²","5 m/s²","45 m/s²","7 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 7 m/s to 61 m/s in 3 s. Find its acceleration.","o":["20 m/s²","19 m/s²","54 m/s²","18 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 2 m/s to 42 m/s in 4 s. Find its acceleration.","o":["40 m/s²","12 m/s²","10 m/s²","11 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 2 m/s to 47 m/s in 5 s. Find its acceleration.","o":["45 m/s²","10 m/s²","9 m/s²","11 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 0 m/s to 63 m/s in 7 s. Find its acceleration.","o":["63 m/s²","10 m/s²","9 m/s²","11 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 2 m/s to 77 m/s in 3 s. Find its acceleration.","o":["27 m/s²","26 m/s²","25 m/s²","75 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 17 m/s to 52 m/s in 7 s. Find its acceleration.","o":["35 m/s²","7 m/s²","6 m/s²","5 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 14 m/s to 53 m/s in 3 s. Find its acceleration.","o":["15 m/s²","13 m/s²","39 m/s²","14 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 13 m/s to 37 m/s in 3 s. Find its acceleration.","o":["10 m/s²","9 m/s²","24 m/s²","8 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 20 m/s to 45 m/s in 5 s. Find its acceleration.","o":["7 m/s²","25 m/s²","6 m/s²","5 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 2 m/s to 58 m/s in 7 s. Find its acceleration.","o":["8 m/s²","56 m/s²","9 m/s²","10 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 10 m/s to 70 m/s in 2 s. Find its acceleration.","o":["32 m/s²","31 m/s²","60 m/s²","30 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 9 m/s to 51 m/s in 6 s. Find its acceleration.","o":["8 m/s²","42 m/s²","7 m/s²","9 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 4 m/s to 44 m/s in 4 s. Find its acceleration.","o":["40 m/s²","11 m/s²","12 m/s²","10 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 6 m/s to 48 m/s in 2 s. Find its acceleration.","o":["22 m/s²","21 m/s²","42 m/s²","23 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 2 m/s to 68 m/s in 6 s. Find its acceleration.","o":["13 m/s²","66 m/s²","11 m/s²","12 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 0 m/s to 40 m/s in 10 s. Find its acceleration.","o":["40 m/s²","6 m/s²","5 m/s²","4 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 0 m/s to 46 m/s in 2 s. Find its acceleration.","o":["24 m/s²","46 m/s²","25 m/s²","23 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 12 m/s to 52 m/s in 10 s. Find its acceleration.","o":["4 m/s²","6 m/s²","40 m/s²","5 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 17 m/s to 33 m/s in 4 s. Find its acceleration.","o":["4 m/s²","6 m/s²","5 m/s²","16 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 9 m/s to 79 m/s in 7 s. Find its acceleration.","o":["10 m/s²","70 m/s²","11 m/s²","12 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 6 m/s to 60 m/s in 6 s. Find its acceleration.","o":["9 m/s²","11 m/s²","10 m/s²","54 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 15 m/s to 35 m/s in 5 s. Find its acceleration.","o":["6 m/s²","5 m/s²","4 m/s²","20 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 8 m/s to 78 m/s in 7 s. Find its acceleration.","o":["10 m/s²","12 m/s²","70 m/s²","11 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 10 m/s to 65 m/s in 5 s. Find its acceleration.","o":["12 m/s²","55 m/s²","13 m/s²","11 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 5 m/s to 26 m/s in 3 s. Find its acceleration.","o":["8 m/s²","21 m/s²","9 m/s²","7 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 2 m/s to 74 m/s in 2 s. Find its acceleration.","o":["72 m/s²","37 m/s²","38 m/s²","36 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 17 m/s to 65 m/s in 6 s. Find its acceleration.","o":["10 m/s²","8 m/s²","9 m/s²","48 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 8 m/s to 50 m/s in 2 s. Find its acceleration.","o":["22 m/s²","21 m/s²","42 m/s²","23 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 3 m/s to 69 m/s in 3 s. Find its acceleration.","o":["66 m/s²","24 m/s²","22 m/s²","23 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 18 m/s to 72 m/s in 6 s. Find its acceleration.","o":["54 m/s²","9 m/s²","11 m/s²","10 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 11 m/s to 63 m/s in 4 s. Find its acceleration.","o":["52 m/s²","15 m/s²","13 m/s²","14 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 9 m/s to 45 m/s in 6 s. Find its acceleration.","o":["6 m/s²","36 m/s²","8 m/s²","7 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 14 m/s to 46 m/s in 4 s. Find its acceleration.","o":["32 m/s²","9 m/s²","10 m/s²","8 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 9 m/s to 25 m/s in 4 s. Find its acceleration.","o":["16 m/s²","4 m/s²","6 m/s²","5 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 18 m/s to 30 m/s in 4 s. Find its acceleration.","o":["12 m/s²","5 m/s²","3 m/s²","4 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 5 m/s to 55 m/s in 5 s. Find its acceleration.","o":["11 m/s²","10 m/s²","50 m/s²","12 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 7 m/s to 57 m/s in 5 s. Find its acceleration.","o":["50 m/s²","12 m/s²","10 m/s²","11 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 14 m/s to 74 m/s in 4 s. Find its acceleration.","o":["60 m/s²","16 m/s²","15 m/s²","17 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 8 m/s to 74 m/s in 2 s. Find its acceleration.","o":["34 m/s²","33 m/s²","35 m/s²","66 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 7 m/s to 63 m/s in 2 s. Find its acceleration.","o":["56 m/s²","30 m/s²","28 m/s²","29 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 8 m/s to 68 m/s in 10 s. Find its acceleration.","o":["6 m/s²","8 m/s²","7 m/s²","60 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 19 m/s to 67 m/s in 6 s. Find its acceleration.","o":["8 m/s²","48 m/s²","9 m/s²","10 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 0 m/s to 56 m/s in 4 s. Find its acceleration.","o":["16 m/s²","14 m/s²","56 m/s²","15 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 10 m/s to 58 m/s in 6 s. Find its acceleration.","o":["48 m/s²","8 m/s²","10 m/s²","9 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 3 m/s to 71 m/s in 2 s. Find its acceleration.","o":["36 m/s²","34 m/s²","35 m/s²","68 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 11 m/s to 79 m/s in 2 s. Find its acceleration.","o":["35 m/s²","34 m/s²","68 m/s²","36 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 12 m/s to 54 m/s in 2 s. Find its acceleration.","o":["21 m/s²","23 m/s²","42 m/s²","22 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 11 m/s to 43 m/s in 2 s. Find its acceleration.","o":["18 m/s²","32 m/s²","16 m/s²","17 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 7 m/s to 28 m/s in 3 s. Find its acceleration.","o":["7 m/s²","9 m/s²","8 m/s²","21 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 6 m/s to 72 m/s in 6 s. Find its acceleration.","o":["66 m/s²","13 m/s²","11 m/s²","12 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 11 m/s to 35 m/s in 6 s. Find its acceleration.","o":["24 m/s²","4 m/s²","5 m/s²","6 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 16 m/s to 40 m/s in 4 s. Find its acceleration.","o":["8 m/s²","6 m/s²","24 m/s²","7 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 13 m/s to 55 m/s in 3 s. Find its acceleration.","o":["16 m/s²","15 m/s²","42 m/s²","14 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 20 m/s to 68 m/s in 2 s. Find its acceleration.","o":["48 m/s²","26 m/s²","25 m/s²","24 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 18 m/s to 38 m/s in 2 s. Find its acceleration.","o":["20 m/s²","10 m/s²","11 m/s²","12 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 12 m/s to 78 m/s in 6 s. Find its acceleration.","o":["12 m/s²","66 m/s²","11 m/s²","13 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 7 m/s to 25 m/s in 9 s. Find its acceleration.","o":["4 m/s²","2 m/s²","18 m/s²","3 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 8 m/s to 74 m/s in 3 s. Find its acceleration.","o":["66 m/s²","23 m/s²","24 m/s²","22 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 20 m/s to 38 m/s in 2 s. Find its acceleration.","o":["10 m/s²","18 m/s²","11 m/s²","9 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 4 m/s to 38 m/s in 2 s. Find its acceleration.","o":["19 m/s²","17 m/s²","18 m/s²","34 m/s²"],"a":1,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 0 m/s to 45 m/s in 3 s. Find its acceleration.","o":["16 m/s²","45 m/s²","17 m/s²","15 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 2 m/s to 26 m/s in 8 s. Find its acceleration.","o":["4 m/s²","24 m/s²","5 m/s²","3 m/s²"],"a":3,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 3 m/s to 77 m/s in 2 s. Find its acceleration.","o":["37 m/s²","74 m/s²","38 m/s²","39 m/s²"],"a":0,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 12 m/s to 28 m/s in 4 s. Find its acceleration.","o":["5 m/s²","6 m/s²","4 m/s²","16 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 7 m/s to 70 m/s in 3 s. Find its acceleration.","o":["23 m/s²","22 m/s²","21 m/s²","63 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A car accelerates uniformly from 11 m/s to 67 m/s in 8 s. Find its acceleration.","o":["9 m/s²","56 m/s²","7 m/s²","8 m/s²"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 10 m/s and accelerates uniformly at 5 m/s² for 9 s. Find the distance covered.","o":["495 m","292.5 m","297.5 m","90 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 12 m/s and accelerates uniformly at 3 m/s² for 6 s. Find the distance covered.","o":["129 m","72 m","126 m","180 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 9 m/s and accelerates uniformly at 5 m/s² for 5 s. Find the distance covered.","o":["170 m","112.5 m","107.5 m","45 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 7 m/s and accelerates uniformly at 1 m/s² for 8 s. Find the distance covered.","o":["56 m","88 m","120 m","89 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 7 m/s and accelerates uniformly at 2 m/s² for 3 s. Find the distance covered.","o":["30 m","32 m","39 m","21 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 1 m/s and accelerates uniformly at 5 m/s² for 4 s. Find the distance covered.","o":["49 m","44 m","4 m","84 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 5 m/s and accelerates uniformly at 5 m/s² for 2 s. Find the distance covered.","o":["20 m","30 m","25 m","10 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 4 m/s and accelerates uniformly at 3 m/s² for 9 s. Find the distance covered.","o":["160.5 m","36 m","157.5 m","279 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 11 m/s and accelerates uniformly at 2 m/s² for 7 s. Find the distance covered.","o":["175 m","128 m","77 m","126 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 9 m/s and accelerates uniformly at 4 m/s² for 9 s. Find the distance covered.","o":["243 m","81 m","247 m","405 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 6 m/s and accelerates uniformly at 1 m/s² for 5 s. Find the distance covered.","o":["43.5 m","55 m","42.5 m","30 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 12 m/s and accelerates uniformly at 4 m/s² for 3 s. Find the distance covered.","o":["36 m","72 m","54 m","58 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 8 m/s and accelerates uniformly at 6 m/s² for 6 s. Find the distance covered.","o":["156 m","264 m","48 m","162 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 10 m/s and accelerates uniformly at 1 m/s² for 6 s. Find the distance covered.","o":["60 m","79 m","96 m","78 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 0 m/s and accelerates uniformly at 5 m/s² for 3 s. Find the distance covered.","o":["45 m","0 m","27.5 m","22.5 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 4 m/s and accelerates uniformly at 6 m/s² for 8 s. Find the distance covered.","o":["416 m","230 m","32 m","224 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 1 m/s and accelerates uniformly at 5 m/s² for 8 s. Find the distance covered.","o":["168 m","173 m","328 m","8 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 10 m/s and accelerates uniformly at 5 m/s² for 2 s. Find the distance covered.","o":["40 m","30 m","35 m","20 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 9 m/s and accelerates uniformly at 1 m/s² for 4 s. Find the distance covered.","o":["45 m","52 m","44 m","36 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 7 m/s and accelerates uniformly at 2 m/s² for 2 s. Find the distance covered.","o":["22 m","20 m","18 m","14 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 12 m/s and accelerates uniformly at 1 m/s² for 8 s. Find the distance covered.","o":["96 m","160 m","128 m","129 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 12 m/s and accelerates uniformly at 3 m/s² for 3 s. Find the distance covered.","o":["49.5 m","63 m","52.5 m","36 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 10 m/s and accelerates uniformly at 2 m/s² for 7 s. Find the distance covered.","o":["168 m","119 m","70 m","121 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 1 m/s and accelerates uniformly at 2 m/s² for 7 s. Find the distance covered.","o":["56 m","7 m","58 m","105 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 5 m/s and accelerates uniformly at 5 m/s² for 3 s. Find the distance covered.","o":["37.5 m","60 m","15 m","42.5 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 9 m/s and accelerates uniformly at 3 m/s² for 8 s. Find the distance covered.","o":["264 m","171 m","72 m","168 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 11 m/s and accelerates uniformly at 3 m/s² for 2 s. Find the distance covered.","o":["22 m","34 m","28 m","31 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 3 m/s and accelerates uniformly at 6 m/s² for 8 s. Find the distance covered.","o":["222 m","408 m","24 m","216 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 9 m/s and accelerates uniformly at 1 m/s² for 3 s. Find the distance covered.","o":["27 m","31.5 m","32.5 m","36 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 11 m/s and accelerates uniformly at 1 m/s² for 5 s. Find the distance covered.","o":["68.5 m","67.5 m","55 m","80 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 1 m/s and accelerates uniformly at 1 m/s² for 3 s. Find the distance covered.","o":["8.5 m","12 m","7.5 m","3 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 7 m/s and accelerates uniformly at 4 m/s² for 6 s. Find the distance covered.","o":["114 m","186 m","42 m","118 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 12 m/s and accelerates uniformly at 4 m/s² for 2 s. Find the distance covered.","o":["24 m","36 m","40 m","32 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 10 m/s and accelerates uniformly at 1 m/s² for 8 s. Find the distance covered.","o":["113 m","144 m","80 m","112 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 4 m/s and accelerates uniformly at 2 m/s² for 6 s. Find the distance covered.","o":["24 m","62 m","96 m","60 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 3 m/s and accelerates uniformly at 2 m/s² for 2 s. Find the distance covered.","o":["10 m","12 m","6 m","14 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 10 m/s and accelerates uniformly at 4 m/s² for 4 s. Find the distance covered.","o":["72 m","40 m","76 m","104 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 8 m/s and accelerates uniformly at 3 m/s² for 7 s. Find the distance covered.","o":["203 m","56 m","129.5 m","132.5 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 4 m/s and accelerates uniformly at 1 m/s² for 8 s. Find the distance covered.","o":["96 m","64 m","65 m","32 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 3 m/s and accelerates uniformly at 5 m/s² for 5 s. Find the distance covered.","o":["140 m","15 m","77.5 m","82.5 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 5 m/s and accelerates uniformly at 3 m/s² for 3 s. Find the distance covered.","o":["15 m","42 m","31.5 m","28.5 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 10 m/s and accelerates uniformly at 6 m/s² for 9 s. Find the distance covered.","o":["333 m","339 m","576 m","90 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 6 m/s and accelerates uniformly at 6 m/s² for 5 s. Find the distance covered.","o":["105 m","180 m","30 m","111 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 7 m/s and accelerates uniformly at 2 m/s² for 6 s. Find the distance covered.","o":["80 m","114 m","78 m","42 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 0 m/s and accelerates uniformly at 4 m/s² for 6 s. Find the distance covered.","o":["76 m","0 m","144 m","72 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 6 m/s and accelerates uniformly at 2 m/s² for 8 s. Find the distance covered.","o":["112 m","176 m","114 m","48 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 9 m/s and accelerates uniformly at 6 m/s² for 4 s. Find the distance covered.","o":["132 m","90 m","84 m","36 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 6 m/s and accelerates uniformly at 5 m/s² for 5 s. Find the distance covered.","o":["155 m","30 m","97.5 m","92.5 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 10 m/s and accelerates uniformly at 4 m/s² for 9 s. Find the distance covered.","o":["252 m","256 m","90 m","414 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 7 m/s and accelerates uniformly at 6 m/s² for 7 s. Find the distance covered.","o":["49 m","202 m","196 m","343 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 6 m/s and accelerates uniformly at 5 m/s² for 2 s. Find the distance covered.","o":["22 m","27 m","12 m","32 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 9 m/s and accelerates uniformly at 2 m/s² for 3 s. Find the distance covered.","o":["36 m","45 m","27 m","38 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 3 m/s and accelerates uniformly at 5 m/s² for 7 s. Find the distance covered.","o":["143.5 m","266 m","148.5 m","21 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 12 m/s and accelerates uniformly at 5 m/s² for 3 s. Find the distance covered.","o":["81 m","36 m","63.5 m","58.5 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 6 m/s and accelerates uniformly at 1 m/s² for 2 s. Find the distance covered.","o":["12 m","15 m","16 m","14 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 5 m/s and accelerates uniformly at 6 m/s² for 8 s. Find the distance covered.","o":["232 m","40 m","424 m","238 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 4 m/s and accelerates uniformly at 5 m/s² for 2 s. Find the distance covered.","o":["8 m","28 m","23 m","18 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 9 m/s and accelerates uniformly at 6 m/s² for 6 s. Find the distance covered.","o":["168 m","162 m","54 m","270 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 8 m/s and accelerates uniformly at 6 m/s² for 3 s. Find the distance covered.","o":["78 m","51 m","24 m","57 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 3 m/s and accelerates uniformly at 3 m/s² for 9 s. Find the distance covered.","o":["27 m","148.5 m","270 m","151.5 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 1 m/s and accelerates uniformly at 4 m/s² for 2 s. Find the distance covered.","o":["10 m","2 m","14 m","18 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 3 m/s and accelerates uniformly at 6 m/s² for 2 s. Find the distance covered.","o":["24 m","18 m","6 m","30 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 12 m/s and accelerates uniformly at 2 m/s² for 5 s. Find the distance covered.","o":["87 m","60 m","110 m","85 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 8 m/s and accelerates uniformly at 1 m/s² for 9 s. Find the distance covered.","o":["153 m","112.5 m","72 m","113.5 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 3 m/s and accelerates uniformly at 5 m/s² for 2 s. Find the distance covered.","o":["26 m","21 m","6 m","16 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 0 m/s and accelerates uniformly at 3 m/s² for 4 s. Find the distance covered.","o":["24 m","0 m","48 m","27 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 12 m/s and accelerates uniformly at 1 m/s² for 9 s. Find the distance covered.","o":["189 m","108 m","149.5 m","148.5 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 11 m/s and accelerates uniformly at 1 m/s² for 4 s. Find the distance covered.","o":["60 m","53 m","52 m","44 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 8 m/s and accelerates uniformly at 2 m/s² for 8 s. Find the distance covered.","o":["130 m","192 m","128 m","64 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 10 m/s and accelerates uniformly at 3 m/s² for 2 s. Find the distance covered.","o":["20 m","32 m","26 m","29 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 7 m/s and accelerates uniformly at 5 m/s² for 6 s. Find the distance covered.","o":["222 m","42 m","137 m","132 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 3 m/s and accelerates uniformly at 4 m/s² for 8 s. Find the distance covered.","o":["152 m","280 m","156 m","24 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 12 m/s and accelerates uniformly at 4 m/s² for 7 s. Find the distance covered.","o":["280 m","84 m","182 m","186 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 7 m/s and accelerates uniformly at 6 m/s² for 5 s. Find the distance covered.","o":["185 m","110 m","35 m","116 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 11 m/s and accelerates uniformly at 5 m/s² for 6 s. Find the distance covered.","o":["161 m","66 m","246 m","156 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 2 m/s and accelerates uniformly at 1 m/s² for 4 s. Find the distance covered.","o":["17 m","16 m","8 m","24 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 10 m/s and accelerates uniformly at 6 m/s² for 6 s. Find the distance covered.","o":["168 m","174 m","60 m","276 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 8 m/s and accelerates uniformly at 6 m/s² for 9 s. Find the distance covered.","o":["321 m","72 m","315 m","558 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 9 m/s and accelerates uniformly at 2 m/s² for 7 s. Find the distance covered.","o":["63 m","161 m","114 m","112 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 9 m/s and accelerates uniformly at 1 m/s² for 2 s. Find the distance covered.","o":["21 m","20 m","18 m","22 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 6 m/s and accelerates uniformly at 5 m/s² for 6 s. Find the distance covered.","o":["216 m","36 m","126 m","131 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 3 m/s and accelerates uniformly at 3 m/s² for 3 s. Find the distance covered.","o":["25.5 m","9 m","36 m","22.5 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 6 m/s and accelerates uniformly at 6 m/s² for 9 s. Find the distance covered.","o":["297 m","540 m","54 m","303 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 1 m/s and accelerates uniformly at 5 m/s² for 3 s. Find the distance covered.","o":["25.5 m","48 m","3 m","30.5 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 7 m/s and accelerates uniformly at 4 m/s² for 2 s. Find the distance covered.","o":["14 m","22 m","26 m","30 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 10 m/s and accelerates uniformly at 5 m/s² for 6 s. Find the distance covered.","o":["155 m","240 m","60 m","150 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 8 m/s and accelerates uniformly at 3 m/s² for 9 s. Find the distance covered.","o":["315 m","196.5 m","193.5 m","72 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 6 m/s and accelerates uniformly at 4 m/s² for 7 s. Find the distance covered.","o":["238 m","42 m","140 m","144 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 11 m/s and accelerates uniformly at 2 m/s² for 9 s. Find the distance covered.","o":["99 m","182 m","261 m","180 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 7 m/s and accelerates uniformly at 6 m/s² for 6 s. Find the distance covered.","o":["150 m","156 m","42 m","258 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 4 m/s and accelerates uniformly at 2 m/s² for 9 s. Find the distance covered.","o":["198 m","119 m","36 m","117 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 6 m/s and accelerates uniformly at 6 m/s² for 7 s. Find the distance covered.","o":["189 m","42 m","195 m","336 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 12 m/s and accelerates uniformly at 1 m/s² for 7 s. Find the distance covered.","o":["133 m","108.5 m","109.5 m","84 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 7 m/s and accelerates uniformly at 1 m/s² for 9 s. Find the distance covered.","o":["63 m","144 m","104.5 m","103.5 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 4 m/s and accelerates uniformly at 6 m/s² for 2 s. Find the distance covered.","o":["32 m","20 m","26 m","8 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 9 m/s and accelerates uniformly at 1 m/s² for 6 s. Find the distance covered.","o":["54 m","90 m","73 m","72 m"],"a":3,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 0 m/s and accelerates uniformly at 5 m/s² for 9 s. Find the distance covered.","o":["202.5 m","0 m","405 m","207.5 m"],"a":0,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 0 m/s and accelerates uniformly at 3 m/s² for 7 s. Find the distance covered.","o":["0 m","76.5 m","73.5 m","147 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 5 m/s and accelerates uniformly at 3 m/s² for 4 s. Find the distance covered.","o":["68 m","47 m","44 m","20 m"],"a":2,"t":"Motion","d":"Medium"},{"q":"A body starts with velocity 12 m/s and accelerates uniformly at 3 m/s² for 8 s. Find the distance covered.","o":["96 m","192 m","195 m","288 m"],"a":1,"t":"Motion","d":"Medium"},{"q":"What force is needed to give a mass of 17 kg an acceleration of 1 m/s²?","o":["18 N","170 N","17 N","34 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 6 kg an acceleration of 8 m/s²?","o":["14 N","54 N","48 N","480 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 46 kg an acceleration of 2 m/s²?","o":["48 N","920 N","138 N","92 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 7 kg an acceleration of 7 m/s²?","o":["49 N","56 N","14 N","490 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 57 kg an acceleration of 9 m/s²?","o":["570 N","66 N","513 N","5130 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 47 kg an acceleration of 7 m/s²?","o":["54 N","3290 N","376 N","329 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 54 kg an acceleration of 4 m/s²?","o":["216 N","270 N","2160 N","58 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 49 kg an acceleration of 4 m/s²?","o":["53 N","245 N","196 N","1960 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 14 kg an acceleration of 10 m/s²?","o":["1400 N","24 N","140 N","154 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 50 kg an acceleration of 11 m/s²?","o":["600 N","61 N","550 N","5500 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 45 kg an acceleration of 8 m/s²?","o":["360 N","405 N","53 N","3600 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 22 kg an acceleration of 10 m/s²?","o":["2200 N","242 N","32 N","220 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 24 kg an acceleration of 8 m/s²?","o":["216 N","192 N","1920 N","32 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 48 kg an acceleration of 5 m/s²?","o":["2400 N","53 N","288 N","240 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 35 kg an acceleration of 5 m/s²?","o":["1750 N","40 N","210 N","175 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 22 kg an acceleration of 7 m/s²?","o":["154 N","176 N","29 N","1540 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 55 kg an acceleration of 2 m/s²?","o":["110 N","165 N","57 N","1100 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 48 kg an acceleration of 10 m/s²?","o":["4800 N","528 N","58 N","480 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 45 kg an acceleration of 4 m/s²?","o":["225 N","1800 N","49 N","180 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 27 kg an acceleration of 1 m/s²?","o":["27 N","54 N","270 N","28 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 60 kg an acceleration of 11 m/s²?","o":["660 N","71 N","6600 N","720 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 32 kg an acceleration of 7 m/s²?","o":["39 N","256 N","2240 N","224 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 30 kg an acceleration of 7 m/s²?","o":["240 N","2100 N","210 N","37 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 4 kg an acceleration of 4 m/s²?","o":["160 N","16 N","8 N","20 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 53 kg an acceleration of 5 m/s²?","o":["265 N","58 N","318 N","2650 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 26 kg an acceleration of 2 m/s²?","o":["78 N","28 N","52 N","520 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 32 kg an acceleration of 8 m/s²?","o":["2560 N","256 N","40 N","288 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 54 kg an acceleration of 8 m/s²?","o":["486 N","4320 N","62 N","432 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 9 kg an acceleration of 3 m/s²?","o":["27 N","12 N","36 N","270 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 31 kg an acceleration of 12 m/s²?","o":["43 N","3720 N","372 N","403 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 48 kg an acceleration of 11 m/s²?","o":["528 N","59 N","5280 N","576 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 54 kg an acceleration of 5 m/s²?","o":["59 N","270 N","2700 N","324 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 51 kg an acceleration of 4 m/s²?","o":["2040 N","204 N","255 N","55 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 55 kg an acceleration of 11 m/s²?","o":["605 N","66 N","660 N","6050 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 51 kg an acceleration of 8 m/s²?","o":["59 N","459 N","4080 N","408 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 59 kg an acceleration of 10 m/s²?","o":["69 N","649 N","590 N","5900 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 29 kg an acceleration of 4 m/s²?","o":["33 N","1160 N","145 N","116 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 32 kg an acceleration of 9 m/s²?","o":["288 N","320 N","2880 N","41 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 60 kg an acceleration of 5 m/s²?","o":["360 N","3000 N","65 N","300 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 38 kg an acceleration of 4 m/s²?","o":["190 N","42 N","152 N","1520 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 46 kg an acceleration of 4 m/s²?","o":["1840 N","184 N","230 N","50 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 60 kg an acceleration of 9 m/s²?","o":["540 N","5400 N","69 N","600 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 22 kg an acceleration of 12 m/s²?","o":["264 N","2640 N","286 N","34 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 25 kg an acceleration of 7 m/s²?","o":["32 N","175 N","1750 N","200 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 3 kg an acceleration of 1 m/s²?","o":["6 N","4 N","30 N","3 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 60 kg an acceleration of 1 m/s²?","o":["61 N","600 N","60 N","120 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 20 kg an acceleration of 9 m/s²?","o":["1800 N","180 N","29 N","200 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 24 kg an acceleration of 9 m/s²?","o":["2160 N","33 N","240 N","216 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 4 kg an acceleration of 5 m/s²?","o":["9 N","200 N","20 N","24 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 40 kg an acceleration of 7 m/s²?","o":["320 N","280 N","47 N","2800 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 55 kg an acceleration of 5 m/s²?","o":["2750 N","330 N","275 N","60 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 22 kg an acceleration of 9 m/s²?","o":["198 N","31 N","220 N","1980 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 39 kg an acceleration of 3 m/s²?","o":["1170 N","156 N","42 N","117 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 39 kg an acceleration of 7 m/s²?","o":["312 N","2730 N","46 N","273 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 32 kg an acceleration of 11 m/s²?","o":["384 N","43 N","3520 N","352 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 54 kg an acceleration of 3 m/s²?","o":["1620 N","57 N","216 N","162 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 21 kg an acceleration of 9 m/s²?","o":["210 N","30 N","1890 N","189 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 54 kg an acceleration of 12 m/s²?","o":["66 N","648 N","702 N","6480 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 25 kg an acceleration of 10 m/s²?","o":["250 N","275 N","2500 N","35 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 58 kg an acceleration of 2 m/s²?","o":["174 N","60 N","1160 N","116 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 28 kg an acceleration of 1 m/s²?","o":["280 N","56 N","29 N","28 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 21 kg an acceleration of 6 m/s²?","o":["27 N","147 N","126 N","1260 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 58 kg an acceleration of 12 m/s²?","o":["754 N","70 N","696 N","6960 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 23 kg an acceleration of 10 m/s²?","o":["230 N","33 N","253 N","2300 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 42 kg an acceleration of 8 m/s²?","o":["378 N","3360 N","50 N","336 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 45 kg an acceleration of 2 m/s²?","o":["90 N","900 N","47 N","135 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 16 kg an acceleration of 2 m/s²?","o":["320 N","18 N","48 N","32 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 20 kg an acceleration of 3 m/s²?","o":["80 N","23 N","600 N","60 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 8 kg an acceleration of 3 m/s²?","o":["32 N","24 N","240 N","11 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 35 kg an acceleration of 11 m/s²?","o":["3850 N","46 N","385 N","420 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 25 kg an acceleration of 6 m/s²?","o":["175 N","1500 N","150 N","31 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 59 kg an acceleration of 2 m/s²?","o":["177 N","61 N","118 N","1180 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 11 kg an acceleration of 9 m/s²?","o":["20 N","990 N","99 N","110 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 41 kg an acceleration of 4 m/s²?","o":["45 N","1640 N","164 N","205 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 28 kg an acceleration of 9 m/s²?","o":["37 N","2520 N","280 N","252 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 47 kg an acceleration of 11 m/s²?","o":["517 N","564 N","58 N","5170 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 37 kg an acceleration of 7 m/s²?","o":["44 N","296 N","2590 N","259 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 4 kg an acceleration of 1 m/s²?","o":["4 N","8 N","40 N","5 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 9 kg an acceleration of 2 m/s²?","o":["27 N","18 N","11 N","180 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 10 kg an acceleration of 2 m/s²?","o":["30 N","12 N","20 N","200 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 29 kg an acceleration of 9 m/s²?","o":["2610 N","261 N","38 N","290 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 18 kg an acceleration of 2 m/s²?","o":["54 N","36 N","20 N","360 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 4 kg an acceleration of 7 m/s²?","o":["32 N","280 N","28 N","11 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 50 kg an acceleration of 1 m/s²?","o":["51 N","50 N","500 N","100 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 52 kg an acceleration of 3 m/s²?","o":["1560 N","208 N","55 N","156 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 27 kg an acceleration of 4 m/s²?","o":["1080 N","31 N","135 N","108 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 20 kg an acceleration of 7 m/s²?","o":["160 N","1400 N","27 N","140 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 4 kg an acceleration of 11 m/s²?","o":["440 N","48 N","15 N","44 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 59 kg an acceleration of 9 m/s²?","o":["5310 N","68 N","531 N","590 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 22 kg an acceleration of 5 m/s²?","o":["132 N","110 N","27 N","1100 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 5 kg an acceleration of 3 m/s²?","o":["20 N","15 N","8 N","150 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 4 kg an acceleration of 9 m/s²?","o":["36 N","360 N","40 N","13 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 52 kg an acceleration of 12 m/s²?","o":["64 N","676 N","6240 N","624 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 17 kg an acceleration of 10 m/s²?","o":["187 N","27 N","170 N","1700 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 17 kg an acceleration of 2 m/s²?","o":["34 N","340 N","19 N","51 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 45 kg an acceleration of 5 m/s²?","o":["225 N","2250 N","50 N","270 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 29 kg an acceleration of 12 m/s²?","o":["41 N","3480 N","348 N","377 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 9 kg an acceleration of 6 m/s²?","o":["15 N","54 N","540 N","63 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 50 kg an acceleration of 6 m/s²?","o":["300 N","56 N","3000 N","350 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"What force is needed to give a mass of 21 kg an acceleration of 12 m/s²?","o":["252 N","2520 N","33 N","273 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 27 kg. (g = 10 m/s²)","o":["243 N","27 N","2700 N","270 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 79 kg. (g = 10 m/s²)","o":["790 N","79 N","7900 N","711 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 22 kg. (g = 10 m/s²)","o":["198 N","220 N","2200 N","22 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 2 kg. (g = 10 m/s²)","o":["18 N","2 N","200 N","20 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 66 kg. (g = 10 m/s²)","o":["66 N","594 N","660 N","6600 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 86 kg. (g = 10 m/s²)","o":["860 N","8600 N","774 N","86 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 62 kg. (g = 10 m/s²)","o":["620 N","62 N","558 N","6200 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 38 kg. (g = 10 m/s²)","o":["3800 N","380 N","342 N","38 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 35 kg. (g = 10 m/s²)","o":["35 N","315 N","350 N","3500 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 80 kg. (g = 10 m/s²)","o":["800 N","720 N","8000 N","80 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 81 kg. (g = 10 m/s²)","o":["81 N","8100 N","729 N","810 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 74 kg. (g = 10 m/s²)","o":["666 N","7400 N","740 N","74 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 44 kg. (g = 10 m/s²)","o":["440 N","4400 N","396 N","44 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 83 kg. (g = 10 m/s²)","o":["830 N","747 N","8300 N","83 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 52 kg. (g = 10 m/s²)","o":["468 N","52 N","5200 N","520 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 88 kg. (g = 10 m/s²)","o":["880 N","88 N","792 N","8800 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 77 kg. (g = 10 m/s²)","o":["693 N","770 N","77 N","7700 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 6 kg. (g = 10 m/s²)","o":["54 N","6 N","60 N","600 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 58 kg. (g = 10 m/s²)","o":["58 N","522 N","5800 N","580 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 72 kg. (g = 10 m/s²)","o":["720 N","648 N","72 N","7200 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 37 kg. (g = 10 m/s²)","o":["333 N","3700 N","370 N","37 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 40 kg. (g = 10 m/s²)","o":["4000 N","400 N","360 N","40 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 33 kg. (g = 10 m/s²)","o":["3300 N","33 N","330 N","297 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 39 kg. (g = 10 m/s²)","o":["351 N","39 N","3900 N","390 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 25 kg. (g = 10 m/s²)","o":["25 N","2500 N","225 N","250 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 76 kg. (g = 10 m/s²)","o":["684 N","760 N","76 N","7600 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 13 kg. (g = 10 m/s²)","o":["1300 N","117 N","130 N","13 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 9 kg. (g = 10 m/s²)","o":["81 N","9 N","90 N","900 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 60 kg. (g = 10 m/s²)","o":["600 N","6000 N","60 N","540 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 34 kg. (g = 10 m/s²)","o":["34 N","340 N","3400 N","306 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 49 kg. (g = 10 m/s²)","o":["49 N","490 N","4900 N","441 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 82 kg. (g = 10 m/s²)","o":["82 N","8200 N","820 N","738 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 3 kg. (g = 10 m/s²)","o":["30 N","300 N","27 N","3 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 68 kg. (g = 10 m/s²)","o":["612 N","6800 N","680 N","68 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 87 kg. (g = 10 m/s²)","o":["8700 N","783 N","870 N","87 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 17 kg. (g = 10 m/s²)","o":["17 N","170 N","153 N","1700 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 12 kg. (g = 10 m/s²)","o":["108 N","12 N","1200 N","120 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 67 kg. (g = 10 m/s²)","o":["670 N","6700 N","67 N","603 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 57 kg. (g = 10 m/s²)","o":["5700 N","570 N","513 N","57 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 46 kg. (g = 10 m/s²)","o":["460 N","46 N","4600 N","414 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 69 kg. (g = 10 m/s²)","o":["6900 N","69 N","690 N","621 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 78 kg. (g = 10 m/s²)","o":["78 N","780 N","702 N","7800 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 21 kg. (g = 10 m/s²)","o":["21 N","210 N","2100 N","189 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 43 kg. (g = 10 m/s²)","o":["43 N","387 N","4300 N","430 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 41 kg. (g = 10 m/s²)","o":["41 N","4100 N","410 N","369 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 26 kg. (g = 10 m/s²)","o":["234 N","2600 N","260 N","26 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 51 kg. (g = 10 m/s²)","o":["459 N","510 N","5100 N","51 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 90 kg. (g = 10 m/s²)","o":["90 N","9000 N","900 N","810 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 84 kg. (g = 10 m/s²)","o":["84 N","8400 N","756 N","840 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 71 kg. (g = 10 m/s²)","o":["7100 N","639 N","710 N","71 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 18 kg. (g = 10 m/s²)","o":["18 N","162 N","180 N","1800 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 56 kg. (g = 10 m/s²)","o":["560 N","5600 N","56 N","504 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 48 kg. (g = 10 m/s²)","o":["432 N","480 N","4800 N","48 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 65 kg. (g = 10 m/s²)","o":["6500 N","65 N","585 N","650 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 15 kg. (g = 10 m/s²)","o":["150 N","15 N","135 N","1500 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 7 kg. (g = 10 m/s²)","o":["700 N","7 N","70 N","63 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 64 kg. (g = 10 m/s²)","o":["6400 N","640 N","576 N","64 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 55 kg. (g = 10 m/s²)","o":["550 N","495 N","5500 N","55 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 63 kg. (g = 10 m/s²)","o":["6300 N","63 N","630 N","567 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 85 kg. (g = 10 m/s²)","o":["85 N","850 N","8500 N","765 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 45 kg. (g = 10 m/s²)","o":["450 N","4500 N","45 N","405 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 50 kg. (g = 10 m/s²)","o":["500 N","5000 N","50 N","450 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 23 kg. (g = 10 m/s²)","o":["207 N","23 N","2300 N","230 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 75 kg. (g = 10 m/s²)","o":["7500 N","75 N","675 N","750 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 8 kg. (g = 10 m/s²)","o":["800 N","80 N","72 N","8 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 32 kg. (g = 10 m/s²)","o":["32 N","3200 N","320 N","288 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 59 kg. (g = 10 m/s²)","o":["5900 N","59 N","590 N","531 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 24 kg. (g = 10 m/s²)","o":["240 N","2400 N","216 N","24 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 54 kg. (g = 10 m/s²)","o":["54 N","486 N","540 N","5400 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 36 kg. (g = 10 m/s²)","o":["36 N","360 N","324 N","3600 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 73 kg. (g = 10 m/s²)","o":["730 N","657 N","7300 N","73 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 53 kg. (g = 10 m/s²)","o":["5300 N","477 N","530 N","53 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 10 kg. (g = 10 m/s²)","o":["90 N","1000 N","10 N","100 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 11 kg. (g = 10 m/s²)","o":["11 N","110 N","99 N","1100 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 31 kg. (g = 10 m/s²)","o":["31 N","279 N","3100 N","310 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 30 kg. (g = 10 m/s²)","o":["300 N","30 N","270 N","3000 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 42 kg. (g = 10 m/s²)","o":["4200 N","420 N","378 N","42 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 5 kg. (g = 10 m/s²)","o":["500 N","5 N","45 N","50 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 29 kg. (g = 10 m/s²)","o":["29 N","290 N","261 N","2900 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 19 kg. (g = 10 m/s²)","o":["171 N","1900 N","190 N","19 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 4 kg. (g = 10 m/s²)","o":["4 N","40 N","400 N","36 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 70 kg. (g = 10 m/s²)","o":["630 N","700 N","70 N","7000 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 61 kg. (g = 10 m/s²)","o":["549 N","6100 N","61 N","610 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 20 kg. (g = 10 m/s²)","o":["2000 N","200 N","20 N","180 N"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 47 kg. (g = 10 m/s²)","o":["4700 N","47 N","470 N","423 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 89 kg. (g = 10 m/s²)","o":["890 N","801 N","89 N","8900 N"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 28 kg. (g = 10 m/s²)","o":["28 N","252 N","280 N","2800 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 14 kg. (g = 10 m/s²)","o":["14 N","126 N","140 N","1400 N"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Calculate the weight of a body of mass 16 kg. (g = 10 m/s²)","o":["16 N","144 N","1600 N","160 N"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"A force of 12 N moves a body 3 m in the direction of the force. Calculate the work done.","o":["18 J","72 J","15 J","36 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 39 N moves a body 15 m in the direction of the force. Calculate the work done.","o":["1170 J","54 J","588 J","585 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 17 N moves a body 34 m in the direction of the force. Calculate the work done.","o":["578 J","51 J","289 J","1156 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 29 N moves a body 9 m in the direction of the force. Calculate the work done.","o":["522 J","261 J","264 J","38 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 50 N moves a body 36 m in the direction of the force. Calculate the work done.","o":["1800 J","900 J","3600 J","86 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 60 N moves a body 34 m in the direction of the force. Calculate the work done.","o":["1020 J","2040 J","94 J","4080 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 12 N moves a body 19 m in the direction of the force. Calculate the work done.","o":["456 J","228 J","31 J","114 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 22 N moves a body 8 m in the direction of the force. Calculate the work done.","o":["88 J","30 J","352 J","176 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 23 N moves a body 7 m in the direction of the force. Calculate the work done.","o":["161 J","30 J","164 J","322 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 54 N moves a body 35 m in the direction of the force. Calculate the work done.","o":["1890 J","89 J","945 J","3780 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 73 N moves a body 18 m in the direction of the force. Calculate the work done.","o":["657 J","2628 J","91 J","1314 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 90 N moves a body 25 m in the direction of the force. Calculate the work done.","o":["115 J","4500 J","2250 J","1125 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 35 N moves a body 40 m in the direction of the force. Calculate the work done.","o":["700 J","1400 J","2800 J","75 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 66 N moves a body 39 m in the direction of the force. Calculate the work done.","o":["1287 J","5148 J","2574 J","105 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 81 N moves a body 37 m in the direction of the force. Calculate the work done.","o":["118 J","5994 J","3000 J","2997 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 90 N moves a body 8 m in the direction of the force. Calculate the work done.","o":["1440 J","98 J","720 J","360 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 87 N moves a body 12 m in the direction of the force. Calculate the work done.","o":["99 J","522 J","2088 J","1044 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 23 N moves a body 20 m in the direction of the force. Calculate the work done.","o":["43 J","460 J","920 J","230 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 13 N moves a body 5 m in the direction of the force. Calculate the work done.","o":["65 J","18 J","68 J","130 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 65 N moves a body 16 m in the direction of the force. Calculate the work done.","o":["81 J","520 J","1040 J","2080 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 3 N moves a body 20 m in the direction of the force. Calculate the work done.","o":["120 J","30 J","60 J","23 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 6 N moves a body 33 m in the direction of the force. Calculate the work done.","o":["396 J","99 J","198 J","39 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 36 N moves a body 38 m in the direction of the force. Calculate the work done.","o":["1368 J","74 J","2736 J","684 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 15 N moves a body 5 m in the direction of the force. Calculate the work done.","o":["78 J","75 J","20 J","150 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 50 N moves a body 12 m in the direction of the force. Calculate the work done.","o":["300 J","1200 J","62 J","600 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 42 N moves a body 2 m in the direction of the force. Calculate the work done.","o":["42 J","84 J","168 J","44 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 66 N moves a body 7 m in the direction of the force. Calculate the work done.","o":["231 J","924 J","73 J","462 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 87 N moves a body 23 m in the direction of the force. Calculate the work done.","o":["2004 J","2001 J","4002 J","110 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 21 N moves a body 5 m in the direction of the force. Calculate the work done.","o":["26 J","210 J","108 J","105 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 5 N moves a body 32 m in the direction of the force. Calculate the work done.","o":["37 J","80 J","160 J","320 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 8 N moves a body 2 m in the direction of the force. Calculate the work done.","o":["32 J","8 J","16 J","10 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 8 N moves a body 40 m in the direction of the force. Calculate the work done.","o":["160 J","48 J","640 J","320 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 32 N moves a body 10 m in the direction of the force. Calculate the work done.","o":["640 J","160 J","320 J","42 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 73 N moves a body 9 m in the direction of the force. Calculate the work done.","o":["660 J","657 J","1314 J","82 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 8 N moves a body 27 m in the direction of the force. Calculate the work done.","o":["35 J","432 J","216 J","108 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 33 N moves a body 16 m in the direction of the force. Calculate the work done.","o":["1056 J","264 J","528 J","49 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 75 N moves a body 8 m in the direction of the force. Calculate the work done.","o":["1200 J","300 J","83 J","600 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 13 N moves a body 25 m in the direction of the force. Calculate the work done.","o":["328 J","325 J","650 J","38 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 39 N moves a body 2 m in the direction of the force. Calculate the work done.","o":["156 J","39 J","78 J","41 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 28 N moves a body 24 m in the direction of the force. Calculate the work done.","o":["52 J","1344 J","672 J","336 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 64 N moves a body 23 m in the direction of the force. Calculate the work done.","o":["736 J","1472 J","2944 J","87 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 54 N moves a body 28 m in the direction of the force. Calculate the work done.","o":["756 J","82 J","3024 J","1512 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 27 N moves a body 6 m in the direction of the force. Calculate the work done.","o":["162 J","324 J","33 J","81 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 69 N moves a body 2 m in the direction of the force. Calculate the work done.","o":["138 J","71 J","276 J","69 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 49 N moves a body 6 m in the direction of the force. Calculate the work done.","o":["588 J","147 J","55 J","294 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 47 N moves a body 28 m in the direction of the force. Calculate the work done.","o":["1316 J","75 J","2632 J","658 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 47 N moves a body 20 m in the direction of the force. Calculate the work done.","o":["1880 J","67 J","940 J","470 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 67 N moves a body 29 m in the direction of the force. Calculate the work done.","o":["96 J","1946 J","3886 J","1943 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 28 N moves a body 26 m in the direction of the force. Calculate the work done.","o":["728 J","54 J","1456 J","364 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 86 N moves a body 35 m in the direction of the force. Calculate the work done.","o":["1505 J","6020 J","121 J","3010 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 27 N moves a body 19 m in the direction of the force. Calculate the work done.","o":["1026 J","46 J","513 J","516 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 63 N moves a body 31 m in the direction of the force. Calculate the work done.","o":["1953 J","94 J","1956 J","3906 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 66 N moves a body 37 m in the direction of the force. Calculate the work done.","o":["103 J","4884 J","1221 J","2442 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 60 N moves a body 27 m in the direction of the force. Calculate the work done.","o":["87 J","1620 J","810 J","3240 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 38 N moves a body 30 m in the direction of the force. Calculate the work done.","o":["570 J","1140 J","2280 J","68 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 90 N moves a body 3 m in the direction of the force. Calculate the work done.","o":["135 J","540 J","270 J","93 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 32 N moves a body 6 m in the direction of the force. Calculate the work done.","o":["192 J","38 J","384 J","96 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 83 N moves a body 32 m in the direction of the force. Calculate the work done.","o":["5312 J","1328 J","2656 J","115 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 22 N moves a body 30 m in the direction of the force. Calculate the work done.","o":["1320 J","52 J","660 J","330 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 36 N moves a body 28 m in the direction of the force. Calculate the work done.","o":["2016 J","64 J","504 J","1008 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 70 N moves a body 31 m in the direction of the force. Calculate the work done.","o":["4340 J","101 J","2170 J","1085 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 63 N moves a body 21 m in the direction of the force. Calculate the work done.","o":["1323 J","84 J","2646 J","1326 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 17 N moves a body 9 m in the direction of the force. Calculate the work done.","o":["156 J","153 J","306 J","26 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 4 N moves a body 20 m in the direction of the force. Calculate the work done.","o":["160 J","40 J","24 J","80 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 78 N moves a body 3 m in the direction of the force. Calculate the work done.","o":["81 J","117 J","234 J","468 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 87 N moves a body 35 m in the direction of the force. Calculate the work done.","o":["3045 J","3048 J","6090 J","122 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 60 N moves a body 11 m in the direction of the force. Calculate the work done.","o":["71 J","1320 J","660 J","330 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 78 N moves a body 14 m in the direction of the force. Calculate the work done.","o":["92 J","546 J","1092 J","2184 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 45 N moves a body 40 m in the direction of the force. Calculate the work done.","o":["3600 J","900 J","1800 J","85 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 60 N moves a body 12 m in the direction of the force. Calculate the work done.","o":["360 J","720 J","1440 J","72 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 66 N moves a body 25 m in the direction of the force. Calculate the work done.","o":["825 J","3300 J","1650 J","91 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 88 N moves a body 12 m in the direction of the force. Calculate the work done.","o":["2112 J","1056 J","528 J","100 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 12 N moves a body 16 m in the direction of the force. Calculate the work done.","o":["192 J","384 J","96 J","28 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 4 N moves a body 10 m in the direction of the force. Calculate the work done.","o":["80 J","40 J","20 J","14 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 17 N moves a body 36 m in the direction of the force. Calculate the work done.","o":["612 J","53 J","1224 J","306 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 15 N moves a body 39 m in the direction of the force. Calculate the work done.","o":["1170 J","54 J","588 J","585 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 2 N moves a body 9 m in the direction of the force. Calculate the work done.","o":["18 J","11 J","36 J","9 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 27 N moves a body 18 m in the direction of the force. Calculate the work done.","o":["972 J","45 J","243 J","486 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 61 N moves a body 31 m in the direction of the force. Calculate the work done.","o":["92 J","1891 J","1894 J","3782 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 42 N moves a body 21 m in the direction of the force. Calculate the work done.","o":["882 J","63 J","1764 J","441 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 2 N moves a body 11 m in the direction of the force. Calculate the work done.","o":["22 J","11 J","44 J","13 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 46 N moves a body 7 m in the direction of the force. Calculate the work done.","o":["53 J","322 J","644 J","161 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 26 N moves a body 23 m in the direction of the force. Calculate the work done.","o":["299 J","1196 J","598 J","49 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 80 N moves a body 3 m in the direction of the force. Calculate the work done.","o":["240 J","83 J","480 J","120 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 14 N moves a body 37 m in the direction of the force. Calculate the work done.","o":["51 J","518 J","259 J","1036 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 90 N moves a body 11 m in the direction of the force. Calculate the work done.","o":["990 J","1980 J","101 J","495 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 61 N moves a body 30 m in the direction of the force. Calculate the work done.","o":["91 J","3660 J","915 J","1830 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 34 N moves a body 32 m in the direction of the force. Calculate the work done.","o":["2176 J","1088 J","66 J","544 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 14 N moves a body 39 m in the direction of the force. Calculate the work done.","o":["273 J","53 J","546 J","1092 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 87 N moves a body 6 m in the direction of the force. Calculate the work done.","o":["1044 J","93 J","522 J","261 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 68 N moves a body 20 m in the direction of the force. Calculate the work done.","o":["88 J","2720 J","1360 J","680 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 90 N moves a body 9 m in the direction of the force. Calculate the work done.","o":["99 J","405 J","810 J","1620 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 10 N moves a body 29 m in the direction of the force. Calculate the work done.","o":["145 J","39 J","580 J","290 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 82 N moves a body 4 m in the direction of the force. Calculate the work done.","o":["328 J","656 J","86 J","164 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 31 N moves a body 27 m in the direction of the force. Calculate the work done.","o":["58 J","840 J","1674 J","837 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 55 N moves a body 31 m in the direction of the force. Calculate the work done.","o":["1708 J","1705 J","86 J","3410 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 72 N moves a body 17 m in the direction of the force. Calculate the work done.","o":["1224 J","2448 J","89 J","612 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 33 N moves a body 24 m in the direction of the force. Calculate the work done.","o":["396 J","57 J","792 J","1584 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 24 N moves a body 38 m in the direction of the force. Calculate the work done.","o":["912 J","456 J","62 J","1824 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A force of 58 N moves a body 39 m in the direction of the force. Calculate the work done.","o":["2262 J","1131 J","97 J","4524 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine does 2200 J of work in 8 s. What is its power?","o":["17600 W","550 W","283 W","275 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 6000 J of work in 15 s. What is its power?","o":["90000 W","400 W","415 W","800 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2000 J of work in 16 s. What is its power?","o":["125 W","250 W","141 W","32000 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3300 J of work in 12 s. What is its power?","o":["550 W","39600 W","275 W","287 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5600 J of work in 8 s. What is its power?","o":["700 W","44800 W","1400 W","708 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5100 J of work in 17 s. What is its power?","o":["86700 W","317 W","600 W","300 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4300 J of work in 10 s. What is its power?","o":["43000 W","860 W","440 W","430 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1000 J of work in 8 s. What is its power?","o":["250 W","125 W","133 W","8000 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2700 J of work in 2 s. What is its power?","o":["5400 W","2700 W","1350 W","1352 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5000 J of work in 5 s. What is its power?","o":["1000 W","25000 W","1005 W","2000 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5200 J of work in 13 s. What is its power?","o":["800 W","67600 W","400 W","413 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2600 J of work in 2 s. What is its power?","o":["5200 W","1302 W","1300 W","2600 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 700 J of work in 10 s. What is its power?","o":["7000 W","70 W","80 W","140 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3200 J of work in 4 s. What is its power?","o":["1600 W","804 W","12800 W","800 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 900 J of work in 12 s. What is its power?","o":["150 W","75 W","10800 W","87 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4800 J of work in 2 s. What is its power?","o":["2402 W","4800 W","2400 W","9600 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1100 J of work in 4 s. What is its power?","o":["550 W","275 W","279 W","4400 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4400 J of work in 5 s. What is its power?","o":["885 W","1760 W","880 W","22000 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4200 J of work in 4 s. What is its power?","o":["2100 W","1050 W","16800 W","1054 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 600 J of work in 2 s. What is its power?","o":["1200 W","600 W","300 W","302 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3800 J of work in 10 s. What is its power?","o":["38000 W","760 W","390 W","380 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 500 J of work in 4 s. What is its power?","o":["2000 W","250 W","129 W","125 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5200 J of work in 8 s. What is its power?","o":["41600 W","650 W","1300 W","658 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3300 J of work in 3 s. What is its power?","o":["1100 W","1103 W","2200 W","9900 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 300 J of work in 4 s. What is its power?","o":["1200 W","150 W","75 W","79 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4500 J of work in 3 s. What is its power?","o":["1500 W","1503 W","13500 W","3000 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3300 J of work in 15 s. What is its power?","o":["220 W","49500 W","235 W","440 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4900 J of work in 10 s. What is its power?","o":["490 W","500 W","49000 W","980 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5600 J of work in 4 s. What is its power?","o":["2800 W","1400 W","1404 W","22400 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2100 J of work in 12 s. What is its power?","o":["175 W","350 W","187 W","25200 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 300 J of work in 2 s. What is its power?","o":["300 W","150 W","600 W","152 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2800 J of work in 14 s. What is its power?","o":["214 W","200 W","39200 W","400 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3200 J of work in 10 s. What is its power?","o":["640 W","320 W","330 W","32000 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3500 J of work in 5 s. What is its power?","o":["705 W","700 W","17500 W","1400 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3100 J of work in 10 s. What is its power?","o":["320 W","620 W","310 W","31000 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5700 J of work in 6 s. What is its power?","o":["1900 W","956 W","34200 W","950 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3900 J of work in 10 s. What is its power?","o":["390 W","780 W","400 W","39000 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1700 J of work in 17 s. What is its power?","o":["100 W","28900 W","200 W","117 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 200 J of work in 20 s. What is its power?","o":["10 W","30 W","20 W","4000 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2700 J of work in 12 s. What is its power?","o":["225 W","237 W","450 W","32400 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5400 J of work in 12 s. What is its power?","o":["900 W","64800 W","450 W","462 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2100 J of work in 15 s. What is its power?","o":["155 W","31500 W","280 W","140 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1400 J of work in 5 s. What is its power?","o":["560 W","285 W","7000 W","280 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4200 J of work in 8 s. What is its power?","o":["525 W","1050 W","33600 W","533 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3900 J of work in 12 s. What is its power?","o":["325 W","337 W","650 W","46800 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1900 J of work in 20 s. What is its power?","o":["95 W","38000 W","190 W","115 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 6000 J of work in 12 s. What is its power?","o":["1000 W","72000 W","500 W","512 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2200 J of work in 4 s. What is its power?","o":["1100 W","8800 W","554 W","550 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1600 J of work in 8 s. What is its power?","o":["208 W","400 W","12800 W","200 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1700 J of work in 20 s. What is its power?","o":["170 W","34000 W","85 W","105 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5500 J of work in 4 s. What is its power?","o":["22000 W","2750 W","1375 W","1379 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5400 J of work in 20 s. What is its power?","o":["108000 W","540 W","270 W","290 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2400 J of work in 8 s. What is its power?","o":["19200 W","600 W","300 W","308 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4400 J of work in 8 s. What is its power?","o":["35200 W","1100 W","558 W","550 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4000 J of work in 5 s. What is its power?","o":["805 W","1600 W","800 W","20000 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3300 J of work in 6 s. What is its power?","o":["19800 W","556 W","1100 W","550 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2800 J of work in 8 s. What is its power?","o":["350 W","700 W","358 W","22400 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3900 J of work in 4 s. What is its power?","o":["975 W","15600 W","1950 W","979 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5500 J of work in 2 s. What is its power?","o":["5500 W","11000 W","2752 W","2750 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5200 J of work in 16 s. What is its power?","o":["341 W","650 W","83200 W","325 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5900 J of work in 5 s. What is its power?","o":["2360 W","1180 W","1185 W","29500 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4600 J of work in 20 s. What is its power?","o":["230 W","92000 W","250 W","460 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 800 J of work in 8 s. What is its power?","o":["100 W","6400 W","200 W","108 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5700 J of work in 4 s. What is its power?","o":["22800 W","1425 W","2850 W","1429 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2300 J of work in 5 s. What is its power?","o":["460 W","920 W","11500 W","465 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1100 J of work in 20 s. What is its power?","o":["75 W","55 W","22000 W","110 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5400 J of work in 10 s. What is its power?","o":["540 W","54000 W","1080 W","550 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3700 J of work in 2 s. What is its power?","o":["1852 W","7400 W","1850 W","3700 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3900 J of work in 2 s. What is its power?","o":["3900 W","1952 W","7800 W","1950 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2400 J of work in 5 s. What is its power?","o":["12000 W","485 W","960 W","480 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2600 J of work in 4 s. What is its power?","o":["1300 W","654 W","650 W","10400 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5400 J of work in 15 s. What is its power?","o":["360 W","720 W","375 W","81000 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1600 J of work in 5 s. What is its power?","o":["325 W","320 W","640 W","8000 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1300 J of work in 13 s. What is its power?","o":["200 W","16900 W","100 W","113 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 6000 J of work in 20 s. What is its power?","o":["120000 W","600 W","300 W","320 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 6000 J of work in 3 s. What is its power?","o":["2000 W","2003 W","18000 W","4000 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5800 J of work in 20 s. What is its power?","o":["580 W","290 W","310 W","116000 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3200 J of work in 5 s. What is its power?","o":["1280 W","16000 W","645 W","640 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3300 J of work in 5 s. What is its power?","o":["665 W","660 W","16500 W","1320 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4700 J of work in 10 s. What is its power?","o":["940 W","470 W","480 W","47000 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 4800 J of work in 10 s. What is its power?","o":["48000 W","480 W","960 W","490 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5700 J of work in 3 s. What is its power?","o":["17100 W","3800 W","1903 W","1900 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 500 J of work in 5 s. What is its power?","o":["100 W","2500 W","105 W","200 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3000 J of work in 2 s. What is its power?","o":["6000 W","1502 W","3000 W","1500 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3500 J of work in 14 s. What is its power?","o":["250 W","500 W","49000 W","264 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3100 J of work in 5 s. What is its power?","o":["15500 W","620 W","1240 W","625 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5400 J of work in 2 s. What is its power?","o":["10800 W","2700 W","5400 W","2702 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 900 J of work in 18 s. What is its power?","o":["68 W","100 W","50 W","16200 W"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1800 J of work in 10 s. What is its power?","o":["18000 W","180 W","360 W","190 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1300 J of work in 2 s. What is its power?","o":["650 W","1300 W","2600 W","652 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1400 J of work in 4 s. What is its power?","o":["700 W","354 W","5600 W","350 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 3000 J of work in 10 s. What is its power?","o":["300 W","310 W","600 W","30000 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5700 J of work in 20 s. What is its power?","o":["305 W","570 W","114000 W","285 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 2200 J of work in 10 s. What is its power?","o":["230 W","220 W","22000 W","440 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1200 J of work in 10 s. What is its power?","o":["120 W","130 W","12000 W","240 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1600 J of work in 4 s. What is its power?","o":["400 W","6400 W","800 W","404 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1200 J of work in 16 s. What is its power?","o":["91 W","75 W","19200 W","150 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 5300 J of work in 10 s. What is its power?","o":["53000 W","1060 W","540 W","530 W"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 1500 J of work in 4 s. What is its power?","o":["375 W","750 W","379 W","6000 W"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"A machine does 600 J of work in 12 s. What is its power?","o":["62 W","50 W","100 W","7200 W"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 18 kg body moving at 15 m/s.","o":["270 J","4050 J","135 J","2025 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 6 kg body moving at 12 m/s.","o":["432 J","864 J","72 J","36 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 28 kg body moving at 3 m/s.","o":["126 J","252 J","84 J","42 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 26 kg body moving at 9 m/s.","o":["2106 J","1053 J","117 J","234 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 10 kg body moving at 5 m/s.","o":["25 J","250 J","125 J","50 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 32 kg body moving at 11 m/s.","o":["176 J","3872 J","1936 J","352 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 16 kg body moving at 4 m/s.","o":["32 J","64 J","128 J","256 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 16 kg body moving at 10 m/s.","o":["1600 J","160 J","800 J","80 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 24 kg body moving at 5 m/s.","o":["300 J","600 J","120 J","60 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 32 kg body moving at 15 m/s.","o":["240 J","7200 J","480 J","3600 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 6 kg body moving at 8 m/s.","o":["48 J","24 J","192 J","384 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 36 kg body moving at 6 m/s.","o":["108 J","648 J","216 J","1296 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 24 kg body moving at 12 m/s.","o":["3456 J","288 J","144 J","1728 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 20 kg body moving at 12 m/s.","o":["1440 J","120 J","240 J","2880 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 2 kg body moving at 5 m/s.","o":["50 J","5 J","10 J","25 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 12 kg body moving at 5 m/s.","o":["60 J","150 J","300 J","30 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 24 kg body moving at 15 m/s.","o":["180 J","2700 J","360 J","5400 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 28 kg body moving at 15 m/s.","o":["420 J","210 J","3150 J","6300 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 14 kg body moving at 14 m/s.","o":["98 J","1372 J","2744 J","196 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 10 kg body moving at 8 m/s.","o":["80 J","320 J","640 J","40 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 12 kg body moving at 12 m/s.","o":["72 J","1728 J","864 J","144 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 6 kg body moving at 6 m/s.","o":["108 J","216 J","18 J","36 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 20 kg body moving at 4 m/s.","o":["320 J","80 J","160 J","40 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 2 kg body moving at 12 m/s.","o":["144 J","12 J","24 J","288 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 22 kg body moving at 8 m/s.","o":["176 J","704 J","88 J","1408 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 34 kg body moving at 5 m/s.","o":["85 J","850 J","170 J","425 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 38 kg body moving at 8 m/s.","o":["1216 J","152 J","304 J","2432 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 28 kg body moving at 10 m/s.","o":["280 J","2800 J","140 J","1400 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 16 kg body moving at 5 m/s.","o":["40 J","80 J","200 J","400 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 40 kg body moving at 10 m/s.","o":["2000 J","4000 J","200 J","400 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 14 kg body moving at 10 m/s.","o":["140 J","700 J","70 J","1400 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 38 kg body moving at 7 m/s.","o":["133 J","1862 J","266 J","931 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 8 kg body moving at 5 m/s.","o":["100 J","40 J","20 J","200 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 22 kg body moving at 3 m/s.","o":["99 J","198 J","33 J","66 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 8 kg body moving at 9 m/s.","o":["72 J","324 J","36 J","648 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 10 kg body moving at 11 m/s.","o":["1210 J","55 J","110 J","605 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 34 kg body moving at 11 m/s.","o":["2057 J","187 J","4114 J","374 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 32 kg body moving at 5 m/s.","o":["400 J","160 J","800 J","80 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 4 kg body moving at 11 m/s.","o":["22 J","242 J","44 J","484 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 28 kg body moving at 14 m/s.","o":["5488 J","2744 J","392 J","196 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 2 kg body moving at 7 m/s.","o":["49 J","7 J","14 J","98 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 12 kg body moving at 7 m/s.","o":["42 J","84 J","294 J","588 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 20 kg body moving at 10 m/s.","o":["2000 J","1000 J","200 J","100 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 24 kg body moving at 7 m/s.","o":["588 J","1176 J","168 J","84 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 40 kg body moving at 5 m/s.","o":["500 J","1000 J","100 J","200 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 16 kg body moving at 11 m/s.","o":["1936 J","968 J","88 J","176 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 14 kg body moving at 6 m/s.","o":["252 J","84 J","504 J","42 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 24 kg body moving at 9 m/s.","o":["1944 J","216 J","108 J","972 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 32 kg body moving at 10 m/s.","o":["320 J","3200 J","1600 J","160 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 26 kg body moving at 11 m/s.","o":["286 J","3146 J","143 J","1573 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 36 kg body moving at 9 m/s.","o":["2916 J","162 J","1458 J","324 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 26 kg body moving at 8 m/s.","o":["104 J","1664 J","832 J","208 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 14 kg body moving at 4 m/s.","o":["56 J","224 J","112 J","28 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 30 kg body moving at 5 m/s.","o":["150 J","375 J","750 J","75 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 2 kg body moving at 8 m/s.","o":["16 J","8 J","128 J","64 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 18 kg body moving at 9 m/s.","o":["81 J","162 J","1458 J","729 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 2 kg body moving at 3 m/s.","o":["6 J","18 J","3 J","9 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 8 kg body moving at 13 m/s.","o":["1352 J","676 J","52 J","104 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 28 kg body moving at 12 m/s.","o":["4032 J","168 J","336 J","2016 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 38 kg body moving at 10 m/s.","o":["190 J","380 J","1900 J","3800 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 40 kg body moving at 15 m/s.","o":["4500 J","9000 J","600 J","300 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 24 kg body moving at 14 m/s.","o":["4704 J","336 J","2352 J","168 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 20 kg body moving at 8 m/s.","o":["640 J","1280 J","160 J","80 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 38 kg body moving at 14 m/s.","o":["7448 J","3724 J","266 J","532 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 4 kg body moving at 5 m/s.","o":["50 J","100 J","20 J","10 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 34 kg body moving at 14 m/s.","o":["6664 J","476 J","238 J","3332 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 14 kg body moving at 11 m/s.","o":["77 J","847 J","1694 J","154 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 36 kg body moving at 11 m/s.","o":["396 J","2178 J","198 J","4356 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 8 kg body moving at 4 m/s.","o":["16 J","32 J","128 J","64 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 40 kg body moving at 3 m/s.","o":["180 J","60 J","120 J","360 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 10 kg body moving at 9 m/s.","o":["90 J","405 J","45 J","810 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 6 kg body moving at 5 m/s.","o":["75 J","15 J","30 J","150 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 28 kg body moving at 5 m/s.","o":["700 J","70 J","350 J","140 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 26 kg body moving at 12 m/s.","o":["3744 J","312 J","1872 J","156 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 4 kg body moving at 10 m/s.","o":["20 J","40 J","200 J","400 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 22 kg body moving at 14 m/s.","o":["2156 J","4312 J","154 J","308 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 16 kg body moving at 3 m/s.","o":["48 J","24 J","144 J","72 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 4 kg body moving at 14 m/s.","o":["56 J","28 J","784 J","392 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 40 kg body moving at 4 m/s.","o":["80 J","640 J","320 J","160 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 40 kg body moving at 14 m/s.","o":["3920 J","7840 J","560 J","280 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 30 kg body moving at 10 m/s.","o":["150 J","300 J","1500 J","3000 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 24 kg body moving at 3 m/s.","o":["36 J","72 J","108 J","216 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 28 kg body moving at 9 m/s.","o":["2268 J","126 J","252 J","1134 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 36 kg body moving at 14 m/s.","o":["3528 J","7056 J","252 J","504 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 38 kg body moving at 6 m/s.","o":["114 J","1368 J","228 J","684 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 16 kg body moving at 9 m/s.","o":["144 J","72 J","648 J","1296 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 26 kg body moving at 5 m/s.","o":["130 J","650 J","65 J","325 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 20 kg body moving at 9 m/s.","o":["810 J","1620 J","180 J","90 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 32 kg body moving at 4 m/s.","o":["64 J","512 J","256 J","128 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 6 kg body moving at 3 m/s.","o":["18 J","27 J","9 J","54 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 20 kg body moving at 14 m/s.","o":["140 J","3920 J","1960 J","280 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 16 kg body moving at 12 m/s.","o":["192 J","96 J","1152 J","2304 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 30 kg body moving at 7 m/s.","o":["735 J","1470 J","105 J","210 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 28 kg body moving at 11 m/s.","o":["3388 J","308 J","1694 J","154 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 30 kg body moving at 3 m/s.","o":["270 J","135 J","90 J","45 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 26 kg body moving at 7 m/s.","o":["91 J","1274 J","637 J","182 J"],"a":2,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 6 kg body moving at 11 m/s.","o":["363 J","726 J","66 J","33 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 14 kg body moving at 9 m/s.","o":["1134 J","63 J","126 J","567 J"],"a":3,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 10 kg body moving at 6 m/s.","o":["180 J","30 J","360 J","60 J"],"a":0,"t":"Work, Energy and Power","d":"Medium"},{"q":"Calculate the kinetic energy of a 14 kg body moving at 12 m/s.","o":["2016 J","1008 J","84 J","168 J"],"a":1,"t":"Work, Energy and Power","d":"Medium"},{"q":"Find the potential energy of a 2 kg mass raised through 32 m. (g = 10 m/s²)","o":["576 J","6400 J","64 J","640 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 35 kg mass raised through 43 m. (g = 10 m/s²)","o":["13545 J","150500 J","1505 J","15050 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 29 kg mass raised through 39 m. (g = 10 m/s²)","o":["113100 J","1131 J","11310 J","10179 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 22 kg mass raised through 21 m. (g = 10 m/s²)","o":["46200 J","4620 J","462 J","4158 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 28 kg mass raised through 30 m. (g = 10 m/s²)","o":["8400 J","7560 J","840 J","84000 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 60 kg mass raised through 22 m. (g = 10 m/s²)","o":["11880 J","1320 J","13200 J","132000 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 45 kg mass raised through 47 m. (g = 10 m/s²)","o":["19035 J","21150 J","211500 J","2115 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 37 kg mass raised through 6 m. (g = 10 m/s²)","o":["2220 J","1998 J","22200 J","222 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 39 kg mass raised through 13 m. (g = 10 m/s²)","o":["4563 J","507 J","5070 J","50700 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 54 kg mass raised through 50 m. (g = 10 m/s²)","o":["2700 J","270000 J","24300 J","27000 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 20 kg mass raised through 24 m. (g = 10 m/s²)","o":["4800 J","480 J","48000 J","4320 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 24 kg mass raised through 20 m. (g = 10 m/s²)","o":["480 J","4800 J","4320 J","48000 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 39 kg mass raised through 14 m. (g = 10 m/s²)","o":["5460 J","4914 J","546 J","54600 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 52 kg mass raised through 6 m. (g = 10 m/s²)","o":["31200 J","312 J","3120 J","2808 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 40 kg mass raised through 27 m. (g = 10 m/s²)","o":["108000 J","9720 J","10800 J","1080 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 55 kg mass raised through 38 m. (g = 10 m/s²)","o":["20900 J","209000 J","18810 J","2090 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 20 kg mass raised through 46 m. (g = 10 m/s²)","o":["920 J","9200 J","8280 J","92000 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 34 kg mass raised through 33 m. (g = 10 m/s²)","o":["11220 J","10098 J","112200 J","1122 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 14 kg mass raised through 24 m. (g = 10 m/s²)","o":["336 J","3360 J","3024 J","33600 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 3 kg mass raised through 10 m. (g = 10 m/s²)","o":["30 J","270 J","3000 J","300 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 26 kg mass raised through 37 m. (g = 10 m/s²)","o":["9620 J","962 J","96200 J","8658 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 6 kg mass raised through 13 m. (g = 10 m/s²)","o":["7800 J","702 J","78 J","780 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 59 kg mass raised through 10 m. (g = 10 m/s²)","o":["590 J","5900 J","59000 J","5310 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 24 kg mass raised through 18 m. (g = 10 m/s²)","o":["3888 J","4320 J","43200 J","432 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 8 kg mass raised through 34 m. (g = 10 m/s²)","o":["272 J","2720 J","27200 J","2448 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 22 kg mass raised through 25 m. (g = 10 m/s²)","o":["550 J","4950 J","55000 J","5500 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 59 kg mass raised through 33 m. (g = 10 m/s²)","o":["1947 J","19470 J","194700 J","17523 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 19 kg mass raised through 2 m. (g = 10 m/s²)","o":["3800 J","380 J","342 J","38 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 20 kg mass raised through 43 m. (g = 10 m/s²)","o":["8600 J","7740 J","86000 J","860 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 60 kg mass raised through 44 m. (g = 10 m/s²)","o":["26400 J","23760 J","264000 J","2640 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 2 kg mass raised through 42 m. (g = 10 m/s²)","o":["756 J","840 J","84 J","8400 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 59 kg mass raised through 39 m. (g = 10 m/s²)","o":["20709 J","2301 J","23010 J","230100 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 21 kg mass raised through 32 m. (g = 10 m/s²)","o":["672 J","6048 J","6720 J","67200 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 51 kg mass raised through 49 m. (g = 10 m/s²)","o":["24990 J","249900 J","2499 J","22491 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 41 kg mass raised through 26 m. (g = 10 m/s²)","o":["10660 J","1066 J","9594 J","106600 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 28 kg mass raised through 4 m. (g = 10 m/s²)","o":["1008 J","112 J","1120 J","11200 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 2 kg mass raised through 16 m. (g = 10 m/s²)","o":["320 J","32 J","3200 J","288 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 28 kg mass raised through 42 m. (g = 10 m/s²)","o":["117600 J","10584 J","11760 J","1176 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 14 kg mass raised through 14 m. (g = 10 m/s²)","o":["196 J","1960 J","19600 J","1764 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 30 kg mass raised through 8 m. (g = 10 m/s²)","o":["2160 J","2400 J","240 J","24000 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 52 kg mass raised through 27 m. (g = 10 m/s²)","o":["14040 J","12636 J","1404 J","140400 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 8 kg mass raised through 11 m. (g = 10 m/s²)","o":["880 J","8800 J","88 J","792 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 43 kg mass raised through 2 m. (g = 10 m/s²)","o":["86 J","860 J","8600 J","774 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 37 kg mass raised through 16 m. (g = 10 m/s²)","o":["5328 J","5920 J","592 J","59200 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 44 kg mass raised through 37 m. (g = 10 m/s²)","o":["1628 J","16280 J","14652 J","162800 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 52 kg mass raised through 48 m. (g = 10 m/s²)","o":["24960 J","2496 J","249600 J","22464 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 6 kg mass raised through 5 m. (g = 10 m/s²)","o":["30 J","3000 J","300 J","270 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 33 kg mass raised through 14 m. (g = 10 m/s²)","o":["4158 J","462 J","46200 J","4620 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 40 kg mass raised through 7 m. (g = 10 m/s²)","o":["28000 J","280 J","2520 J","2800 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 42 kg mass raised through 45 m. (g = 10 m/s²)","o":["1890 J","189000 J","18900 J","17010 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 8 kg mass raised through 42 m. (g = 10 m/s²)","o":["3360 J","3024 J","33600 J","336 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 46 kg mass raised through 13 m. (g = 10 m/s²)","o":["5980 J","598 J","59800 J","5382 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 52 kg mass raised through 47 m. (g = 10 m/s²)","o":["244400 J","21996 J","24440 J","2444 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 23 kg mass raised through 33 m. (g = 10 m/s²)","o":["6831 J","759 J","75900 J","7590 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 57 kg mass raised through 2 m. (g = 10 m/s²)","o":["1026 J","114 J","1140 J","11400 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 8 kg mass raised through 19 m. (g = 10 m/s²)","o":["152 J","15200 J","1520 J","1368 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 40 kg mass raised through 31 m. (g = 10 m/s²)","o":["11160 J","1240 J","124000 J","12400 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 35 kg mass raised through 14 m. (g = 10 m/s²)","o":["49000 J","490 J","4410 J","4900 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 5 kg mass raised through 43 m. (g = 10 m/s²)","o":["1935 J","21500 J","2150 J","215 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 22 kg mass raised through 5 m. (g = 10 m/s²)","o":["110 J","990 J","1100 J","11000 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 4 kg mass raised through 33 m. (g = 10 m/s²)","o":["132 J","1188 J","1320 J","13200 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 10 kg mass raised through 50 m. (g = 10 m/s²)","o":["50000 J","4500 J","5000 J","500 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 3 kg mass raised through 41 m. (g = 10 m/s²)","o":["12300 J","1107 J","123 J","1230 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 53 kg mass raised through 23 m. (g = 10 m/s²)","o":["1219 J","121900 J","12190 J","10971 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 50 kg mass raised through 28 m. (g = 10 m/s²)","o":["14000 J","1400 J","140000 J","12600 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 22 kg mass raised through 7 m. (g = 10 m/s²)","o":["15400 J","1540 J","154 J","1386 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 1 kg mass raised through 32 m. (g = 10 m/s²)","o":["288 J","320 J","3200 J","32 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 13 kg mass raised through 48 m. (g = 10 m/s²)","o":["5616 J","6240 J","62400 J","624 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 25 kg mass raised through 5 m. (g = 10 m/s²)","o":["125 J","1250 J","12500 J","1125 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 11 kg mass raised through 16 m. (g = 10 m/s²)","o":["17600 J","176 J","1584 J","1760 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 55 kg mass raised through 44 m. (g = 10 m/s²)","o":["2420 J","24200 J","242000 J","21780 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 50 kg mass raised through 49 m. (g = 10 m/s²)","o":["2450 J","24500 J","245000 J","22050 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 53 kg mass raised through 4 m. (g = 10 m/s²)","o":["212 J","1908 J","21200 J","2120 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 12 kg mass raised through 30 m. (g = 10 m/s²)","o":["36000 J","3600 J","3240 J","360 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 21 kg mass raised through 27 m. (g = 10 m/s²)","o":["5103 J","56700 J","5670 J","567 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 27 kg mass raised through 37 m. (g = 10 m/s²)","o":["8991 J","999 J","9990 J","99900 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 38 kg mass raised through 42 m. (g = 10 m/s²)","o":["14364 J","15960 J","1596 J","159600 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 58 kg mass raised through 40 m. (g = 10 m/s²)","o":["2320 J","20880 J","232000 J","23200 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 5 kg mass raised through 24 m. (g = 10 m/s²)","o":["12000 J","1200 J","120 J","1080 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 16 kg mass raised through 19 m. (g = 10 m/s²)","o":["2736 J","30400 J","304 J","3040 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 26 kg mass raised through 9 m. (g = 10 m/s²)","o":["23400 J","2340 J","2106 J","234 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 1 kg mass raised through 2 m. (g = 10 m/s²)","o":["2 J","18 J","20 J","200 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 21 kg mass raised through 21 m. (g = 10 m/s²)","o":["441 J","44100 J","4410 J","3969 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 36 kg mass raised through 29 m. (g = 10 m/s²)","o":["10440 J","104400 J","9396 J","1044 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 30 kg mass raised through 32 m. (g = 10 m/s²)","o":["960 J","96000 J","8640 J","9600 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 38 kg mass raised through 36 m. (g = 10 m/s²)","o":["12312 J","136800 J","13680 J","1368 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 29 kg mass raised through 11 m. (g = 10 m/s²)","o":["319 J","2871 J","31900 J","3190 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 59 kg mass raised through 13 m. (g = 10 m/s²)","o":["76700 J","767 J","6903 J","7670 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 20 kg mass raised through 44 m. (g = 10 m/s²)","o":["7920 J","88000 J","8800 J","880 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 19 kg mass raised through 40 m. (g = 10 m/s²)","o":["6840 J","7600 J","76000 J","760 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 44 kg mass raised through 48 m. (g = 10 m/s²)","o":["2112 J","19008 J","21120 J","211200 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 53 kg mass raised through 16 m. (g = 10 m/s²)","o":["8480 J","7632 J","848 J","84800 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 37 kg mass raised through 45 m. (g = 10 m/s²)","o":["166500 J","1665 J","16650 J","14985 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 35 kg mass raised through 31 m. (g = 10 m/s²)","o":["9765 J","10850 J","108500 J","1085 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 5 kg mass raised through 25 m. (g = 10 m/s²)","o":["125 J","1250 J","1125 J","12500 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 3 kg mass raised through 20 m. (g = 10 m/s²)","o":["600 J","60 J","540 J","6000 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 27 kg mass raised through 16 m. (g = 10 m/s²)","o":["3888 J","4320 J","43200 J","432 J"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 35 kg mass raised through 11 m. (g = 10 m/s²)","o":["3850 J","3465 J","385 J","38500 J"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 3 kg mass raised through 40 m. (g = 10 m/s²)","o":["12000 J","120 J","1200 J","1080 J"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"Find the potential energy of a 14 kg mass raised through 48 m. (g = 10 m/s²)","o":["6048 J","67200 J","672 J","6720 J"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 39 Ω. Find the potential difference across it.","o":["780 V","49 V","1521 V","390 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 4 A flows through a resistor of 25 Ω. Find the potential difference across it.","o":["200 V","100 V","29 V","625 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 4 A flows through a resistor of 2 Ω. Find the potential difference across it.","o":["16 V","8 V","4 V","6 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 3 A flows through a resistor of 4 Ω. Find the potential difference across it.","o":["7 V","12 V","16 V","24 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 4 A flows through a resistor of 5 Ω. Find the potential difference across it.","o":["40 V","25 V","20 V","9 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 22 Ω. Find the potential difference across it.","o":["154 V","484 V","308 V","29 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 2 A flows through a resistor of 29 Ω. Find the potential difference across it.","o":["116 V","31 V","58 V","841 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 24 Ω. Find the potential difference across it.","o":["33 V","576 V","432 V","216 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 1 A flows through a resistor of 33 Ω. Find the potential difference across it.","o":["66 V","34 V","1089 V","33 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 35 Ω. Find the potential difference across it.","o":["700 V","1225 V","350 V","45 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 12 Ω. Find the potential difference across it.","o":["108 V","21 V","216 V","144 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 7 Ω. Find the potential difference across it.","o":["49 V","140 V","17 V","70 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 30 Ω. Find the potential difference across it.","o":["900 V","270 V","39 V","540 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 1 A flows through a resistor of 6 Ω. Find the potential difference across it.","o":["7 V","12 V","6 V","36 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 8 A flows through a resistor of 15 Ω. Find the potential difference across it.","o":["120 V","23 V","225 V","240 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 10 Ω. Find the potential difference across it.","o":["110 V","200 V","20 V","100 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 4 A flows through a resistor of 28 Ω. Find the potential difference across it.","o":["32 V","784 V","224 V","112 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 4 A flows through a resistor of 33 Ω. Find the potential difference across it.","o":["1089 V","132 V","37 V","264 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 2 A flows through a resistor of 5 Ω. Find the potential difference across it.","o":["25 V","7 V","20 V","10 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 26 Ω. Find the potential difference across it.","o":["520 V","676 V","260 V","36 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 5 Ω. Find the potential difference across it.","o":["12 V","70 V","25 V","35 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 2 A flows through a resistor of 27 Ω. Find the potential difference across it.","o":["29 V","729 V","54 V","108 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 6 A flows through a resistor of 19 Ω. Find the potential difference across it.","o":["228 V","361 V","25 V","114 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 3 Ω. Find the potential difference across it.","o":["9 V","13 V","30 V","60 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 40 Ω. Find the potential difference across it.","o":["800 V","50 V","400 V","1600 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 11 Ω. Find the potential difference across it.","o":["121 V","110 V","55 V","16 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 31 Ω. Find the potential difference across it.","o":["217 V","38 V","961 V","434 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 1 A flows through a resistor of 12 Ω. Find the potential difference across it.","o":["12 V","13 V","24 V","144 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 3 A flows through a resistor of 19 Ω. Find the potential difference across it.","o":["22 V","57 V","114 V","361 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 8 A flows through a resistor of 20 Ω. Find the potential difference across it.","o":["160 V","28 V","320 V","400 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 5 Ω. Find the potential difference across it.","o":["30 V","25 V","50 V","10 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 3 A flows through a resistor of 22 Ω. Find the potential difference across it.","o":["66 V","25 V","132 V","484 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 4 Ω. Find the potential difference across it.","o":["40 V","14 V","80 V","16 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 3 A flows through a resistor of 18 Ω. Find the potential difference across it.","o":["324 V","108 V","54 V","21 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 6 A flows through a resistor of 7 Ω. Find the potential difference across it.","o":["42 V","84 V","49 V","13 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 2 A flows through a resistor of 37 Ω. Find the potential difference across it.","o":["148 V","74 V","1369 V","39 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 8 A flows through a resistor of 9 Ω. Find the potential difference across it.","o":["72 V","144 V","17 V","81 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 6 A flows through a resistor of 21 Ω. Find the potential difference across it.","o":["27 V","441 V","126 V","252 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 8 Ω. Find the potential difference across it.","o":["144 V","17 V","72 V","64 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 22 Ω. Find the potential difference across it.","o":["220 V","32 V","440 V","484 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 35 Ω. Find the potential difference across it.","o":["490 V","245 V","42 V","1225 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 4 Ω. Find the potential difference across it.","o":["56 V","11 V","16 V","28 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 27 Ω. Find the potential difference across it.","o":["135 V","729 V","32 V","270 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 21 Ω. Find the potential difference across it.","o":["210 V","441 V","105 V","26 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 9 Ω. Find the potential difference across it.","o":["81 V","162 V","90 V","18 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 18 Ω. Find the potential difference across it.","o":["324 V","28 V","180 V","360 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 28 Ω. Find the potential difference across it.","o":["560 V","784 V","38 V","280 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 32 Ω. Find the potential difference across it.","o":["576 V","41 V","1024 V","288 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 8 A flows through a resistor of 19 Ω. Find the potential difference across it.","o":["152 V","361 V","304 V","27 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 6 A flows through a resistor of 25 Ω. Find the potential difference across it.","o":["625 V","300 V","150 V","31 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 22 Ω. Find the potential difference across it.","o":["198 V","396 V","484 V","31 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 38 Ω. Find the potential difference across it.","o":["266 V","1444 V","45 V","532 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 8 A flows through a resistor of 30 Ω. Find the potential difference across it.","o":["900 V","480 V","38 V","240 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 1 A flows through a resistor of 27 Ω. Find the potential difference across it.","o":["54 V","27 V","729 V","28 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 40 Ω. Find the potential difference across it.","o":["360 V","49 V","720 V","1600 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 15 Ω. Find the potential difference across it.","o":["22 V","210 V","105 V","225 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 32 Ω. Find the potential difference across it.","o":["37 V","1024 V","160 V","320 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 6 A flows through a resistor of 28 Ω. Find the potential difference across it.","o":["784 V","34 V","168 V","336 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 2 Ω. Find the potential difference across it.","o":["10 V","4 V","20 V","7 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 20 Ω. Find the potential difference across it.","o":["100 V","200 V","25 V","400 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 4 A flows through a resistor of 35 Ω. Find the potential difference across it.","o":["140 V","1225 V","39 V","280 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 17 Ω. Find the potential difference across it.","o":["238 V","119 V","24 V","289 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 8 A flows through a resistor of 33 Ω. Find the potential difference across it.","o":["1089 V","528 V","41 V","264 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 39 Ω. Find the potential difference across it.","o":["46 V","1521 V","546 V","273 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 2 A flows through a resistor of 30 Ω. Find the potential difference across it.","o":["32 V","60 V","120 V","900 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 15 Ω. Find the potential difference across it.","o":["150 V","225 V","300 V","25 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 8 A flows through a resistor of 11 Ω. Find the potential difference across it.","o":["19 V","88 V","176 V","121 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 31 Ω. Find the potential difference across it.","o":["310 V","961 V","620 V","41 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 31 Ω. Find the potential difference across it.","o":["961 V","310 V","155 V","36 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 4 A flows through a resistor of 3 Ω. Find the potential difference across it.","o":["7 V","12 V","24 V","9 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 10 A flows through a resistor of 24 Ω. Find the potential difference across it.","o":["34 V","240 V","576 V","480 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 18 Ω. Find the potential difference across it.","o":["27 V","162 V","171 V","324 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 4 A flows through a resistor of 8 Ω. Find the potential difference across it.","o":["12 V","64 V","32 V","36 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 8 A flows through a resistor of 28 Ω. Find the potential difference across it.","o":["784 V","36 V","224 V","448 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 2 A flows through a resistor of 13 Ω. Find the potential difference across it.","o":["26 V","169 V","15 V","52 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 26 Ω. Find the potential difference across it.","o":["35 V","676 V","234 V","468 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 29 Ω. Find the potential difference across it.","o":["38 V","841 V","522 V","261 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 6 A flows through a resistor of 34 Ω. Find the potential difference across it.","o":["40 V","204 V","408 V","1156 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 2 A flows through a resistor of 3 Ω. Find the potential difference across it.","o":["9 V","6 V","5 V","12 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 35 Ω. Find the potential difference across it.","o":["40 V","1225 V","175 V","350 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 8 A flows through a resistor of 6 Ω. Find the potential difference across it.","o":["96 V","14 V","36 V","48 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 6 A flows through a resistor of 22 Ω. Find the potential difference across it.","o":["28 V","132 V","484 V","264 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 9 Ω. Find the potential difference across it.","o":["45 V","81 V","14 V","90 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 2 A flows through a resistor of 20 Ω. Find the potential difference across it.","o":["80 V","22 V","400 V","40 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 1 A flows through a resistor of 38 Ω. Find the potential difference across it.","o":["76 V","39 V","1444 V","38 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 8 A flows through a resistor of 13 Ω. Find the potential difference across it.","o":["21 V","104 V","208 V","169 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 6 A flows through a resistor of 26 Ω. Find the potential difference across it.","o":["32 V","156 V","312 V","676 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 3 A flows through a resistor of 3 Ω. Find the potential difference across it.","o":["18 V","9 V","6 V","12 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 37 Ω. Find the potential difference across it.","o":["1369 V","185 V","42 V","370 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 32 Ω. Find the potential difference across it.","o":["39 V","224 V","1024 V","448 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 25 Ω. Find the potential difference across it.","o":["625 V","175 V","32 V","350 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 4 A flows through a resistor of 31 Ω. Find the potential difference across it.","o":["248 V","35 V","961 V","124 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"A current of 7 A flows through a resistor of 6 Ω. Find the potential difference across it.","o":["42 V","36 V","13 V","84 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 8 A flows through a resistor of 18 Ω. Find the potential difference across it.","o":["26 V","288 V","144 V","324 V"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"A current of 5 A flows through a resistor of 16 Ω. Find the potential difference across it.","o":["80 V","256 V","160 V","21 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 6 Ω. Find the potential difference across it.","o":["36 V","54 V","108 V","15 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 1 A flows through a resistor of 30 Ω. Find the potential difference across it.","o":["31 V","30 V","60 V","900 V"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"A current of 9 A flows through a resistor of 19 Ω. Find the potential difference across it.","o":["171 V","361 V","342 V","28 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 4 A flows through a resistor of 20 Ω. Find the potential difference across it.","o":["80 V","400 V","160 V","24 V"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"A current of 4 A flows through a resistor of 38 Ω. Find the potential difference across it.","o":["304 V","42 V","1444 V","152 V"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 3 Ω and 23 Ω are connected in series. Find the total resistance.","o":["69 Ω","2.65 Ω","26 Ω","20 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 10 Ω and 24 Ω are connected in series. Find the total resistance.","o":["34 Ω","7.06 Ω","240 Ω","14 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 19 Ω and 5 Ω are connected in series. Find the total resistance.","o":["3.96 Ω","14 Ω","95 Ω","24 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 28 Ω and 3 Ω are connected in series. Find the total resistance.","o":["84 Ω","31 Ω","2.71 Ω","25 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 24 Ω and 22 Ω are connected in series. Find the total resistance.","o":["46 Ω","11.48 Ω","2 Ω","528 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 7 Ω and 8 Ω are connected in series. Find the total resistance.","o":["3.73 Ω","1 Ω","15 Ω","56 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 2 Ω and 7 Ω are connected in series. Find the total resistance.","o":["5 Ω","14 Ω","9 Ω","1.56 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 5 Ω and 19 Ω are connected in series. Find the total resistance.","o":["3.96 Ω","95 Ω","24 Ω","14 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 21 Ω and 14 Ω are connected in series. Find the total resistance.","o":["35 Ω","8.4 Ω","7 Ω","294 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 11 Ω and 16 Ω are connected in series. Find the total resistance.","o":["176 Ω","6.52 Ω","5 Ω","27 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 18 Ω and 3 Ω are connected in series. Find the total resistance.","o":["15 Ω","54 Ω","21 Ω","2.57 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 24 Ω and 26 Ω are connected in series. Find the total resistance.","o":["12.48 Ω","50 Ω","624 Ω","2 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 19 Ω and 7 Ω are connected in series. Find the total resistance.","o":["12 Ω","5.12 Ω","133 Ω","26 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 30 Ω and 19 Ω are connected in series. Find the total resistance.","o":["570 Ω","11.63 Ω","11 Ω","49 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 3 Ω and 7 Ω are connected in series. Find the total resistance.","o":["4 Ω","21 Ω","10 Ω","2.1 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 24 Ω and 29 Ω are connected in series. Find the total resistance.","o":["53 Ω","696 Ω","5 Ω","13.13 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 17 Ω and 29 Ω are connected in series. Find the total resistance.","o":["493 Ω","46 Ω","12 Ω","10.72 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 8 Ω and 22 Ω are connected in series. Find the total resistance.","o":["5.87 Ω","176 Ω","30 Ω","14 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 28 Ω and 9 Ω are connected in series. Find the total resistance.","o":["37 Ω","6.81 Ω","19 Ω","252 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 27 Ω and 13 Ω are connected in series. Find the total resistance.","o":["8.78 Ω","40 Ω","351 Ω","14 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 3 Ω and 28 Ω are connected in series. Find the total resistance.","o":["31 Ω","2.71 Ω","84 Ω","25 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 15 Ω and 18 Ω are connected in series. Find the total resistance.","o":["33 Ω","270 Ω","3 Ω","8.18 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 3 Ω and 29 Ω are connected in series. Find the total resistance.","o":["32 Ω","26 Ω","87 Ω","2.72 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 2 Ω and 18 Ω are connected in series. Find the total resistance.","o":["16 Ω","20 Ω","36 Ω","1.8 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 28 Ω and 13 Ω are connected in series. Find the total resistance.","o":["8.88 Ω","15 Ω","364 Ω","41 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 10 Ω and 11 Ω are connected in series. Find the total resistance.","o":["110 Ω","21 Ω","5.24 Ω","1 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 8 Ω and 20 Ω are connected in series. Find the total resistance.","o":["12 Ω","5.71 Ω","28 Ω","160 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 30 Ω and 17 Ω are connected in series. Find the total resistance.","o":["47 Ω","10.85 Ω","13 Ω","510 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 5 Ω and 29 Ω are connected in series. Find the total resistance.","o":["24 Ω","145 Ω","34 Ω","4.26 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 10 Ω and 21 Ω are connected in series. Find the total resistance.","o":["6.77 Ω","210 Ω","31 Ω","11 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 2 Ω and 20 Ω are connected in series. Find the total resistance.","o":["40 Ω","1.82 Ω","18 Ω","22 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 28 Ω and 18 Ω are connected in series. Find the total resistance.","o":["46 Ω","10.96 Ω","10 Ω","504 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 30 Ω and 2 Ω are connected in series. Find the total resistance.","o":["1.88 Ω","28 Ω","60 Ω","32 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 11 Ω and 27 Ω are connected in series. Find the total resistance.","o":["7.82 Ω","16 Ω","297 Ω","38 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 6 Ω and 19 Ω are connected in series. Find the total resistance.","o":["4.56 Ω","13 Ω","25 Ω","114 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 19 Ω and 8 Ω are connected in series. Find the total resistance.","o":["5.63 Ω","11 Ω","27 Ω","152 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 27 Ω and 20 Ω are connected in series. Find the total resistance.","o":["7 Ω","540 Ω","11.49 Ω","47 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 22 Ω and 23 Ω are connected in series. Find the total resistance.","o":["11.24 Ω","506 Ω","45 Ω","1 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 16 Ω and 6 Ω are connected in series. Find the total resistance.","o":["22 Ω","4.36 Ω","96 Ω","10 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 27 Ω and 16 Ω are connected in series. Find the total resistance.","o":["43 Ω","10.05 Ω","432 Ω","11 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 16 Ω and 5 Ω are connected in series. Find the total resistance.","o":["11 Ω","80 Ω","3.81 Ω","21 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 29 Ω and 28 Ω are connected in series. Find the total resistance.","o":["1 Ω","57 Ω","812 Ω","14.25 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 19 Ω and 29 Ω are connected in series. Find the total resistance.","o":["551 Ω","11.48 Ω","48 Ω","10 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 6 Ω and 26 Ω are connected in series. Find the total resistance.","o":["4.88 Ω","156 Ω","32 Ω","20 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 9 Ω and 18 Ω are connected in series. Find the total resistance.","o":["9 Ω","162 Ω","27 Ω","6 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 13 Ω and 21 Ω are connected in series. Find the total resistance.","o":["8.03 Ω","273 Ω","34 Ω","8 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 26 Ω and 14 Ω are connected in series. Find the total resistance.","o":["364 Ω","9.1 Ω","40 Ω","12 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 8 Ω and 16 Ω are connected in series. Find the total resistance.","o":["8 Ω","128 Ω","24 Ω","5.33 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 11 Ω and 20 Ω are connected in series. Find the total resistance.","o":["31 Ω","7.1 Ω","9 Ω","220 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 13 Ω and 15 Ω are connected in series. Find the total resistance.","o":["2 Ω","28 Ω","195 Ω","6.96 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 30 Ω and 11 Ω are connected in series. Find the total resistance.","o":["330 Ω","41 Ω","19 Ω","8.05 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 15 Ω and 27 Ω are connected in series. Find the total resistance.","o":["405 Ω","12 Ω","42 Ω","9.64 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 21 Ω and 3 Ω are connected in series. Find the total resistance.","o":["18 Ω","2.62 Ω","63 Ω","24 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 28 Ω and 15 Ω are connected in series. Find the total resistance.","o":["13 Ω","420 Ω","9.77 Ω","43 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 20 Ω and 17 Ω are connected in series. Find the total resistance.","o":["9.19 Ω","340 Ω","3 Ω","37 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 7 Ω and 23 Ω are connected in series. Find the total resistance.","o":["16 Ω","5.37 Ω","30 Ω","161 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 28 Ω and 23 Ω are connected in series. Find the total resistance.","o":["5 Ω","644 Ω","51 Ω","12.63 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 24 Ω and 11 Ω are connected in series. Find the total resistance.","o":["13 Ω","7.54 Ω","264 Ω","35 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 5 Ω and 2 Ω are connected in series. Find the total resistance.","o":["3 Ω","1.43 Ω","7 Ω","10 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 19 Ω and 13 Ω are connected in series. Find the total resistance.","o":["247 Ω","7.72 Ω","32 Ω","6 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 12 Ω and 13 Ω are connected in series. Find the total resistance.","o":["1 Ω","25 Ω","6.24 Ω","156 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 13 Ω and 25 Ω are connected in series. Find the total resistance.","o":["12 Ω","8.55 Ω","38 Ω","325 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 14 Ω and 9 Ω are connected in series. Find the total resistance.","o":["126 Ω","5 Ω","23 Ω","5.48 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 28 Ω and 8 Ω are connected in series. Find the total resistance.","o":["6.22 Ω","224 Ω","36 Ω","20 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 9 Ω and 25 Ω are connected in series. Find the total resistance.","o":["225 Ω","6.62 Ω","34 Ω","16 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 22 Ω and 25 Ω are connected in series. Find the total resistance.","o":["11.7 Ω","3 Ω","550 Ω","47 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 13 Ω and 6 Ω are connected in series. Find the total resistance.","o":["4.11 Ω","7 Ω","78 Ω","19 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 15 Ω and 6 Ω are connected in series. Find the total resistance.","o":["90 Ω","4.29 Ω","21 Ω","9 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 7 Ω and 5 Ω are connected in series. Find the total resistance.","o":["35 Ω","2.92 Ω","12 Ω","2 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 23 Ω and 15 Ω are connected in series. Find the total resistance.","o":["345 Ω","8 Ω","38 Ω","9.08 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 14 Ω and 24 Ω are connected in series. Find the total resistance.","o":["336 Ω","10 Ω","8.84 Ω","38 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 29 Ω and 21 Ω are connected in series. Find the total resistance.","o":["12.18 Ω","8 Ω","50 Ω","609 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 22 Ω and 21 Ω are connected in series. Find the total resistance.","o":["1 Ω","43 Ω","10.74 Ω","462 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 27 Ω and 7 Ω are connected in series. Find the total resistance.","o":["5.56 Ω","34 Ω","189 Ω","20 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 26 Ω and 11 Ω are connected in series. Find the total resistance.","o":["286 Ω","37 Ω","7.73 Ω","15 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 16 Ω and 17 Ω are connected in series. Find the total resistance.","o":["33 Ω","8.24 Ω","272 Ω","1 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 18 Ω and 22 Ω are connected in series. Find the total resistance.","o":["40 Ω","9.9 Ω","4 Ω","396 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 18 Ω and 11 Ω are connected in series. Find the total resistance.","o":["29 Ω","198 Ω","6.83 Ω","7 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 21 Ω and 28 Ω are connected in series. Find the total resistance.","o":["588 Ω","49 Ω","7 Ω","12 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 16 Ω and 4 Ω are connected in series. Find the total resistance.","o":["12 Ω","20 Ω","3.2 Ω","64 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 2 Ω and 30 Ω are connected in series. Find the total resistance.","o":["1.88 Ω","28 Ω","32 Ω","60 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 13 Ω and 2 Ω are connected in series. Find the total resistance.","o":["1.73 Ω","11 Ω","15 Ω","26 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 10 Ω and 18 Ω are connected in series. Find the total resistance.","o":["6.43 Ω","8 Ω","28 Ω","180 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 12 Ω and 17 Ω are connected in series. Find the total resistance.","o":["204 Ω","7.03 Ω","29 Ω","5 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 19 Ω and 10 Ω are connected in series. Find the total resistance.","o":["9 Ω","6.55 Ω","29 Ω","190 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 17 Ω and 22 Ω are connected in series. Find the total resistance.","o":["374 Ω","5 Ω","9.59 Ω","39 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 9 Ω and 12 Ω are connected in series. Find the total resistance.","o":["21 Ω","5.14 Ω","108 Ω","3 Ω"],"a":0,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 16 Ω and 29 Ω are connected in series. Find the total resistance.","o":["10.31 Ω","13 Ω","464 Ω","45 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 8 Ω and 8 Ω are connected in series. Find the total resistance.","o":["0 Ω","64 Ω","4 Ω","16 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 12 Ω and 16 Ω are connected in series. Find the total resistance.","o":["6.86 Ω","28 Ω","192 Ω","4 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 13 Ω and 16 Ω are connected in series. Find the total resistance.","o":["208 Ω","29 Ω","3 Ω","7.17 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 5 Ω and 3 Ω are connected in series. Find the total resistance.","o":["15 Ω","2 Ω","1.88 Ω","8 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 8 Ω and 30 Ω are connected in series. Find the total resistance.","o":["240 Ω","6.32 Ω","38 Ω","22 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 24 Ω and 5 Ω are connected in series. Find the total resistance.","o":["120 Ω","29 Ω","4.14 Ω","19 Ω"],"a":1,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 17 Ω and 8 Ω are connected in series. Find the total resistance.","o":["9 Ω","136 Ω","25 Ω","5.44 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 4 Ω and 13 Ω are connected in series. Find the total resistance.","o":["3.06 Ω","9 Ω","52 Ω","17 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 26 Ω and 3 Ω are connected in series. Find the total resistance.","o":["23 Ω","78 Ω","29 Ω","2.69 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 18 Ω and 5 Ω are connected in series. Find the total resistance.","o":["13 Ω","3.91 Ω","23 Ω","90 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 10 Ω and 29 Ω are connected in series. Find the total resistance.","o":["7.44 Ω","290 Ω","39 Ω","19 Ω"],"a":2,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 25 Ω and 25 Ω are connected in series. Find the total resistance.","o":["12.5 Ω","625 Ω","0 Ω","50 Ω"],"a":3,"t":"Current Electricity","d":"Easy"},{"q":"Two resistors of 6 Ω and 30 Ω are connected in parallel. Find their effective resistance.","o":["5 Ω","36 Ω","180 Ω","6 Ω"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"Two resistors of 4 Ω and 12 Ω are connected in parallel. Find their effective resistance.","o":["48 Ω","3 Ω","4 Ω","16 Ω"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"Two resistors of 12 Ω and 6 Ω are connected in parallel. Find their effective resistance.","o":["5 Ω","4 Ω","72 Ω","18 Ω"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"Two resistors of 6 Ω and 12 Ω are connected in parallel. Find their effective resistance.","o":["5 Ω","72 Ω","18 Ω","4 Ω"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"Two resistors of 12 Ω and 4 Ω are connected in parallel. Find their effective resistance.","o":["16 Ω","3 Ω","4 Ω","48 Ω"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"Two resistors of 3 Ω and 6 Ω are connected in parallel. Find their effective resistance.","o":["18 Ω","3 Ω","2 Ω","9 Ω"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"Two resistors of 10 Ω and 15 Ω are connected in parallel. Find their effective resistance.","o":["150 Ω","7 Ω","25 Ω","6 Ω"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"Two resistors of 6 Ω and 3 Ω are connected in parallel. Find their effective resistance.","o":["3 Ω","18 Ω","9 Ω","2 Ω"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1300 W heater is used for 7 hours. How many kilowatt-hours of energy does it consume?","o":["9.1 kWh","9100 kWh","8.3 kWh","91 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1400 W heater is used for 6 hours. How many kilowatt-hours of energy does it consume?","o":["8400 kWh","7.4 kWh","8.4 kWh","84 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 500 W heater is used for 4 hours. How many kilowatt-hours of energy does it consume?","o":["2000 kWh","4.5 kWh","20 kWh","2 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 200 W heater is used for 7 hours. How many kilowatt-hours of energy does it consume?","o":["1400 kWh","1.4 kWh","7.2 kWh","14 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 400 W heater is used for 8 hours. How many kilowatt-hours of energy does it consume?","o":["8.4 kWh","3.2 kWh","32 kWh","3200 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1800 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["5.4 kWh","5400 kWh","54 kWh","4.8 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1800 W heater is used for 10 hours. How many kilowatt-hours of energy does it consume?","o":["180 kWh","18 kWh","11.8 kWh","18000 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 700 W heater is used for 9 hours. How many kilowatt-hours of energy does it consume?","o":["9.7 kWh","63 kWh","6300 kWh","6.3 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 700 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["7 kWh","700 kWh","1.7 kWh","0.7 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 200 W heater is used for 4 hours. How many kilowatt-hours of energy does it consume?","o":["4.2 kWh","800 kWh","0.8 kWh","8 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1800 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["9 kWh","6.8 kWh","90 kWh","9000 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 200 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["6 kWh","600 kWh","0.6 kWh","3.2 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1000 W heater is used for 8 hours. How many kilowatt-hours of energy does it consume?","o":["80 kWh","8 kWh","9 kWh","8000 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1100 W heater is used for 6 hours. How many kilowatt-hours of energy does it consume?","o":["66 kWh","6.6 kWh","7.1 kWh","6600 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 100 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["300 kWh","0.3 kWh","3.1 kWh","3 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 400 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["12 kWh","1200 kWh","3.4 kWh","1.2 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1500 W heater is used for 7 hours. How many kilowatt-hours of energy does it consume?","o":["105 kWh","10.5 kWh","8.5 kWh","10500 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1400 W heater is used for 2 hours. How many kilowatt-hours of energy does it consume?","o":["2800 kWh","28 kWh","2.8 kWh","3.4 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1700 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["5100 kWh","51 kWh","4.7 kWh","5.1 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1700 W heater is used for 2 hours. How many kilowatt-hours of energy does it consume?","o":["3.4 kWh","3400 kWh","34 kWh","3.7 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1900 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["4.9 kWh","5700 kWh","57 kWh","5.7 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1500 W heater is used for 8 hours. How many kilowatt-hours of energy does it consume?","o":["12000 kWh","9.5 kWh","12 kWh","120 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1900 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["1900 kWh","2.9 kWh","1.9 kWh","19 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1200 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["1200 kWh","12 kWh","1.2 kWh","2.2 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 600 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["18 kWh","1.8 kWh","3.6 kWh","1800 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 900 W heater is used for 7 hours. How many kilowatt-hours of energy does it consume?","o":["7.9 kWh","6300 kWh","6.3 kWh","63 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 800 W heater is used for 10 hours. How many kilowatt-hours of energy does it consume?","o":["10.8 kWh","80 kWh","8 kWh","8000 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 900 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["9 kWh","900 kWh","0.9 kWh","1.9 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 500 W heater is used for 6 hours. How many kilowatt-hours of energy does it consume?","o":["6.5 kWh","3000 kWh","30 kWh","3 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1900 W heater is used for 10 hours. How many kilowatt-hours of energy does it consume?","o":["19000 kWh","19 kWh","11.9 kWh","190 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1000 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["30 kWh","3000 kWh","4 kWh","3 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 600 W heater is used for 4 hours. How many kilowatt-hours of energy does it consume?","o":["24 kWh","2.4 kWh","4.6 kWh","2400 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1100 W heater is used for 2 hours. How many kilowatt-hours of energy does it consume?","o":["22 kWh","2.2 kWh","2200 kWh","3.1 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1100 W heater is used for 4 hours. How many kilowatt-hours of energy does it consume?","o":["4400 kWh","4.4 kWh","5.1 kWh","44 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1600 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["4.6 kWh","48 kWh","4.8 kWh","4800 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 2000 W heater is used for 4 hours. How many kilowatt-hours of energy does it consume?","o":["80 kWh","8000 kWh","8 kWh","6 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1000 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["50 kWh","5 kWh","5000 kWh","6 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 800 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["40 kWh","4000 kWh","4 kWh","5.8 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1500 W heater is used for 6 hours. How many kilowatt-hours of energy does it consume?","o":["90 kWh","7.5 kWh","9 kWh","9000 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 2000 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["6 kWh","5 kWh","60 kWh","6000 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 100 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["1 kWh","100 kWh","0.1 kWh","1.1 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1800 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["18 kWh","1.8 kWh","2.8 kWh","1800 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1900 W heater is used for 8 hours. How many kilowatt-hours of energy does it consume?","o":["152 kWh","9.9 kWh","15.2 kWh","15200 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1800 W heater is used for 8 hours. How many kilowatt-hours of energy does it consume?","o":["14400 kWh","144 kWh","14.4 kWh","9.8 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1100 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["6.1 kWh","55 kWh","5500 kWh","5.5 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 2000 W heater is used for 10 hours. How many kilowatt-hours of energy does it consume?","o":["200 kWh","20 kWh","12 kWh","20000 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 900 W heater is used for 10 hours. How many kilowatt-hours of energy does it consume?","o":["10.9 kWh","90 kWh","9 kWh","9000 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1300 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["1300 kWh","13 kWh","1.3 kWh","2.3 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1200 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["3.6 kWh","4.2 kWh","36 kWh","3600 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1200 W heater is used for 6 hours. How many kilowatt-hours of energy does it consume?","o":["7200 kWh","7.2 kWh","72 kWh","0.72 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1000 W heater is used for 10 hours. How many kilowatt-hours of energy does it consume?","o":["11 kWh","10 kWh","100 kWh","10000 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 500 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["0.5 kWh","500 kWh","5 kWh","1.5 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 400 W heater is used for 2 hours. How many kilowatt-hours of energy does it consume?","o":["2.4 kWh","8 kWh","800 kWh","0.8 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 500 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["3.5 kWh","15 kWh","1500 kWh","1.5 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1300 W heater is used for 8 hours. How many kilowatt-hours of energy does it consume?","o":["10.4 kWh","104 kWh","9.3 kWh","10400 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1500 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["6.5 kWh","75 kWh","7500 kWh","7.5 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1500 W heater is used for 10 hours. How many kilowatt-hours of energy does it consume?","o":["15 kWh","11.5 kWh","150 kWh","15000 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1900 W heater is used for 4 hours. How many kilowatt-hours of energy does it consume?","o":["7600 kWh","7.6 kWh","5.9 kWh","76 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 300 W heater is used for 10 hours. How many kilowatt-hours of energy does it consume?","o":["10.3 kWh","30 kWh","3 kWh","3000 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 800 W heater is used for 6 hours. How many kilowatt-hours of energy does it consume?","o":["6.8 kWh","4.8 kWh","4800 kWh","48 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1200 W heater is used for 10 hours. How many kilowatt-hours of energy does it consume?","o":["120 kWh","11.2 kWh","12 kWh","12000 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1100 W heater is used for 9 hours. How many kilowatt-hours of energy does it consume?","o":["9.9 kWh","10.1 kWh","9900 kWh","99 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 100 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["5 kWh","5.1 kWh","500 kWh","0.5 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1300 W heater is used for 9 hours. How many kilowatt-hours of energy does it consume?","o":["11700 kWh","117 kWh","11.7 kWh","10.3 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1400 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["70 kWh","7000 kWh","6.4 kWh","7 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 200 W heater is used for 10 hours. How many kilowatt-hours of energy does it consume?","o":["10.2 kWh","2000 kWh","20 kWh","2 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1700 W heater is used for 7 hours. How many kilowatt-hours of energy does it consume?","o":["8.7 kWh","119 kWh","11.9 kWh","11900 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 300 W heater is used for 7 hours. How many kilowatt-hours of energy does it consume?","o":["2100 kWh","7.3 kWh","21 kWh","2.1 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 500 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["25 kWh","2500 kWh","5.5 kWh","2.5 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1100 W heater is used for 7 hours. How many kilowatt-hours of energy does it consume?","o":["7700 kWh","7.7 kWh","8.1 kWh","77 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 400 W heater is used for 6 hours. How many kilowatt-hours of energy does it consume?","o":["2.4 kWh","2400 kWh","6.4 kWh","24 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1900 W heater is used for 2 hours. How many kilowatt-hours of energy does it consume?","o":["3.8 kWh","3.9 kWh","38 kWh","3800 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1700 W heater is used for 4 hours. How many kilowatt-hours of energy does it consume?","o":["68 kWh","6.8 kWh","6800 kWh","5.7 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 400 W heater is used for 9 hours. How many kilowatt-hours of energy does it consume?","o":["36 kWh","3600 kWh","9.4 kWh","3.6 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1400 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["1400 kWh","2.4 kWh","1.4 kWh","14 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 700 W heater is used for 8 hours. How many kilowatt-hours of energy does it consume?","o":["5.6 kWh","8.7 kWh","56 kWh","5600 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1600 W heater is used for 8 hours. How many kilowatt-hours of energy does it consume?","o":["9.6 kWh","12.8 kWh","128 kWh","12800 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1500 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["1.5 kWh","15 kWh","2.5 kWh","1500 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 300 W heater is used for 6 hours. How many kilowatt-hours of energy does it consume?","o":["1.8 kWh","18 kWh","6.3 kWh","1800 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1300 W heater is used for 6 hours. How many kilowatt-hours of energy does it consume?","o":["78 kWh","7.8 kWh","7800 kWh","7.3 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 200 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["1 kWh","1000 kWh","10 kWh","5.2 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1900 W heater is used for 7 hours. How many kilowatt-hours of energy does it consume?","o":["8.9 kWh","13300 kWh","13.3 kWh","133 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1100 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["3.3 kWh","33 kWh","3300 kWh","4.1 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 500 W heater is used for 9 hours. How many kilowatt-hours of energy does it consume?","o":["4500 kWh","45 kWh","4.5 kWh","9.5 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1600 W heater is used for 9 hours. How many kilowatt-hours of energy does it consume?","o":["14.4 kWh","144 kWh","14400 kWh","10.6 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1700 W heater is used for 8 hours. How many kilowatt-hours of energy does it consume?","o":["136 kWh","9.7 kWh","13600 kWh","13.6 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 1700 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["8500 kWh","8.5 kWh","85 kWh","6.7 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1000 W heater is used for 9 hours. How many kilowatt-hours of energy does it consume?","o":["9 kWh","9000 kWh","90 kWh","10 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1900 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["95 kWh","9.5 kWh","6.9 kWh","9500 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1800 W heater is used for 7 hours. How many kilowatt-hours of energy does it consume?","o":["12600 kWh","8.8 kWh","126 kWh","12.6 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 2000 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["3 kWh","2000 kWh","2 kWh","20 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1200 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["6 kWh","6.2 kWh","60 kWh","6000 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1600 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["16 kWh","1.6 kWh","1600 kWh","2.6 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 1300 W heater is used for 3 hours. How many kilowatt-hours of energy does it consume?","o":["39 kWh","3900 kWh","4.3 kWh","3.9 kWh"],"a":3,"t":"Current Electricity","d":"Medium"},{"q":"A 500 W heater is used for 10 hours. How many kilowatt-hours of energy does it consume?","o":["50 kWh","5000 kWh","5 kWh","10.5 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1000 W heater is used for 1 hours. How many kilowatt-hours of energy does it consume?","o":["1000 kWh","2 kWh","1 kWh","10 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 1700 W heater is used for 6 hours. How many kilowatt-hours of energy does it consume?","o":["102 kWh","10200 kWh","10.2 kWh","7.7 kWh"],"a":2,"t":"Current Electricity","d":"Medium"},{"q":"A 600 W heater is used for 5 hours. How many kilowatt-hours of energy does it consume?","o":["5.6 kWh","3 kWh","30 kWh","3000 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A 600 W heater is used for 6 hours. How many kilowatt-hours of energy does it consume?","o":["3.6 kWh","36 kWh","6.6 kWh","3600 kWh"],"a":0,"t":"Current Electricity","d":"Medium"},{"q":"A 1200 W heater is used for 9 hours. How many kilowatt-hours of energy does it consume?","o":["10800 kWh","10.8 kWh","108 kWh","10.2 kWh"],"a":1,"t":"Current Electricity","d":"Medium"},{"q":"A body has mass 560 g and volume 7 cm³. Find its density.","o":["80 g/cm³","81 g/cm³","160 g/cm³","3920 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 600 g and volume 20 cm³. Find its density.","o":["30 g/cm³","60 g/cm³","12000 g/cm³","31 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 240 g and volume 3 cm³. Find its density.","o":["160 g/cm³","81 g/cm³","80 g/cm³","720 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 240 g and volume 20 cm³. Find its density.","o":["12 g/cm³","24 g/cm³","4800 g/cm³","13 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 60 g and volume 5 cm³. Find its density.","o":["13 g/cm³","300 g/cm³","24 g/cm³","12 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 580 g and volume 10 cm³. Find its density.","o":["5800 g/cm³","58 g/cm³","116 g/cm³","59 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 80 g and volume 2 cm³. Find its density.","o":["160 g/cm³","40 g/cm³","80 g/cm³","41 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 600 g and volume 15 cm³. Find its density.","o":["80 g/cm³","9000 g/cm³","41 g/cm³","40 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 320 g and volume 16 cm³. Find its density.","o":["21 g/cm³","20 g/cm³","5120 g/cm³","40 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 360 g and volume 2 cm³. Find its density.","o":["181 g/cm³","720 g/cm³","180 g/cm³","360 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 360 g and volume 10 cm³. Find its density.","o":["37 g/cm³","36 g/cm³","72 g/cm³","3600 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 530 g and volume 2 cm³. Find its density.","o":["265 g/cm³","266 g/cm³","1060 g/cm³","530 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 550 g and volume 25 cm³. Find its density.","o":["23 g/cm³","44 g/cm³","13750 g/cm³","22 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 350 g and volume 10 cm³. Find its density.","o":["3500 g/cm³","36 g/cm³","35 g/cm³","70 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 270 g and volume 15 cm³. Find its density.","o":["18 g/cm³","4050 g/cm³","36 g/cm³","19 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 350 g and volume 5 cm³. Find its density.","o":["71 g/cm³","1750 g/cm³","140 g/cm³","70 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 370 g and volume 5 cm³. Find its density.","o":["75 g/cm³","148 g/cm³","1850 g/cm³","74 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 300 g and volume 3 cm³. Find its density.","o":["100 g/cm³","900 g/cm³","200 g/cm³","101 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 330 g and volume 2 cm³. Find its density.","o":["165 g/cm³","166 g/cm³","660 g/cm³","330 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 30 g and volume 2 cm³. Find its density.","o":["15 g/cm³","30 g/cm³","16 g/cm³","60 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 480 g and volume 5 cm³. Find its density.","o":["96 g/cm³","97 g/cm³","2400 g/cm³","192 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 180 g and volume 15 cm³. Find its density.","o":["2700 g/cm³","12 g/cm³","13 g/cm³","24 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 60 g and volume 10 cm³. Find its density.","o":["6 g/cm³","600 g/cm³","12 g/cm³","7 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 60 g and volume 15 cm³. Find its density.","o":["900 g/cm³","5 g/cm³","4 g/cm³","8 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 60 g and volume 20 cm³. Find its density.","o":["6 g/cm³","3 g/cm³","4 g/cm³","1200 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 240 g and volume 16 cm³. Find its density.","o":["30 g/cm³","3840 g/cm³","15 g/cm³","16 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 560 g and volume 2 cm³. Find its density.","o":["281 g/cm³","1120 g/cm³","280 g/cm³","560 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 510 g and volume 15 cm³. Find its density.","o":["7650 g/cm³","34 g/cm³","68 g/cm³","35 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 20 g and volume 4 cm³. Find its density.","o":["6 g/cm³","10 g/cm³","80 g/cm³","5 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 430 g and volume 5 cm³. Find its density.","o":["2150 g/cm³","87 g/cm³","86 g/cm³","172 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 420 g and volume 28 cm³. Find its density.","o":["30 g/cm³","11760 g/cm³","15 g/cm³","16 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 90 g and volume 5 cm³. Find its density.","o":["36 g/cm³","18 g/cm³","19 g/cm³","450 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 520 g and volume 10 cm³. Find its density.","o":["52 g/cm³","104 g/cm³","5200 g/cm³","53 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 390 g and volume 2 cm³. Find its density.","o":["780 g/cm³","196 g/cm³","390 g/cm³","195 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 360 g and volume 12 cm³. Find its density.","o":["4320 g/cm³","30 g/cm³","31 g/cm³","60 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 540 g and volume 27 cm³. Find its density.","o":["40 g/cm³","21 g/cm³","20 g/cm³","14580 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 30 g and volume 3 cm³. Find its density.","o":["20 g/cm³","10 g/cm³","90 g/cm³","11 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 200 g and volume 25 cm³. Find its density.","o":["8 g/cm³","9 g/cm³","5000 g/cm³","16 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 500 g and volume 25 cm³. Find its density.","o":["20 g/cm³","12500 g/cm³","21 g/cm³","40 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 600 g and volume 2 cm³. Find its density.","o":["301 g/cm³","300 g/cm³","1200 g/cm³","600 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 410 g and volume 2 cm³. Find its density.","o":["820 g/cm³","206 g/cm³","205 g/cm³","410 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 160 g and volume 5 cm³. Find its density.","o":["32 g/cm³","33 g/cm³","64 g/cm³","800 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 460 g and volume 5 cm³. Find its density.","o":["184 g/cm³","2300 g/cm³","92 g/cm³","93 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 80 g and volume 10 cm³. Find its density.","o":["9 g/cm³","8 g/cm³","16 g/cm³","800 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 100 g and volume 20 cm³. Find its density.","o":["5 g/cm³","6 g/cm³","10 g/cm³","2000 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 210 g and volume 3 cm³. Find its density.","o":["70 g/cm³","630 g/cm³","140 g/cm³","71 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 470 g and volume 5 cm³. Find its density.","o":["94 g/cm³","188 g/cm³","95 g/cm³","2350 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 600 g and volume 12 cm³. Find its density.","o":["100 g/cm³","7200 g/cm³","50 g/cm³","51 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 460 g and volume 2 cm³. Find its density.","o":["231 g/cm³","920 g/cm³","460 g/cm³","230 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 590 g and volume 5 cm³. Find its density.","o":["119 g/cm³","2950 g/cm³","118 g/cm³","236 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 520 g and volume 4 cm³. Find its density.","o":["260 g/cm³","131 g/cm³","2080 g/cm³","130 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 260 g and volume 2 cm³. Find its density.","o":["130 g/cm³","260 g/cm³","520 g/cm³","131 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 130 g and volume 2 cm³. Find its density.","o":["66 g/cm³","65 g/cm³","130 g/cm³","260 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 60 g and volume 4 cm³. Find its density.","o":["30 g/cm³","16 g/cm³","15 g/cm³","240 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 580 g and volume 2 cm³. Find its density.","o":["290 g/cm³","291 g/cm³","580 g/cm³","1160 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 50 g and volume 10 cm³. Find its density.","o":["5 g/cm³","10 g/cm³","6 g/cm³","500 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 60 g and volume 6 cm³. Find its density.","o":["360 g/cm³","20 g/cm³","10 g/cm³","11 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 420 g and volume 4 cm³. Find its density.","o":["210 g/cm³","1680 g/cm³","106 g/cm³","105 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 420 g and volume 6 cm³. Find its density.","o":["71 g/cm³","70 g/cm³","140 g/cm³","2520 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 400 g and volume 2 cm³. Find its density.","o":["400 g/cm³","201 g/cm³","800 g/cm³","200 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 590 g and volume 2 cm³. Find its density.","o":["590 g/cm³","1180 g/cm³","296 g/cm³","295 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 540 g and volume 4 cm³. Find its density.","o":["2160 g/cm³","135 g/cm³","270 g/cm³","136 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 380 g and volume 2 cm³. Find its density.","o":["380 g/cm³","190 g/cm³","191 g/cm³","760 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 320 g and volume 20 cm³. Find its density.","o":["16 g/cm³","32 g/cm³","17 g/cm³","6400 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 200 g and volume 5 cm³. Find its density.","o":["80 g/cm³","1000 g/cm³","40 g/cm³","41 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 300 g and volume 15 cm³. Find its density.","o":["20 g/cm³","4500 g/cm³","21 g/cm³","40 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 500 g and volume 10 cm³. Find its density.","o":["51 g/cm³","100 g/cm³","50 g/cm³","5000 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 340 g and volume 17 cm³. Find its density.","o":["5780 g/cm³","40 g/cm³","20 g/cm³","21 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 210 g and volume 5 cm³. Find its density.","o":["1050 g/cm³","42 g/cm³","43 g/cm³","84 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 240 g and volume 12 cm³. Find its density.","o":["20 g/cm³","21 g/cm³","40 g/cm³","2880 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 90 g and volume 6 cm³. Find its density.","o":["30 g/cm³","540 g/cm³","15 g/cm³","16 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 210 g and volume 10 cm³. Find its density.","o":["21 g/cm³","2100 g/cm³","22 g/cm³","42 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 310 g and volume 2 cm³. Find its density.","o":["155 g/cm³","156 g/cm³","620 g/cm³","310 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 120 g and volume 30 cm³. Find its density.","o":["8 g/cm³","3600 g/cm³","5 g/cm³","4 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 50 g and volume 5 cm³. Find its density.","o":["250 g/cm³","20 g/cm³","10 g/cm³","11 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 150 g and volume 2 cm³. Find its density.","o":["75 g/cm³","76 g/cm³","300 g/cm³","150 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 90 g and volume 9 cm³. Find its density.","o":["20 g/cm³","11 g/cm³","10 g/cm³","810 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 220 g and volume 2 cm³. Find its density.","o":["220 g/cm³","440 g/cm³","111 g/cm³","110 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 470 g and volume 2 cm³. Find its density.","o":["236 g/cm³","470 g/cm³","940 g/cm³","235 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 560 g and volume 20 cm³. Find its density.","o":["11200 g/cm³","28 g/cm³","29 g/cm³","56 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 450 g and volume 5 cm³. Find its density.","o":["180 g/cm³","90 g/cm³","2250 g/cm³","91 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 520 g and volume 8 cm³. Find its density.","o":["4160 g/cm³","65 g/cm³","130 g/cm³","66 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 400 g and volume 16 cm³. Find its density.","o":["50 g/cm³","25 g/cm³","26 g/cm³","6400 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 440 g and volume 8 cm³. Find its density.","o":["55 g/cm³","56 g/cm³","110 g/cm³","3520 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 550 g and volume 2 cm³. Find its density.","o":["550 g/cm³","276 g/cm³","1100 g/cm³","275 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 440 g and volume 20 cm³. Find its density.","o":["44 g/cm³","23 g/cm³","8800 g/cm³","22 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 260 g and volume 13 cm³. Find its density.","o":["40 g/cm³","3380 g/cm³","20 g/cm³","21 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 120 g and volume 6 cm³. Find its density.","o":["21 g/cm³","720 g/cm³","20 g/cm³","40 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 600 g and volume 5 cm³. Find its density.","o":["3000 g/cm³","121 g/cm³","120 g/cm³","240 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 110 g and volume 5 cm³. Find its density.","o":["22 g/cm³","23 g/cm³","44 g/cm³","550 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 260 g and volume 20 cm³. Find its density.","o":["14 g/cm³","5200 g/cm³","13 g/cm³","26 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 120 g and volume 20 cm³. Find its density.","o":["6 g/cm³","7 g/cm³","12 g/cm³","2400 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 240 g and volume 15 cm³. Find its density.","o":["17 g/cm³","32 g/cm³","16 g/cm³","3600 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 40 g and volume 4 cm³. Find its density.","o":["10 g/cm³","160 g/cm³","11 g/cm³","20 g/cm³"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 420 g and volume 12 cm³. Find its density.","o":["5040 g/cm³","70 g/cm³","36 g/cm³","35 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 270 g and volume 2 cm³. Find its density.","o":["270 g/cm³","136 g/cm³","540 g/cm³","135 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 270 g and volume 6 cm³. Find its density.","o":["46 g/cm³","1620 g/cm³","45 g/cm³","90 g/cm³"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 70 g and volume 2 cm³. Find its density.","o":["36 g/cm³","35 g/cm³","140 g/cm³","70 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 160 g and volume 10 cm³. Find its density.","o":["32 g/cm³","1600 g/cm³","17 g/cm³","16 g/cm³"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A body has mass 260 g and volume 4 cm³. Find its density.","o":["1040 g/cm³","65 g/cm³","66 g/cm³","130 g/cm³"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 570 N acts on an area of 2 m². Calculate the pressure.","o":["1140 Pa","287 Pa","285 Pa","570 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 100 N acts on an area of 4 m². Calculate the pressure.","o":["29 Pa","400 Pa","50 Pa","25 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 240 N acts on an area of 2 m². Calculate the pressure.","o":["122 Pa","480 Pa","240 Pa","120 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 70 N acts on an area of 10 m². Calculate the pressure.","o":["7 Pa","14 Pa","17 Pa","700 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 260 N acts on an area of 2 m². Calculate the pressure.","o":["130 Pa","260 Pa","132 Pa","520 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 290 N acts on an area of 10 m². Calculate the pressure.","o":["2900 Pa","29 Pa","39 Pa","58 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 420 N acts on an area of 4 m². Calculate the pressure.","o":["109 Pa","210 Pa","105 Pa","1680 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 380 N acts on an area of 5 m². Calculate the pressure.","o":["1900 Pa","76 Pa","152 Pa","81 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 330 N acts on an area of 6 m². Calculate the pressure.","o":["61 Pa","1980 Pa","55 Pa","110 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 370 N acts on an area of 10 m². Calculate the pressure.","o":["37 Pa","74 Pa","47 Pa","3700 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 540 N acts on an area of 6 m². Calculate the pressure.","o":["3240 Pa","180 Pa","90 Pa","96 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 180 N acts on an area of 2 m². Calculate the pressure.","o":["92 Pa","180 Pa","90 Pa","360 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 520 N acts on an area of 5 m². Calculate the pressure.","o":["104 Pa","2600 Pa","109 Pa","208 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 210 N acts on an area of 10 m². Calculate the pressure.","o":["2100 Pa","42 Pa","31 Pa","21 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 180 N acts on an area of 5 m². Calculate the pressure.","o":["36 Pa","900 Pa","41 Pa","72 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 590 N acts on an area of 5 m². Calculate the pressure.","o":["236 Pa","2950 Pa","118 Pa","123 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 510 N acts on an area of 3 m². Calculate the pressure.","o":["1530 Pa","170 Pa","173 Pa","340 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 600 N acts on an area of 2 m². Calculate the pressure.","o":["302 Pa","1200 Pa","300 Pa","600 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 440 N acts on an area of 20 m². Calculate the pressure.","o":["42 Pa","22 Pa","44 Pa","8800 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 260 N acts on an area of 13 m². Calculate the pressure.","o":["33 Pa","20 Pa","40 Pa","3380 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 420 N acts on an area of 15 m². Calculate the pressure.","o":["56 Pa","28 Pa","6300 Pa","43 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 340 N acts on an area of 4 m². Calculate the pressure.","o":["85 Pa","89 Pa","1360 Pa","170 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 400 N acts on an area of 8 m². Calculate the pressure.","o":["3200 Pa","58 Pa","50 Pa","100 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 400 N acts on an area of 2 m². Calculate the pressure.","o":["200 Pa","400 Pa","800 Pa","202 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 280 N acts on an area of 2 m². Calculate the pressure.","o":["280 Pa","142 Pa","140 Pa","560 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 200 N acts on an area of 20 m². Calculate the pressure.","o":["20 Pa","30 Pa","10 Pa","4000 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 20 N acts on an area of 2 m². Calculate the pressure.","o":["20 Pa","12 Pa","40 Pa","10 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 140 N acts on an area of 14 m². Calculate the pressure.","o":["10 Pa","24 Pa","1960 Pa","20 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 40 N acts on an area of 20 m². Calculate the pressure.","o":["800 Pa","2 Pa","22 Pa","4 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 420 N acts on an area of 14 m². Calculate the pressure.","o":["44 Pa","5880 Pa","30 Pa","60 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 420 N acts on an area of 10 m². Calculate the pressure.","o":["84 Pa","42 Pa","4200 Pa","52 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 570 N acts on an area of 3 m². Calculate the pressure.","o":["193 Pa","1710 Pa","380 Pa","190 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 410 N acts on an area of 5 m². Calculate the pressure.","o":["2050 Pa","164 Pa","87 Pa","82 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 140 N acts on an area of 7 m². Calculate the pressure.","o":["27 Pa","40 Pa","980 Pa","20 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 60 N acts on an area of 20 m². Calculate the pressure.","o":["23 Pa","6 Pa","3 Pa","1200 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 300 N acts on an area of 5 m². Calculate the pressure.","o":["120 Pa","60 Pa","1500 Pa","65 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 270 N acts on an area of 5 m². Calculate the pressure.","o":["59 Pa","108 Pa","1350 Pa","54 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 210 N acts on an area of 5 m². Calculate the pressure.","o":["47 Pa","84 Pa","1050 Pa","42 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 70 N acts on an area of 14 m². Calculate the pressure.","o":["5 Pa","10 Pa","980 Pa","19 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 400 N acts on an area of 20 m². Calculate the pressure.","o":["40 Pa","20 Pa","8000 Pa","1 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 470 N acts on an area of 10 m². Calculate the pressure.","o":["47 Pa","57 Pa","94 Pa","4700 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 260 N acts on an area of 4 m². Calculate the pressure.","o":["69 Pa","1040 Pa","65 Pa","130 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 400 N acts on an area of 16 m². Calculate the pressure.","o":["6400 Pa","41 Pa","25 Pa","50 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 80 N acts on an area of 5 m². Calculate the pressure.","o":["32 Pa","21 Pa","400 Pa","16 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 250 N acts on an area of 10 m². Calculate the pressure.","o":["35 Pa","25 Pa","50 Pa","2500 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 180 N acts on an area of 20 m². Calculate the pressure.","o":["29 Pa","9 Pa","3600 Pa","18 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 180 N acts on an area of 4 m². Calculate the pressure.","o":["90 Pa","45 Pa","49 Pa","720 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 600 N acts on an area of 15 m². Calculate the pressure.","o":["55 Pa","80 Pa","40 Pa","9000 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 90 N acts on an area of 15 m². Calculate the pressure.","o":["6 Pa","1350 Pa","21 Pa","12 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 510 N acts on an area of 2 m². Calculate the pressure.","o":["1020 Pa","255 Pa","510 Pa","257 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 140 N acts on an area of 5 m². Calculate the pressure.","o":["33 Pa","56 Pa","700 Pa","28 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 260 N acts on an area of 20 m². Calculate the pressure.","o":["26 Pa","13 Pa","5200 Pa","33 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 240 N acts on an area of 5 m². Calculate the pressure.","o":["48 Pa","53 Pa","96 Pa","1200 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 580 N acts on an area of 10 m². Calculate the pressure.","o":["68 Pa","5800 Pa","116 Pa","58 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 190 N acts on an area of 10 m². Calculate the pressure.","o":["38 Pa","1900 Pa","29 Pa","19 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 300 N acts on an area of 12 m². Calculate the pressure.","o":["3600 Pa","25 Pa","37 Pa","50 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 530 N acts on an area of 5 m². Calculate the pressure.","o":["2650 Pa","212 Pa","106 Pa","111 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 460 N acts on an area of 20 m². Calculate the pressure.","o":["43 Pa","46 Pa","9200 Pa","23 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 20 N acts on an area of 4 m². Calculate the pressure.","o":["9 Pa","10 Pa","80 Pa","5 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 560 N acts on an area of 14 m². Calculate the pressure.","o":["80 Pa","7840 Pa","54 Pa","40 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 560 N acts on an area of 8 m². Calculate the pressure.","o":["4480 Pa","140 Pa","70 Pa","78 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 150 N acts on an area of 6 m². Calculate the pressure.","o":["50 Pa","25 Pa","31 Pa","900 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 60 N acts on an area of 2 m². Calculate the pressure.","o":["60 Pa","120 Pa","32 Pa","30 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 90 N acts on an area of 6 m². Calculate the pressure.","o":["540 Pa","15 Pa","21 Pa","30 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 480 N acts on an area of 12 m². Calculate the pressure.","o":["80 Pa","40 Pa","52 Pa","5760 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 480 N acts on an area of 16 m². Calculate the pressure.","o":["30 Pa","46 Pa","7680 Pa","60 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 440 N acts on an area of 11 m². Calculate the pressure.","o":["80 Pa","51 Pa","40 Pa","4840 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 550 N acts on an area of 2 m². Calculate the pressure.","o":["1100 Pa","550 Pa","275 Pa","277 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 500 N acts on an area of 10 m². Calculate the pressure.","o":["5000 Pa","100 Pa","50 Pa","60 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 390 N acts on an area of 13 m². Calculate the pressure.","o":["30 Pa","5070 Pa","43 Pa","60 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 480 N acts on an area of 20 m². Calculate the pressure.","o":["44 Pa","9600 Pa","24 Pa","48 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 390 N acts on an area of 2 m². Calculate the pressure.","o":["197 Pa","390 Pa","195 Pa","780 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 380 N acts on an area of 19 m². Calculate the pressure.","o":["7220 Pa","20 Pa","39 Pa","40 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 220 N acts on an area of 11 m². Calculate the pressure.","o":["2420 Pa","20 Pa","31 Pa","40 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 570 N acts on an area of 10 m². Calculate the pressure.","o":["57 Pa","5700 Pa","114 Pa","67 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 180 N acts on an area of 15 m². Calculate the pressure.","o":["24 Pa","2700 Pa","27 Pa","12 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 280 N acts on an area of 4 m². Calculate the pressure.","o":["74 Pa","140 Pa","70 Pa","1120 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 60 N acts on an area of 4 m². Calculate the pressure.","o":["19 Pa","240 Pa","30 Pa","15 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 250 N acts on an area of 2 m². Calculate the pressure.","o":["127 Pa","250 Pa","125 Pa","500 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 300 N acts on an area of 6 m². Calculate the pressure.","o":["56 Pa","100 Pa","50 Pa","1800 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 150 N acts on an area of 10 m². Calculate the pressure.","o":["25 Pa","30 Pa","1500 Pa","15 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 110 N acts on an area of 10 m². Calculate the pressure.","o":["1100 Pa","21 Pa","22 Pa","11 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 190 N acts on an area of 5 m². Calculate the pressure.","o":["76 Pa","43 Pa","38 Pa","950 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 590 N acts on an area of 2 m². Calculate the pressure.","o":["297 Pa","295 Pa","1180 Pa","590 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 450 N acts on an area of 10 m². Calculate the pressure.","o":["4500 Pa","55 Pa","90 Pa","45 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 480 N acts on an area of 4 m². Calculate the pressure.","o":["240 Pa","120 Pa","1920 Pa","124 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 220 N acts on an area of 5 m². Calculate the pressure.","o":["1100 Pa","44 Pa","49 Pa","88 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 200 N acts on an area of 2 m². Calculate the pressure.","o":["102 Pa","400 Pa","200 Pa","100 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 150 N acts on an area of 5 m². Calculate the pressure.","o":["750 Pa","35 Pa","30 Pa","60 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 80 N acts on an area of 4 m². Calculate the pressure.","o":["24 Pa","40 Pa","20 Pa","320 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 420 N acts on an area of 12 m². Calculate the pressure.","o":["35 Pa","47 Pa","70 Pa","5040 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 60 N acts on an area of 12 m². Calculate the pressure.","o":["5 Pa","17 Pa","10 Pa","720 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 160 N acts on an area of 5 m². Calculate the pressure.","o":["37 Pa","800 Pa","64 Pa","32 Pa"],"a":3,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 450 N acts on an area of 5 m². Calculate the pressure.","o":["90 Pa","2250 Pa","180 Pa","95 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 320 N acts on an area of 2 m². Calculate the pressure.","o":["160 Pa","162 Pa","640 Pa","320 Pa"],"a":0,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 320 N acts on an area of 5 m². Calculate the pressure.","o":["69 Pa","1600 Pa","64 Pa","128 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 30 N acts on an area of 5 m². Calculate the pressure.","o":["150 Pa","6 Pa","12 Pa","11 Pa"],"a":1,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 40 N acts on an area of 4 m². Calculate the pressure.","o":["14 Pa","160 Pa","10 Pa","20 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 50 N acts on an area of 2 m². Calculate the pressure.","o":["50 Pa","27 Pa","25 Pa","100 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A force of 240 N acts on an area of 8 m². Calculate the pressure.","o":["60 Pa","38 Pa","30 Pa","1920 Pa"],"a":2,"t":"Density and Pressure","d":"Easy"},{"q":"A wave has frequency 210 Hz and wavelength 10 m. Find its speed.","o":["220 m/s","21 m/s","2100 m/s","4200 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 270 Hz and wavelength 7 m. Find its speed.","o":["1890 m/s","3780 m/s","277 m/s","1897 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 500 Hz and wavelength 1 m. Find its speed.","o":["1000 m/s","500 m/s","499 m/s","501 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 450 Hz and wavelength 1 m. Find its speed.","o":["449 m/s","451 m/s","900 m/s","450 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 240 Hz and wavelength 2 m. Find its speed.","o":["480 m/s","242 m/s","960 m/s","120 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 300 Hz and wavelength 10 m. Find its speed.","o":["6000 m/s","30 m/s","3000 m/s","310 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 120 Hz and wavelength 4 m. Find its speed.","o":["480 m/s","124 m/s","30 m/s","960 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 130 Hz and wavelength 9 m. Find its speed.","o":["139 m/s","1177 m/s","2340 m/s","1170 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 250 Hz and wavelength 2 m. Find its speed.","o":["500 m/s","1000 m/s","125 m/s","252 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 270 Hz and wavelength 1 m. Find its speed.","o":["271 m/s","269 m/s","540 m/s","270 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 340 Hz and wavelength 2 m. Find its speed.","o":["342 m/s","1360 m/s","680 m/s","170 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 430 Hz and wavelength 9 m. Find its speed.","o":["3870 m/s","439 m/s","7740 m/s","3877 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 70 Hz and wavelength 10 m. Find its speed.","o":["7 m/s","80 m/s","700 m/s","1400 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 290 Hz and wavelength 1 m. Find its speed.","o":["290 m/s","291 m/s","289 m/s","580 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 210 Hz and wavelength 4 m. Find its speed.","o":["847 m/s","840 m/s","214 m/s","1680 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 100 Hz and wavelength 6 m. Find its speed.","o":["106 m/s","1200 m/s","600 m/s","607 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 430 Hz and wavelength 2 m. Find its speed.","o":["1720 m/s","432 m/s","215 m/s","860 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 310 Hz and wavelength 6 m. Find its speed.","o":["316 m/s","3720 m/s","1867 m/s","1860 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 230 Hz and wavelength 3 m. Find its speed.","o":["690 m/s","697 m/s","1380 m/s","233 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 470 Hz and wavelength 10 m. Find its speed.","o":["4700 m/s","480 m/s","47 m/s","9400 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 500 Hz and wavelength 4 m. Find its speed.","o":["504 m/s","2000 m/s","125 m/s","4000 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 280 Hz and wavelength 1 m. Find its speed.","o":["280 m/s","560 m/s","279 m/s","281 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 280 Hz and wavelength 3 m. Find its speed.","o":["840 m/s","847 m/s","1680 m/s","283 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 300 Hz and wavelength 5 m. Find its speed.","o":["60 m/s","3000 m/s","1500 m/s","305 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 190 Hz and wavelength 5 m. Find its speed.","o":["950 m/s","1900 m/s","195 m/s","38 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 30 Hz and wavelength 9 m. Find its speed.","o":["277 m/s","39 m/s","270 m/s","540 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 40 Hz and wavelength 10 m. Find its speed.","o":["800 m/s","400 m/s","50 m/s","4 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 180 Hz and wavelength 5 m. Find its speed.","o":["1800 m/s","36 m/s","185 m/s","900 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 310 Hz and wavelength 9 m. Find its speed.","o":["319 m/s","5580 m/s","2797 m/s","2790 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 110 Hz and wavelength 2 m. Find its speed.","o":["112 m/s","55 m/s","440 m/s","220 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 310 Hz and wavelength 1 m. Find its speed.","o":["309 m/s","311 m/s","310 m/s","620 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 400 Hz and wavelength 6 m. Find its speed.","o":["4800 m/s","406 m/s","2407 m/s","2400 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 320 Hz and wavelength 8 m. Find its speed.","o":["5120 m/s","328 m/s","2560 m/s","40 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 50 Hz and wavelength 1 m. Find its speed.","o":["100 m/s","51 m/s","50 m/s","49 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 160 Hz and wavelength 2 m. Find its speed.","o":["320 m/s","80 m/s","640 m/s","162 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 100 Hz and wavelength 9 m. Find its speed.","o":["907 m/s","900 m/s","109 m/s","1800 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 430 Hz and wavelength 6 m. Find its speed.","o":["2580 m/s","436 m/s","2587 m/s","5160 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 330 Hz and wavelength 4 m. Find its speed.","o":["2640 m/s","1327 m/s","334 m/s","1320 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 330 Hz and wavelength 1 m. Find its speed.","o":["331 m/s","660 m/s","329 m/s","330 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 330 Hz and wavelength 3 m. Find its speed.","o":["1980 m/s","333 m/s","110 m/s","990 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 40 Hz and wavelength 2 m. Find its speed.","o":["80 m/s","160 m/s","20 m/s","42 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 80 Hz and wavelength 7 m. Find its speed.","o":["560 m/s","567 m/s","1120 m/s","87 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 430 Hz and wavelength 3 m. Find its speed.","o":["1290 m/s","433 m/s","2580 m/s","1297 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 400 Hz and wavelength 3 m. Find its speed.","o":["2400 m/s","1207 m/s","1200 m/s","403 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 470 Hz and wavelength 7 m. Find its speed.","o":["3290 m/s","3297 m/s","477 m/s","6580 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 100 Hz and wavelength 5 m. Find its speed.","o":["105 m/s","500 m/s","1000 m/s","20 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 40 Hz and wavelength 5 m. Find its speed.","o":["45 m/s","200 m/s","8 m/s","400 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 380 Hz and wavelength 10 m. Find its speed.","o":["7600 m/s","390 m/s","38 m/s","3800 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 360 Hz and wavelength 1 m. Find its speed.","o":["720 m/s","360 m/s","359 m/s","361 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 440 Hz and wavelength 7 m. Find its speed.","o":["3080 m/s","447 m/s","6160 m/s","3087 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 170 Hz and wavelength 7 m. Find its speed.","o":["177 m/s","1190 m/s","2380 m/s","1197 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 390 Hz and wavelength 8 m. Find its speed.","o":["3127 m/s","3120 m/s","6240 m/s","398 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 360 Hz and wavelength 3 m. Find its speed.","o":["1080 m/s","363 m/s","2160 m/s","120 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 20 Hz and wavelength 9 m. Find its speed.","o":["187 m/s","29 m/s","180 m/s","360 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 360 Hz and wavelength 9 m. Find its speed.","o":["369 m/s","3240 m/s","6480 m/s","40 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 130 Hz and wavelength 4 m. Find its speed.","o":["527 m/s","134 m/s","1040 m/s","520 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 180 Hz and wavelength 8 m. Find its speed.","o":["1447 m/s","2880 m/s","1440 m/s","188 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 250 Hz and wavelength 8 m. Find its speed.","o":["4000 m/s","258 m/s","2007 m/s","2000 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 100 Hz and wavelength 2 m. Find its speed.","o":["50 m/s","400 m/s","200 m/s","102 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 470 Hz and wavelength 5 m. Find its speed.","o":["475 m/s","94 m/s","2350 m/s","4700 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 20 Hz and wavelength 7 m. Find its speed.","o":["140 m/s","147 m/s","27 m/s","280 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 360 Hz and wavelength 4 m. Find its speed.","o":["1440 m/s","90 m/s","364 m/s","2880 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 70 Hz and wavelength 4 m. Find its speed.","o":["280 m/s","74 m/s","287 m/s","560 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 220 Hz and wavelength 1 m. Find its speed.","o":["219 m/s","440 m/s","221 m/s","220 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 160 Hz and wavelength 6 m. Find its speed.","o":["166 m/s","967 m/s","1920 m/s","960 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 220 Hz and wavelength 4 m. Find its speed.","o":["1760 m/s","224 m/s","55 m/s","880 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 40 Hz and wavelength 4 m. Find its speed.","o":["320 m/s","44 m/s","10 m/s","160 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 320 Hz and wavelength 1 m. Find its speed.","o":["640 m/s","319 m/s","321 m/s","320 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 70 Hz and wavelength 3 m. Find its speed.","o":["210 m/s","217 m/s","420 m/s","73 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 200 Hz and wavelength 5 m. Find its speed.","o":["205 m/s","40 m/s","1000 m/s","2000 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 250 Hz and wavelength 6 m. Find its speed.","o":["3000 m/s","256 m/s","1500 m/s","1507 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 480 Hz and wavelength 10 m. Find its speed.","o":["490 m/s","48 m/s","4800 m/s","9600 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 220 Hz and wavelength 3 m. Find its speed.","o":["667 m/s","1320 m/s","660 m/s","223 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 270 Hz and wavelength 10 m. Find its speed.","o":["280 m/s","5400 m/s","27 m/s","2700 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 290 Hz and wavelength 2 m. Find its speed.","o":["292 m/s","580 m/s","145 m/s","1160 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 180 Hz and wavelength 3 m. Find its speed.","o":["1080 m/s","183 m/s","60 m/s","540 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 220 Hz and wavelength 8 m. Find its speed.","o":["1760 m/s","228 m/s","1767 m/s","3520 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 440 Hz and wavelength 10 m. Find its speed.","o":["450 m/s","8800 m/s","44 m/s","4400 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 130 Hz and wavelength 10 m. Find its speed.","o":["1300 m/s","13 m/s","140 m/s","2600 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 390 Hz and wavelength 3 m. Find its speed.","o":["393 m/s","2340 m/s","1170 m/s","130 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 320 Hz and wavelength 4 m. Find its speed.","o":["324 m/s","1280 m/s","80 m/s","2560 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 370 Hz and wavelength 1 m. Find its speed.","o":["371 m/s","740 m/s","369 m/s","370 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 290 Hz and wavelength 8 m. Find its speed.","o":["298 m/s","2320 m/s","2327 m/s","4640 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 200 Hz and wavelength 2 m. Find its speed.","o":["800 m/s","100 m/s","202 m/s","400 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 70 Hz and wavelength 5 m. Find its speed.","o":["700 m/s","350 m/s","75 m/s","14 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 170 Hz and wavelength 4 m. Find its speed.","o":["687 m/s","1360 m/s","680 m/s","174 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 310 Hz and wavelength 3 m. Find its speed.","o":["930 m/s","937 m/s","1860 m/s","313 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 420 Hz and wavelength 8 m. Find its speed.","o":["3367 m/s","3360 m/s","428 m/s","6720 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 110 Hz and wavelength 3 m. Find its speed.","o":["660 m/s","337 m/s","330 m/s","113 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 210 Hz and wavelength 7 m. Find its speed.","o":["2940 m/s","30 m/s","1470 m/s","217 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 160 Hz and wavelength 1 m. Find its speed.","o":["160 m/s","161 m/s","159 m/s","320 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 220 Hz and wavelength 10 m. Find its speed.","o":["230 m/s","2200 m/s","4400 m/s","22 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 120 Hz and wavelength 5 m. Find its speed.","o":["600 m/s","125 m/s","24 m/s","1200 m/s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 40 Hz and wavelength 1 m. Find its speed.","o":["39 m/s","40 m/s","41 m/s","80 m/s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 370 Hz and wavelength 7 m. Find its speed.","o":["5180 m/s","377 m/s","2590 m/s","2597 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 310 Hz and wavelength 7 m. Find its speed.","o":["4340 m/s","2177 m/s","317 m/s","2170 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 240 Hz and wavelength 10 m. Find its speed.","o":["24 m/s","250 m/s","4800 m/s","2400 m/s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 410 Hz and wavelength 8 m. Find its speed.","o":["418 m/s","3287 m/s","3280 m/s","6560 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 410 Hz and wavelength 4 m. Find its speed.","o":["1647 m/s","3280 m/s","1640 m/s","414 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A wave has frequency 90 Hz and wavelength 4 m. Find its speed.","o":["367 m/s","94 m/s","360 m/s","720 m/s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A source vibrates with frequency 5 Hz. What is its period?","o":["0.2 s","0.1 s","5 s","2.5 s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A source vibrates with frequency 4 Hz. What is its period?","o":["0.12 s","4 s","2 s","0.25 s"],"a":3,"t":"Waves","d":"Easy"},{"q":"A source vibrates with frequency 25 Hz. What is its period?","o":["0.04 s","25 s","0.02 s","12.5 s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A source vibrates with frequency 2 Hz. What is its period?","o":["1 s","0.25 s","0.5 s","2 s"],"a":2,"t":"Waves","d":"Easy"},{"q":"A source vibrates with frequency 50 Hz. What is its period?","o":["0.02 s","50 s","0.01 s","25 s"],"a":0,"t":"Waves","d":"Easy"},{"q":"A source vibrates with frequency 10 Hz. What is its period?","o":["5 s","0.1 s","0.05 s","10 s"],"a":1,"t":"Waves","d":"Easy"},{"q":"A source vibrates with frequency 20 Hz. What is its period?","o":["0.03 s","0.05 s","10 s","20 s"],"a":1,"t":"Waves","d":"Easy"},{"q":"How much heat is needed to raise the temperature of 19 kg of a substance of specific heat capacity 300 J/(kg·K) by 54 K?","o":["5754 J","16200 J","307800 J","615600 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 6 kg of a substance of specific heat capacity 400 J/(kg·K) by 56 K?","o":["2456 J","22400 J","268800 J","134400 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 5 kg of a substance of specific heat capacity 500 J/(kg·K) by 6 K?","o":["30000 J","2506 J","15000 J","3000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 17 kg of a substance of specific heat capacity 500 J/(kg·K) by 35 K?","o":["8535 J","17500 J","595000 J","297500 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 16 kg of a substance of specific heat capacity 500 J/(kg·K) by 10 K?","o":["5000 J","80000 J","8010 J","160000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 12 kg of a substance of specific heat capacity 800 J/(kg·K) by 18 K?","o":["172800 J","9618 J","14400 J","345600 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 10 kg of a substance of specific heat capacity 600 J/(kg·K) by 27 K?","o":["162000 J","6027 J","16200 J","324000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 10 kg of a substance of specific heat capacity 800 J/(kg·K) by 27 K?","o":["432000 J","8027 J","216000 J","21600 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 8 kg of a substance of specific heat capacity 400 J/(kg·K) by 11 K?","o":["70400 J","3211 J","35200 J","4400 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 4 kg of a substance of specific heat capacity 800 J/(kg·K) by 25 K?","o":["160000 J","80000 J","3225 J","20000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 4 kg of a substance of specific heat capacity 500 J/(kg·K) by 31 K?","o":["62000 J","15500 J","124000 J","2031 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 15 kg of a substance of specific heat capacity 800 J/(kg·K) by 20 K?","o":["16000 J","12020 J","240000 J","480000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 3 kg of a substance of specific heat capacity 500 J/(kg·K) by 59 K?","o":["1559 J","177000 J","88500 J","29500 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 13 kg of a substance of specific heat capacity 900 J/(kg·K) by 21 K?","o":["18900 J","11721 J","491400 J","245700 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 5 kg of a substance of specific heat capacity 400 J/(kg·K) by 35 K?","o":["140000 J","70000 J","14000 J","2035 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 11 kg of a substance of specific heat capacity 400 J/(kg·K) by 19 K?","o":["83600 J","7600 J","167200 J","4419 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 16 kg of a substance of specific heat capacity 600 J/(kg·K) by 51 K?","o":["9651 J","489600 J","979200 J","30600 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 8 kg of a substance of specific heat capacity 900 J/(kg·K) by 9 K?","o":["8100 J","64800 J","129600 J","7209 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 17 kg of a substance of specific heat capacity 500 J/(kg·K) by 26 K?","o":["8526 J","442000 J","13000 J","221000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 20 kg of a substance of specific heat capacity 300 J/(kg·K) by 42 K?","o":["252000 J","504000 J","6042 J","12600 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 18 kg of a substance of specific heat capacity 700 J/(kg·K) by 56 K?","o":["39200 J","705600 J","1411200 J","12656 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 17 kg of a substance of specific heat capacity 800 J/(kg·K) by 60 K?","o":["13660 J","1632000 J","816000 J","48000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 17 kg of a substance of specific heat capacity 400 J/(kg·K) by 46 K?","o":["312800 J","6846 J","18400 J","625600 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 9 kg of a substance of specific heat capacity 400 J/(kg·K) by 14 K?","o":["3614 J","50400 J","100800 J","5600 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 17 kg of a substance of specific heat capacity 800 J/(kg·K) by 43 K?","o":["34400 J","13643 J","1169600 J","584800 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 4 kg of a substance of specific heat capacity 200 J/(kg·K) by 12 K?","o":["812 J","19200 J","2400 J","9600 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 9 kg of a substance of specific heat capacity 300 J/(kg·K) by 26 K?","o":["70200 J","2726 J","7800 J","140400 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 10 kg of a substance of specific heat capacity 500 J/(kg·K) by 41 K?","o":["5041 J","410000 J","20500 J","205000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 4 kg of a substance of specific heat capacity 700 J/(kg·K) by 46 K?","o":["2846 J","257600 J","128800 J","32200 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 16 kg of a substance of specific heat capacity 700 J/(kg·K) by 41 K?","o":["11241 J","459200 J","918400 J","28700 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 17 kg of a substance of specific heat capacity 900 J/(kg·K) by 47 K?","o":["719100 J","15347 J","1438200 J","42300 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 9 kg of a substance of specific heat capacity 900 J/(kg·K) by 23 K?","o":["8123 J","186300 J","372600 J","20700 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 11 kg of a substance of specific heat capacity 400 J/(kg·K) by 9 K?","o":["79200 J","39600 J","4409 J","3600 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 6 kg of a substance of specific heat capacity 600 J/(kg·K) by 52 K?","o":["31200 J","3652 J","187200 J","374400 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 13 kg of a substance of specific heat capacity 200 J/(kg·K) by 7 K?","o":["1400 J","18200 J","2607 J","36400 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 15 kg of a substance of specific heat capacity 900 J/(kg·K) by 25 K?","o":["13525 J","337500 J","22500 J","675000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 16 kg of a substance of specific heat capacity 200 J/(kg·K) by 18 K?","o":["3600 J","115200 J","3218 J","57600 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 1 kg of a substance of specific heat capacity 200 J/(kg·K) by 45 K?","o":["18000 J","9000 J","45 J","245 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 13 kg of a substance of specific heat capacity 300 J/(kg·K) by 34 K?","o":["10200 J","132600 J","3934 J","265200 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 1 kg of a substance of specific heat capacity 400 J/(kg·K) by 48 K?","o":["448 J","19200 J","38400 J","48 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 2 kg of a substance of specific heat capacity 900 J/(kg·K) by 25 K?","o":["1825 J","45000 J","22500 J","90000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 20 kg of a substance of specific heat capacity 800 J/(kg·K) by 60 K?","o":["48000 J","960000 J","1920000 J","16060 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 6 kg of a substance of specific heat capacity 300 J/(kg·K) by 40 K?","o":["72000 J","1840 J","144000 J","12000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 15 kg of a substance of specific heat capacity 800 J/(kg·K) by 19 K?","o":["15200 J","12019 J","228000 J","456000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 5 kg of a substance of specific heat capacity 200 J/(kg·K) by 8 K?","o":["16000 J","1600 J","1008 J","8000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 2 kg of a substance of specific heat capacity 200 J/(kg·K) by 55 K?","o":["455 J","44000 J","11000 J","22000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 7 kg of a substance of specific heat capacity 400 J/(kg·K) by 50 K?","o":["20000 J","140000 J","2850 J","280000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 4 kg of a substance of specific heat capacity 200 J/(kg·K) by 32 K?","o":["51200 J","25600 J","6400 J","832 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 3 kg of a substance of specific heat capacity 300 J/(kg·K) by 12 K?","o":["3600 J","912 J","10800 J","21600 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 2 kg of a substance of specific heat capacity 600 J/(kg·K) by 39 K?","o":["1239 J","23400 J","46800 J","93600 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 6 kg of a substance of specific heat capacity 600 J/(kg·K) by 46 K?","o":["165600 J","3646 J","331200 J","27600 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 18 kg of a substance of specific heat capacity 500 J/(kg·K) by 29 K?","o":["9029 J","522000 J","261000 J","14500 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 1 kg of a substance of specific heat capacity 600 J/(kg·K) by 22 K?","o":["26400 J","622 J","22 J","13200 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 2 kg of a substance of specific heat capacity 200 J/(kg·K) by 28 K?","o":["5600 J","22400 J","428 J","11200 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 5 kg of a substance of specific heat capacity 900 J/(kg·K) by 22 K?","o":["4522 J","198000 J","19800 J","99000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 6 kg of a substance of specific heat capacity 600 J/(kg·K) by 39 K?","o":["3639 J","23400 J","140400 J","280800 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 1 kg of a substance of specific heat capacity 600 J/(kg·K) by 44 K?","o":["644 J","52800 J","44 J","26400 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 10 kg of a substance of specific heat capacity 700 J/(kg·K) by 32 K?","o":["22400 J","224000 J","7032 J","448000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 1 kg of a substance of specific heat capacity 600 J/(kg·K) by 55 K?","o":["66000 J","33000 J","55 J","655 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 6 kg of a substance of specific heat capacity 400 J/(kg·K) by 50 K?","o":["20000 J","120000 J","2450 J","240000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 8 kg of a substance of specific heat capacity 800 J/(kg·K) by 15 K?","o":["12000 J","192000 J","6415 J","96000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 3 kg of a substance of specific heat capacity 600 J/(kg·K) by 28 K?","o":["1828 J","16800 J","100800 J","50400 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 17 kg of a substance of specific heat capacity 300 J/(kg·K) by 45 K?","o":["459000 J","229500 J","13500 J","5145 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 14 kg of a substance of specific heat capacity 200 J/(kg·K) by 43 K?","o":["240800 J","2843 J","8600 J","120400 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 11 kg of a substance of specific heat capacity 200 J/(kg·K) by 37 K?","o":["162800 J","2237 J","7400 J","81400 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 14 kg of a substance of specific heat capacity 500 J/(kg·K) by 59 K?","o":["29500 J","826000 J","413000 J","7059 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 9 kg of a substance of specific heat capacity 500 J/(kg·K) by 40 K?","o":["4540 J","180000 J","20000 J","360000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 13 kg of a substance of specific heat capacity 400 J/(kg·K) by 41 K?","o":["426400 J","16400 J","213200 J","5241 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 9 kg of a substance of specific heat capacity 800 J/(kg·K) by 13 K?","o":["187200 J","10400 J","93600 J","7213 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 8 kg of a substance of specific heat capacity 400 J/(kg·K) by 31 K?","o":["12400 J","99200 J","198400 J","3231 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 15 kg of a substance of specific heat capacity 400 J/(kg·K) by 41 K?","o":["6041 J","246000 J","492000 J","16400 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 17 kg of a substance of specific heat capacity 500 J/(kg·K) by 41 K?","o":["20500 J","8541 J","348500 J","697000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 7 kg of a substance of specific heat capacity 700 J/(kg·K) by 19 K?","o":["4919 J","13300 J","93100 J","186200 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 8 kg of a substance of specific heat capacity 400 J/(kg·K) by 35 K?","o":["3235 J","112000 J","224000 J","14000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 16 kg of a substance of specific heat capacity 200 J/(kg·K) by 8 K?","o":["51200 J","3208 J","25600 J","1600 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 14 kg of a substance of specific heat capacity 600 J/(kg·K) by 24 K?","o":["14400 J","403200 J","201600 J","8424 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 9 kg of a substance of specific heat capacity 400 J/(kg·K) by 21 K?","o":["3621 J","75600 J","151200 J","8400 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 4 kg of a substance of specific heat capacity 300 J/(kg·K) by 40 K?","o":["48000 J","1240 J","12000 J","96000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 7 kg of a substance of specific heat capacity 300 J/(kg·K) by 16 K?","o":["2116 J","33600 J","4800 J","67200 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 2 kg of a substance of specific heat capacity 900 J/(kg·K) by 44 K?","o":["39600 J","158400 J","79200 J","1844 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 9 kg of a substance of specific heat capacity 800 J/(kg·K) by 36 K?","o":["518400 J","28800 J","259200 J","7236 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 1 kg of a substance of specific heat capacity 500 J/(kg·K) by 34 K?","o":["34 J","17000 J","534 J","34000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 15 kg of a substance of specific heat capacity 900 J/(kg·K) by 60 K?","o":["13560 J","54000 J","1620000 J","810000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 5 kg of a substance of specific heat capacity 400 J/(kg·K) by 16 K?","o":["6400 J","32000 J","64000 J","2016 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 19 kg of a substance of specific heat capacity 300 J/(kg·K) by 6 K?","o":["1800 J","5706 J","34200 J","68400 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 1 kg of a substance of specific heat capacity 400 J/(kg·K) by 9 K?","o":["3600 J","7200 J","409 J","9 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 18 kg of a substance of specific heat capacity 500 J/(kg·K) by 48 K?","o":["432000 J","9048 J","864000 J","24000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 19 kg of a substance of specific heat capacity 500 J/(kg·K) by 11 K?","o":["209000 J","9511 J","104500 J","5500 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 4 kg of a substance of specific heat capacity 300 J/(kg·K) by 5 K?","o":["12000 J","1205 J","1500 J","6000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 1 kg of a substance of specific heat capacity 400 J/(kg·K) by 32 K?","o":["432 J","12800 J","32 J","25600 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 13 kg of a substance of specific heat capacity 500 J/(kg·K) by 57 K?","o":["741000 J","28500 J","370500 J","6557 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 19 kg of a substance of specific heat capacity 300 J/(kg·K) by 46 K?","o":["5746 J","13800 J","524400 J","262200 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 1 kg of a substance of specific heat capacity 600 J/(kg·K) by 16 K?","o":["616 J","16 J","9600 J","19200 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 9 kg of a substance of specific heat capacity 800 J/(kg·K) by 47 K?","o":["338400 J","7247 J","676800 J","37600 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 15 kg of a substance of specific heat capacity 300 J/(kg·K) by 48 K?","o":["14400 J","4548 J","432000 J","216000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 2 kg of a substance of specific heat capacity 900 J/(kg·K) by 31 K?","o":["1831 J","55800 J","111600 J","27900 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 2 kg of a substance of specific heat capacity 400 J/(kg·K) by 20 K?","o":["16000 J","8000 J","32000 J","820 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 17 kg of a substance of specific heat capacity 900 J/(kg·K) by 12 K?","o":["183600 J","10800 J","15312 J","367200 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 17 kg of a substance of specific heat capacity 800 J/(kg·K) by 19 K?","o":["13619 J","516800 J","15200 J","258400 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"How much heat is needed to raise the temperature of 6 kg of a substance of specific heat capacity 800 J/(kg·K) by 48 K?","o":["4848 J","230400 J","38400 J","460800 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 9 kg of a solid at its melting point if its specific latent heat of fusion is 110000 J/kg.","o":["1100000 J","990000 J","110009 J","9900000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 150000 J/kg.","o":["4500000 J","450000 J","50000 J","600000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 240000 J/kg.","o":["960000 J","80000 J","720000 J","7200000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 10 kg of a solid at its melting point if its specific latent heat of fusion is 100000 J/kg.","o":["10000 J","10000000 J","1000000 J","1100000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 9 kg of a solid at its melting point if its specific latent heat of fusion is 70000 J/kg.","o":["70009 J","6300000 J","630000 J","700000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 8 kg of a solid at its melting point if its specific latent heat of fusion is 190000 J/kg.","o":["1710000 J","1520000 J","15200000 J","23750 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 8 kg of a solid at its melting point if its specific latent heat of fusion is 180000 J/kg.","o":["1440000 J","1620000 J","22500 J","14400000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 160000 J/kg.","o":["320000 J","480000 J","3200000 J","80000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 5 kg of a solid at its melting point if its specific latent heat of fusion is 240000 J/kg.","o":["1200000 J","1440000 J","12000000 J","48000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 10 kg of a solid at its melting point if its specific latent heat of fusion is 70000 J/kg.","o":["7000 J","700000 J","770000 J","7000000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 190000 J/kg.","o":["7600000 J","950000 J","760000 J","47500 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 250000 J/kg.","o":["500000 J","5000000 J","750000 J","125000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 80000 J/kg.","o":["160000 J","1600000 J","240000 J","40000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 6 kg of a solid at its melting point if its specific latent heat of fusion is 110000 J/kg.","o":["660000 J","770000 J","6600000 J","110006 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 9 kg of a solid at its melting point if its specific latent heat of fusion is 190000 J/kg.","o":["17100000 J","1710000 J","190009 J","1900000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 280000 J/kg.","o":["840000 J","560000 J","5600000 J","140000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 40000 J/kg.","o":["1600000 J","200000 J","10000 J","160000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 110000 J/kg.","o":["2200000 J","220000 J","55000 J","330000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 20000 J/kg.","o":["600000 J","20003 J","80000 J","60000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 8 kg of a solid at its melting point if its specific latent heat of fusion is 270000 J/kg.","o":["33750 J","2160000 J","21600000 J","2430000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 8 kg of a solid at its melting point if its specific latent heat of fusion is 210000 J/kg.","o":["1680000 J","26250 J","16800000 J","1890000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 8 kg of a solid at its melting point if its specific latent heat of fusion is 160000 J/kg.","o":["20000 J","1280000 J","12800000 J","1440000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 5 kg of a solid at its melting point if its specific latent heat of fusion is 70000 J/kg.","o":["3500000 J","14000 J","350000 J","420000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 10 kg of a solid at its melting point if its specific latent heat of fusion is 270000 J/kg.","o":["2970000 J","2700000 J","27000 J","27000000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 160000 J/kg.","o":["160003 J","4800000 J","480000 J","640000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 9 kg of a solid at its melting point if its specific latent heat of fusion is 20000 J/kg.","o":["20009 J","200000 J","180000 J","1800000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 20000 J/kg.","o":["60000 J","40000 J","400000 J","10000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 120000 J/kg.","o":["40000 J","480000 J","360000 J","3600000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 250000 J/kg.","o":["1000000 J","250003 J","7500000 J","750000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 150000 J/kg.","o":["3000000 J","450000 J","75000 J","300000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 8 kg of a solid at its melting point if its specific latent heat of fusion is 230000 J/kg.","o":["18400000 J","28750 J","2070000 J","1840000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 10 kg of a solid at its melting point if its specific latent heat of fusion is 20000 J/kg.","o":["2000 J","2000000 J","220000 J","200000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 190000 J/kg.","o":["190007 J","13300000 J","1520000 J","1330000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 100000 J/kg.","o":["800000 J","100007 J","700000 J","7000000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 300000 J/kg.","o":["12000000 J","1200000 J","1500000 J","75000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 160000 J/kg.","o":["40000 J","6400000 J","640000 J","800000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 240000 J/kg.","o":["9600000 J","1200000 J","60000 J","960000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 180000 J/kg.","o":["360000 J","540000 J","3600000 J","90000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 60000 J/kg.","o":["4200000 J","480000 J","420000 J","60007 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 60000 J/kg.","o":["180000 J","1200000 J","30000 J","120000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 160000 J/kg.","o":["1120000 J","160007 J","11200000 J","1280000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 9 kg of a solid at its melting point if its specific latent heat of fusion is 100000 J/kg.","o":["1000000 J","9000000 J","100009 J","900000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 10 kg of a solid at its melting point if its specific latent heat of fusion is 120000 J/kg.","o":["1320000 J","12000 J","1200000 J","12000000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 9 kg of a solid at its melting point if its specific latent heat of fusion is 220000 J/kg.","o":["1980000 J","19800000 J","2200000 J","220009 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 6 kg of a solid at its melting point if its specific latent heat of fusion is 200000 J/kg.","o":["12000000 J","1400000 J","1200000 J","200006 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 8 kg of a solid at its melting point if its specific latent heat of fusion is 140000 J/kg.","o":["1260000 J","11200000 J","1120000 J","17500 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 9 kg of a solid at its melting point if its specific latent heat of fusion is 290000 J/kg.","o":["290009 J","2610000 J","2900000 J","26100000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 50000 J/kg.","o":["50003 J","1500000 J","200000 J","150000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 300000 J/kg.","o":["6000000 J","900000 J","600000 J","150000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 8 kg of a solid at its melting point if its specific latent heat of fusion is 110000 J/kg.","o":["8800000 J","880000 J","13750 J","990000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 5 kg of a solid at its melting point if its specific latent heat of fusion is 80000 J/kg.","o":["400000 J","480000 J","16000 J","4000000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 140000 J/kg.","o":["20000 J","1120000 J","980000 J","9800000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 230000 J/kg.","o":["6900000 J","920000 J","690000 J","230003 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 90000 J/kg.","o":["720000 J","630000 J","90007 J","6300000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 230000 J/kg.","o":["115000 J","4600000 J","690000 J","460000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 150000 J/kg.","o":["1200000 J","1050000 J","150007 J","10500000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 140000 J/kg.","o":["420000 J","280000 J","2800000 J","70000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 6 kg of a solid at its melting point if its specific latent heat of fusion is 290000 J/kg.","o":["1740000 J","290006 J","2030000 J","17400000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 6 kg of a solid at its melting point if its specific latent heat of fusion is 40000 J/kg.","o":["2400000 J","280000 J","240000 J","40006 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 9 kg of a solid at its melting point if its specific latent heat of fusion is 200000 J/kg.","o":["200009 J","2000000 J","18000000 J","1800000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 290000 J/kg.","o":["72500 J","1160000 J","1450000 J","11600000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 5 kg of a solid at its melting point if its specific latent heat of fusion is 60000 J/kg.","o":["360000 J","3000000 J","12000 J","300000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 5 kg of a solid at its melting point if its specific latent heat of fusion is 280000 J/kg.","o":["1400000 J","14000000 J","56000 J","1680000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 70000 J/kg.","o":["2800000 J","280000 J","17500 J","350000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 120000 J/kg.","o":["120007 J","8400000 J","840000 J","960000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 270000 J/kg.","o":["2160000 J","270007 J","1890000 J","18900000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 10 kg of a solid at its melting point if its specific latent heat of fusion is 80000 J/kg.","o":["8000 J","880000 J","800000 J","8000000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 280000 J/kg.","o":["1400000 J","70000 J","11200000 J","1120000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 290000 J/kg.","o":["870000 J","8700000 J","1160000 J","290003 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 8 kg of a solid at its melting point if its specific latent heat of fusion is 70000 J/kg.","o":["8750 J","630000 J","560000 J","5600000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 170000 J/kg.","o":["850000 J","680000 J","6800000 J","42500 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 40000 J/kg.","o":["280000 J","320000 J","2800000 J","40007 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 80000 J/kg.","o":["20000 J","320000 J","3200000 J","400000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 5 kg of a solid at its melting point if its specific latent heat of fusion is 200000 J/kg.","o":["40000 J","1000000 J","1200000 J","10000000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 5 kg of a solid at its melting point if its specific latent heat of fusion is 260000 J/kg.","o":["13000000 J","52000 J","1300000 J","1560000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 9 kg of a solid at its melting point if its specific latent heat of fusion is 90000 J/kg.","o":["10000 J","8100000 J","900000 J","810000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 8 kg of a solid at its melting point if its specific latent heat of fusion is 20000 J/kg.","o":["180000 J","1600000 J","2500 J","160000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 30000 J/kg.","o":["210000 J","240000 J","2100000 J","30007 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 10 kg of a solid at its melting point if its specific latent heat of fusion is 90000 J/kg.","o":["9000000 J","900000 J","990000 J","9000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 90000 J/kg.","o":["30000 J","2700000 J","360000 J","270000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 260000 J/kg.","o":["520000 J","5200000 J","780000 J","130000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 30000 J/kg.","o":["10000 J","900000 J","120000 J","90000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 9 kg of a solid at its melting point if its specific latent heat of fusion is 40000 J/kg.","o":["400000 J","40009 J","3600000 J","360000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 9 kg of a solid at its melting point if its specific latent heat of fusion is 30000 J/kg.","o":["270000 J","2700000 J","300000 J","30009 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 10 kg of a solid at its melting point if its specific latent heat of fusion is 300000 J/kg.","o":["30000000 J","3000000 J","3300000 J","30000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 120000 J/kg.","o":["4800000 J","480000 J","600000 J","30000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 220000 J/kg.","o":["1760000 J","1540000 J","15400000 J","220007 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 6 kg of a solid at its melting point if its specific latent heat of fusion is 50000 J/kg.","o":["300000 J","350000 J","3000000 J","50006 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 6 kg of a solid at its melting point if its specific latent heat of fusion is 130000 J/kg.","o":["130006 J","7800000 J","910000 J","780000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 100000 J/kg.","o":["4000000 J","25000 J","500000 J","400000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 10 kg of a solid at its melting point if its specific latent heat of fusion is 280000 J/kg.","o":["28000 J","2800000 J","28000000 J","3080000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 8 kg of a solid at its melting point if its specific latent heat of fusion is 220000 J/kg.","o":["1760000 J","27500 J","1980000 J","17600000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 190000 J/kg.","o":["5700000 J","190003 J","760000 J","570000 J"],"a":3,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 5 kg of a solid at its melting point if its specific latent heat of fusion is 40000 J/kg.","o":["2000000 J","8000 J","200000 J","240000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 2 kg of a solid at its melting point if its specific latent heat of fusion is 220000 J/kg.","o":["440000 J","660000 J","110000 J","4400000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 150000 J/kg.","o":["37500 J","6000000 J","600000 J","750000 J"],"a":2,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 7 kg of a solid at its melting point if its specific latent heat of fusion is 240000 J/kg.","o":["1680000 J","16800000 J","1920000 J","240007 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 4 kg of a solid at its melting point if its specific latent heat of fusion is 60000 J/kg.","o":["240000 J","15000 J","2400000 J","300000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 6 kg of a solid at its melting point if its specific latent heat of fusion is 160000 J/kg.","o":["160006 J","960000 J","1120000 J","9600000 J"],"a":1,"t":"Heat","d":"Medium"},{"q":"Find the energy required to melt 3 kg of a solid at its melting point if its specific latent heat of fusion is 80000 J/kg.","o":["240000 J","80003 J","320000 J","2400000 J"],"a":0,"t":"Heat","d":"Medium"},{"q":"An object is placed 90 cm from a converging lens of focal length 30 cm. Find the image distance.","o":["75 cm","45 cm","120 cm","60 cm"],"a":1,"t":"Light","d":"Hard"},{"q":"An object is placed 60 cm from a converging lens of focal length 15 cm. Find the image distance.","o":["20 cm","75 cm","35 cm","45 cm"],"a":0,"t":"Light","d":"Hard"},{"q":"An object is placed 60 cm from a converging lens of focal length 20 cm. Find the image distance.","o":["30 cm","80 cm","50 cm","40 cm"],"a":0,"t":"Light","d":"Hard"},{"q":"An object is placed 100 cm from a converging lens of focal length 20 cm. Find the image distance.","o":["45 cm","120 cm","80 cm","25 cm"],"a":3,"t":"Light","d":"Hard"},{"q":"An object is placed 30 cm from a converging lens of focal length 10 cm. Find the image distance.","o":["40 cm","25 cm","15 cm","20 cm"],"a":2,"t":"Light","d":"Hard"},{"q":"An object is placed 120 cm from a converging lens of focal length 30 cm. Find the image distance.","o":["90 cm","70 cm","150 cm","40 cm"],"a":3,"t":"Light","d":"Hard"},{"q":"Find the momentum of a 39 kg body moving at 28 m/s.","o":["546 kg m/s","1092 kg m/s","67 kg m/s","2184 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 22 kg body moving at 24 m/s.","o":["264 kg m/s","1056 kg m/s","528 kg m/s","46 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 13 kg body moving at 10 m/s.","o":["23 kg m/s","130 kg m/s","65 kg m/s","260 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 39 kg body moving at 30 m/s.","o":["2340 kg m/s","1170 kg m/s","585 kg m/s","69 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 49 kg body moving at 2 m/s.","o":["196 kg m/s","98 kg m/s","51 kg m/s","49 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 25 kg body moving at 15 m/s.","o":["375 kg m/s","380 kg m/s","40 kg m/s","750 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 49 kg body moving at 11 m/s.","o":["1078 kg m/s","539 kg m/s","544 kg m/s","60 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 25 kg body moving at 30 m/s.","o":["750 kg m/s","1500 kg m/s","55 kg m/s","375 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 43 kg body moving at 8 m/s.","o":["172 kg m/s","688 kg m/s","344 kg m/s","51 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 36 kg body moving at 27 m/s.","o":["972 kg m/s","486 kg m/s","1944 kg m/s","63 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 25 kg body moving at 12 m/s.","o":["150 kg m/s","37 kg m/s","300 kg m/s","600 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 12 kg body moving at 10 m/s.","o":["22 kg m/s","60 kg m/s","240 kg m/s","120 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 49 kg body moving at 7 m/s.","o":["343 kg m/s","56 kg m/s","348 kg m/s","686 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 11 kg body moving at 28 m/s.","o":["39 kg m/s","308 kg m/s","154 kg m/s","616 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 6 kg body moving at 22 m/s.","o":["28 kg m/s","66 kg m/s","264 kg m/s","132 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 35 kg body moving at 28 m/s.","o":["1960 kg m/s","980 kg m/s","63 kg m/s","490 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 8 kg body moving at 14 m/s.","o":["224 kg m/s","56 kg m/s","112 kg m/s","22 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 16 kg body moving at 7 m/s.","o":["224 kg m/s","112 kg m/s","23 kg m/s","56 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 54 kg body moving at 11 m/s.","o":["297 kg m/s","65 kg m/s","1188 kg m/s","594 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 6 kg body moving at 19 m/s.","o":["228 kg m/s","57 kg m/s","25 kg m/s","114 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 11 kg body moving at 13 m/s.","o":["143 kg m/s","148 kg m/s","24 kg m/s","286 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 1 kg body moving at 23 m/s.","o":["46 kg m/s","24 kg m/s","23 kg m/s","28 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 16 kg body moving at 26 m/s.","o":["416 kg m/s","42 kg m/s","832 kg m/s","208 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 15 kg body moving at 19 m/s.","o":["290 kg m/s","285 kg m/s","34 kg m/s","570 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 15 kg body moving at 29 m/s.","o":["44 kg m/s","870 kg m/s","440 kg m/s","435 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 8 kg body moving at 29 m/s.","o":["116 kg m/s","232 kg m/s","464 kg m/s","37 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 59 kg body moving at 11 m/s.","o":["654 kg m/s","649 kg m/s","1298 kg m/s","70 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 57 kg body moving at 2 m/s.","o":["114 kg m/s","57 kg m/s","59 kg m/s","228 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 52 kg body moving at 5 m/s.","o":["130 kg m/s","260 kg m/s","57 kg m/s","520 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 41 kg body moving at 14 m/s.","o":["574 kg m/s","287 kg m/s","55 kg m/s","1148 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 24 kg body moving at 28 m/s.","o":["52 kg m/s","1344 kg m/s","336 kg m/s","672 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 44 kg body moving at 25 m/s.","o":["550 kg m/s","1100 kg m/s","2200 kg m/s","69 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 42 kg body moving at 18 m/s.","o":["378 kg m/s","60 kg m/s","1512 kg m/s","756 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 38 kg body moving at 11 m/s.","o":["49 kg m/s","418 kg m/s","836 kg m/s","209 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 47 kg body moving at 23 m/s.","o":["1086 kg m/s","1081 kg m/s","70 kg m/s","2162 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 3 kg body moving at 8 m/s.","o":["48 kg m/s","24 kg m/s","12 kg m/s","11 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 32 kg body moving at 25 m/s.","o":["1600 kg m/s","400 kg m/s","800 kg m/s","57 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 5 kg body moving at 18 m/s.","o":["90 kg m/s","45 kg m/s","23 kg m/s","180 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 30 kg body moving at 30 m/s.","o":["450 kg m/s","60 kg m/s","900 kg m/s","1800 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 25 kg body moving at 27 m/s.","o":["1350 kg m/s","675 kg m/s","52 kg m/s","680 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 18 kg body moving at 19 m/s.","o":["171 kg m/s","342 kg m/s","684 kg m/s","37 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 18 kg body moving at 29 m/s.","o":["47 kg m/s","522 kg m/s","1044 kg m/s","261 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 55 kg body moving at 27 m/s.","o":["1485 kg m/s","1490 kg m/s","2970 kg m/s","82 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 30 kg body moving at 4 m/s.","o":["240 kg m/s","34 kg m/s","120 kg m/s","60 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 51 kg body moving at 5 m/s.","o":["56 kg m/s","260 kg m/s","255 kg m/s","510 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 57 kg body moving at 28 m/s.","o":["85 kg m/s","3192 kg m/s","798 kg m/s","1596 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 42 kg body moving at 5 m/s.","o":["210 kg m/s","47 kg m/s","105 kg m/s","420 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 38 kg body moving at 29 m/s.","o":["2204 kg m/s","67 kg m/s","551 kg m/s","1102 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 46 kg body moving at 19 m/s.","o":["65 kg m/s","437 kg m/s","1748 kg m/s","874 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 38 kg body moving at 30 m/s.","o":["2280 kg m/s","1140 kg m/s","68 kg m/s","570 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 55 kg body moving at 30 m/s.","o":["825 kg m/s","3300 kg m/s","85 kg m/s","1650 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 8 kg body moving at 8 m/s.","o":["16 kg m/s","32 kg m/s","128 kg m/s","64 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 33 kg body moving at 22 m/s.","o":["363 kg m/s","726 kg m/s","55 kg m/s","1452 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 56 kg body moving at 16 m/s.","o":["1792 kg m/s","448 kg m/s","72 kg m/s","896 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 60 kg body moving at 26 m/s.","o":["86 kg m/s","3120 kg m/s","780 kg m/s","1560 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 40 kg body moving at 2 m/s.","o":["80 kg m/s","160 kg m/s","40 kg m/s","42 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 49 kg body moving at 22 m/s.","o":["1078 kg m/s","71 kg m/s","2156 kg m/s","539 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 25 kg body moving at 20 m/s.","o":["45 kg m/s","250 kg m/s","1000 kg m/s","500 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 2 kg body moving at 14 m/s.","o":["16 kg m/s","56 kg m/s","28 kg m/s","14 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 59 kg body moving at 17 m/s.","o":["76 kg m/s","2006 kg m/s","1008 kg m/s","1003 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 44 kg body moving at 5 m/s.","o":["110 kg m/s","49 kg m/s","220 kg m/s","440 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 46 kg body moving at 7 m/s.","o":["161 kg m/s","53 kg m/s","644 kg m/s","322 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 14 kg body moving at 12 m/s.","o":["168 kg m/s","26 kg m/s","84 kg m/s","336 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 58 kg body moving at 27 m/s.","o":["1566 kg m/s","3132 kg m/s","85 kg m/s","783 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 60 kg body moving at 7 m/s.","o":["67 kg m/s","210 kg m/s","840 kg m/s","420 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 23 kg body moving at 28 m/s.","o":["644 kg m/s","1288 kg m/s","51 kg m/s","322 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 7 kg body moving at 30 m/s.","o":["105 kg m/s","210 kg m/s","37 kg m/s","420 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 55 kg body moving at 28 m/s.","o":["83 kg m/s","1540 kg m/s","770 kg m/s","3080 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 53 kg body moving at 2 m/s.","o":["212 kg m/s","53 kg m/s","55 kg m/s","106 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 20 kg body moving at 5 m/s.","o":["200 kg m/s","25 kg m/s","50 kg m/s","100 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 30 kg body moving at 3 m/s.","o":["33 kg m/s","45 kg m/s","90 kg m/s","180 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 47 kg body moving at 8 m/s.","o":["752 kg m/s","188 kg m/s","55 kg m/s","376 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 10 kg body moving at 9 m/s.","o":["180 kg m/s","45 kg m/s","19 kg m/s","90 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 10 kg body moving at 23 m/s.","o":["33 kg m/s","115 kg m/s","460 kg m/s","230 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 47 kg body moving at 3 m/s.","o":["50 kg m/s","282 kg m/s","141 kg m/s","146 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 53 kg body moving at 18 m/s.","o":["477 kg m/s","954 kg m/s","71 kg m/s","1908 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 36 kg body moving at 17 m/s.","o":["53 kg m/s","612 kg m/s","1224 kg m/s","306 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 38 kg body moving at 4 m/s.","o":["152 kg m/s","76 kg m/s","304 kg m/s","42 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 55 kg body moving at 19 m/s.","o":["1045 kg m/s","2090 kg m/s","1050 kg m/s","74 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 31 kg body moving at 23 m/s.","o":["1426 kg m/s","718 kg m/s","54 kg m/s","713 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 42 kg body moving at 27 m/s.","o":["1134 kg m/s","69 kg m/s","2268 kg m/s","567 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 58 kg body moving at 3 m/s.","o":["174 kg m/s","87 kg m/s","348 kg m/s","61 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 60 kg body moving at 15 m/s.","o":["75 kg m/s","900 kg m/s","450 kg m/s","1800 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 25 kg body moving at 23 m/s.","o":["48 kg m/s","575 kg m/s","1150 kg m/s","580 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 35 kg body moving at 15 m/s.","o":["50 kg m/s","1050 kg m/s","525 kg m/s","530 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 49 kg body moving at 6 m/s.","o":["588 kg m/s","147 kg m/s","294 kg m/s","55 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 30 kg body moving at 28 m/s.","o":["1680 kg m/s","420 kg m/s","840 kg m/s","58 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 2 kg body moving at 30 m/s.","o":["32 kg m/s","60 kg m/s","120 kg m/s","30 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 55 kg body moving at 5 m/s.","o":["280 kg m/s","275 kg m/s","550 kg m/s","60 kg m/s"],"a":1,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 10 kg body moving at 12 m/s.","o":["240 kg m/s","22 kg m/s","60 kg m/s","120 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 46 kg body moving at 30 m/s.","o":["690 kg m/s","2760 kg m/s","1380 kg m/s","76 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 44 kg body moving at 6 m/s.","o":["264 kg m/s","50 kg m/s","528 kg m/s","132 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 34 kg body moving at 26 m/s.","o":["60 kg m/s","442 kg m/s","1768 kg m/s","884 kg m/s"],"a":3,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 47 kg body moving at 19 m/s.","o":["893 kg m/s","1786 kg m/s","898 kg m/s","66 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 5 kg body moving at 26 m/s.","o":["130 kg m/s","31 kg m/s","65 kg m/s","260 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 6 kg body moving at 11 m/s.","o":["66 kg m/s","132 kg m/s","17 kg m/s","33 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 40 kg body moving at 21 m/s.","o":["420 kg m/s","61 kg m/s","840 kg m/s","1680 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 50 kg body moving at 5 m/s.","o":["500 kg m/s","125 kg m/s","250 kg m/s","55 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 34 kg body moving at 24 m/s.","o":["816 kg m/s","1632 kg m/s","58 kg m/s","408 kg m/s"],"a":0,"t":"Dynamics","d":"Easy"},{"q":"Find the momentum of a 22 kg body moving at 20 m/s.","o":["880 kg m/s","220 kg m/s","440 kg m/s","42 kg m/s"],"a":2,"t":"Dynamics","d":"Easy"},{"q":"A machine receives 2200 J of energy and delivers 1650 J as useful output. Find its efficiency.","o":["85%","75%","65%","25%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3200 J of energy and delivers 2400 J as useful output. Find its efficiency.","o":["65%","75%","25%","85%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3100 J of energy and delivers 2480 J as useful output. Find its efficiency.","o":["70%","90%","80%","20%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2300 J of energy and delivers 1725 J as useful output. Find its efficiency.","o":["85%","25%","75%","65%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3700 J of energy and delivers 2775 J as useful output. Find its efficiency.","o":["25%","85%","75%","65%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1300 J of energy and delivers 325 J as useful output. Find its efficiency.","o":["15%","75%","35%","25%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3100 J of energy and delivers 2325 J as useful output. Find its efficiency.","o":["25%","75%","85%","65%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3400 J of energy and delivers 1360 J as useful output. Find its efficiency.","o":["30%","60%","40%","50%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1000 J of energy and delivers 750 J as useful output. Find its efficiency.","o":["65%","75%","85%","25%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 200 J of energy and delivers 80 J as useful output. Find its efficiency.","o":["50%","40%","30%","60%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2400 J of energy and delivers 1200 J as useful output. Find its efficiency.","o":["40%","50%","60%","25%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1200 J of energy and delivers 900 J as useful output. Find its efficiency.","o":["85%","25%","75%","65%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1500 J of energy and delivers 300 J as useful output. Find its efficiency.","o":["80%","10%","20%","30%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 200 J of energy and delivers 160 J as useful output. Find its efficiency.","o":["80%","90%","20%","70%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 400 J of energy and delivers 300 J as useful output. Find its efficiency.","o":["75%","65%","85%","25%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1500 J of energy and delivers 1125 J as useful output. Find its efficiency.","o":["85%","65%","25%","75%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2700 J of energy and delivers 2160 J as useful output. Find its efficiency.","o":["80%","20%","70%","90%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 300 J of energy and delivers 120 J as useful output. Find its efficiency.","o":["40%","50%","60%","30%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3000 J of energy and delivers 1200 J as useful output. Find its efficiency.","o":["60%","40%","30%","50%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 600 J of energy and delivers 360 J as useful output. Find its efficiency.","o":["60%","50%","70%","40%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2900 J of energy and delivers 2175 J as useful output. Find its efficiency.","o":["85%","75%","25%","65%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3700 J of energy and delivers 1480 J as useful output. Find its efficiency.","o":["40%","50%","30%","60%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1600 J of energy and delivers 1280 J as useful output. Find its efficiency.","o":["90%","20%","70%","80%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2500 J of energy and delivers 500 J as useful output. Find its efficiency.","o":["10%","20%","30%","80%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 800 J of energy and delivers 480 J as useful output. Find its efficiency.","o":["70%","60%","50%","40%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3500 J of energy and delivers 2625 J as useful output. Find its efficiency.","o":["25%","65%","75%","85%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1600 J of energy and delivers 800 J as useful output. Find its efficiency.","o":["25%","50%","40%","60%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3600 J of energy and delivers 900 J as useful output. Find its efficiency.","o":["15%","75%","25%","35%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3300 J of energy and delivers 825 J as useful output. Find its efficiency.","o":["25%","75%","35%","15%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3300 J of energy and delivers 660 J as useful output. Find its efficiency.","o":["10%","20%","30%","80%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1400 J of energy and delivers 560 J as useful output. Find its efficiency.","o":["50%","40%","30%","60%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1500 J of energy and delivers 1200 J as useful output. Find its efficiency.","o":["90%","70%","80%","20%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3700 J of energy and delivers 2960 J as useful output. Find its efficiency.","o":["90%","80%","20%","70%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2900 J of energy and delivers 1740 J as useful output. Find its efficiency.","o":["40%","60%","70%","50%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2700 J of energy and delivers 675 J as useful output. Find its efficiency.","o":["15%","35%","25%","75%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1400 J of energy and delivers 280 J as useful output. Find its efficiency.","o":["20%","30%","10%","80%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3100 J of energy and delivers 1860 J as useful output. Find its efficiency.","o":["60%","40%","50%","70%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2200 J of energy and delivers 880 J as useful output. Find its efficiency.","o":["40%","60%","50%","30%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2100 J of energy and delivers 1575 J as useful output. Find its efficiency.","o":["65%","75%","85%","25%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2100 J of energy and delivers 1260 J as useful output. Find its efficiency.","o":["40%","50%","60%","70%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1700 J of energy and delivers 1275 J as useful output. Find its efficiency.","o":["65%","85%","25%","75%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1600 J of energy and delivers 640 J as useful output. Find its efficiency.","o":["60%","40%","30%","50%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2300 J of energy and delivers 575 J as useful output. Find its efficiency.","o":["25%","35%","75%","15%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3400 J of energy and delivers 2720 J as useful output. Find its efficiency.","o":["90%","20%","80%","70%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 900 J of energy and delivers 360 J as useful output. Find its efficiency.","o":["50%","40%","30%","60%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2800 J of energy and delivers 1120 J as useful output. Find its efficiency.","o":["30%","50%","60%","40%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3800 J of energy and delivers 2850 J as useful output. Find its efficiency.","o":["65%","75%","25%","85%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3800 J of energy and delivers 760 J as useful output. Find its efficiency.","o":["30%","20%","10%","80%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1900 J of energy and delivers 760 J as useful output. Find its efficiency.","o":["60%","40%","30%","50%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1600 J of energy and delivers 320 J as useful output. Find its efficiency.","o":["10%","80%","20%","30%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3600 J of energy and delivers 720 J as useful output. Find its efficiency.","o":["30%","10%","20%","80%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 500 J of energy and delivers 100 J as useful output. Find its efficiency.","o":["30%","20%","80%","10%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3600 J of energy and delivers 2700 J as useful output. Find its efficiency.","o":["25%","75%","85%","65%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2200 J of energy and delivers 440 J as useful output. Find its efficiency.","o":["10%","80%","20%","30%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3800 J of energy and delivers 3040 J as useful output. Find its efficiency.","o":["20%","70%","80%","90%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3300 J of energy and delivers 1650 J as useful output. Find its efficiency.","o":["60%","40%","25%","50%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 900 J of energy and delivers 720 J as useful output. Find its efficiency.","o":["20%","90%","80%","70%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3800 J of energy and delivers 1520 J as useful output. Find its efficiency.","o":["30%","50%","40%","60%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1400 J of energy and delivers 1050 J as useful output. Find its efficiency.","o":["25%","75%","85%","65%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1400 J of energy and delivers 1120 J as useful output. Find its efficiency.","o":["20%","70%","80%","90%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1200 J of energy and delivers 960 J as useful output. Find its efficiency.","o":["70%","80%","20%","90%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1900 J of energy and delivers 1520 J as useful output. Find its efficiency.","o":["80%","90%","70%","20%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1100 J of energy and delivers 825 J as useful output. Find its efficiency.","o":["85%","75%","25%","65%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1600 J of energy and delivers 1200 J as useful output. Find its efficiency.","o":["85%","75%","25%","65%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2600 J of energy and delivers 1560 J as useful output. Find its efficiency.","o":["50%","40%","70%","60%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2000 J of energy and delivers 1500 J as useful output. Find its efficiency.","o":["65%","25%","75%","85%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3900 J of energy and delivers 1560 J as useful output. Find its efficiency.","o":["30%","60%","50%","40%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 4000 J of energy and delivers 3000 J as useful output. Find its efficiency.","o":["85%","75%","65%","25%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 500 J of energy and delivers 375 J as useful output. Find its efficiency.","o":["25%","75%","65%","85%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3600 J of energy and delivers 1800 J as useful output. Find its efficiency.","o":["50%","25%","60%","40%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 200 J of energy and delivers 150 J as useful output. Find its efficiency.","o":["85%","65%","25%","75%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1000 J of energy and delivers 600 J as useful output. Find its efficiency.","o":["40%","70%","60%","50%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 800 J of energy and delivers 160 J as useful output. Find its efficiency.","o":["80%","30%","20%","10%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3500 J of energy and delivers 875 J as useful output. Find its efficiency.","o":["25%","75%","35%","15%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2800 J of energy and delivers 700 J as useful output. Find its efficiency.","o":["35%","75%","15%","25%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 400 J of energy and delivers 320 J as useful output. Find its efficiency.","o":["80%","70%","20%","90%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 600 J of energy and delivers 120 J as useful output. Find its efficiency.","o":["30%","20%","80%","10%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1700 J of energy and delivers 680 J as useful output. Find its efficiency.","o":["50%","40%","30%","60%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1900 J of energy and delivers 1140 J as useful output. Find its efficiency.","o":["40%","70%","50%","60%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 600 J of energy and delivers 300 J as useful output. Find its efficiency.","o":["60%","40%","25%","50%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 500 J of energy and delivers 400 J as useful output. Find its efficiency.","o":["80%","70%","90%","20%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 800 J of energy and delivers 640 J as useful output. Find its efficiency.","o":["80%","70%","20%","90%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1900 J of energy and delivers 1425 J as useful output. Find its efficiency.","o":["75%","65%","85%","25%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1800 J of energy and delivers 1080 J as useful output. Find its efficiency.","o":["70%","40%","50%","60%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2400 J of energy and delivers 960 J as useful output. Find its efficiency.","o":["30%","60%","50%","40%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1200 J of energy and delivers 300 J as useful output. Find its efficiency.","o":["25%","15%","35%","75%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1200 J of energy and delivers 720 J as useful output. Find its efficiency.","o":["70%","50%","60%","40%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2600 J of energy and delivers 1950 J as useful output. Find its efficiency.","o":["85%","65%","75%","25%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 1200 J of energy and delivers 480 J as useful output. Find its efficiency.","o":["60%","30%","50%","40%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 700 J of energy and delivers 560 J as useful output. Find its efficiency.","o":["90%","70%","20%","80%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2900 J of energy and delivers 1160 J as useful output. Find its efficiency.","o":["30%","50%","60%","40%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2200 J of energy and delivers 1100 J as useful output. Find its efficiency.","o":["40%","25%","60%","50%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2000 J of energy and delivers 800 J as useful output. Find its efficiency.","o":["30%","60%","50%","40%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3000 J of energy and delivers 2250 J as useful output. Find its efficiency.","o":["75%","85%","25%","65%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2000 J of energy and delivers 1600 J as useful output. Find its efficiency.","o":["80%","70%","90%","20%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 900 J of energy and delivers 225 J as useful output. Find its efficiency.","o":["35%","15%","75%","25%"],"a":3,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2100 J of energy and delivers 525 J as useful output. Find its efficiency.","o":["25%","35%","15%","75%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2300 J of energy and delivers 1150 J as useful output. Find its efficiency.","o":["60%","25%","50%","40%"],"a":2,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 2800 J of energy and delivers 1400 J as useful output. Find its efficiency.","o":["50%","25%","60%","40%"],"a":0,"t":"Work, Energy and Power","d":"Easy"},{"q":"A machine receives 3500 J of energy and delivers 1400 J as useful output. Find its efficiency.","o":["30%","40%","60%","50%"],"a":1,"t":"Work, Energy and Power","d":"Easy"},{"q":"In a lever system the load is 70 N and the effort is 30 N. Calculate the mechanical advantage.","o":["2.33","0.43","52.5","3.33"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 100 N and the effort is 50 N. Calculate the mechanical advantage.","o":["125","0.5","2","3"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 70 N and the effort is 60 N. Calculate the mechanical advantage.","o":["1.17","2.17","105","0.86"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 120 N and the effort is 90 N. Calculate the mechanical advantage.","o":["1.33","2.33","0.75","270"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 110 N and the effort is 70 N. Calculate the mechanical advantage.","o":["0.64","192.5","1.57","2.57"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 80 N and the effort is 100 N. Calculate the mechanical advantage.","o":["0.8","1.25","1.8","200"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 40 N and the effort is 70 N. Calculate the mechanical advantage.","o":["1.57","1.75","70","0.57"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 120 N and the effort is 100 N. Calculate the mechanical advantage.","o":["1.2","300","0.83","2.2"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 20 N and the effort is 70 N. Calculate the mechanical advantage.","o":["3.5","0.29","1.29","35"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 90 N and the effort is 100 N. Calculate the mechanical advantage.","o":["1.11","1.9","225","0.9"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 110 N and the effort is 100 N. Calculate the mechanical advantage.","o":["0.91","1.1","2.1","275"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 100 N and the effort is 40 N. Calculate the mechanical advantage.","o":["2.5","100","3.5","0.4"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 20 N and the effort is 60 N. Calculate the mechanical advantage.","o":["3","0.33","1.33","30"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 20 N and the effort is 40 N. Calculate the mechanical advantage.","o":["20","1.5","2","0.5"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 80 N and the effort is 30 N. Calculate the mechanical advantage.","o":["2.67","3.67","60","0.38"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 50 N and the effort is 60 N. Calculate the mechanical advantage.","o":["75","0.83","1.83","1.2"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 20 N and the effort is 80 N. Calculate the mechanical advantage.","o":["4","0.25","1.25","40"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 110 N and the effort is 90 N. Calculate the mechanical advantage.","o":["2.22","1.22","247.5","0.82"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 40 N and the effort is 60 N. Calculate the mechanical advantage.","o":["1.5","1.67","60","0.67"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 120 N and the effort is 10 N. Calculate the mechanical advantage.","o":["12","30","0.08","13"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 110 N and the effort is 60 N. Calculate the mechanical advantage.","o":["0.55","165","1.83","2.83"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 60 N and the effort is 40 N. Calculate the mechanical advantage.","o":["1.5","60","2.5","0.67"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 70 N and the effort is 80 N. Calculate the mechanical advantage.","o":["1.14","0.88","1.88","140"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 40 N and the effort is 30 N. Calculate the mechanical advantage.","o":["30","0.75","2.33","1.33"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 40 N and the effort is 80 N. Calculate the mechanical advantage.","o":["2","1.5","80","0.5"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 50 N and the effort is 90 N. Calculate the mechanical advantage.","o":["0.56","112.5","1.8","1.56"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 90 N and the effort is 20 N. Calculate the mechanical advantage.","o":["5.5","4.5","0.22","45"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 70 N and the effort is 20 N. Calculate the mechanical advantage.","o":["0.29","4.5","3.5","35"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 20 N and the effort is 100 N. Calculate the mechanical advantage.","o":["50","1.2","5","0.2"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 30 N and the effort is 80 N. Calculate the mechanical advantage.","o":["2.67","0.38","60","1.38"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 110 N and the effort is 20 N. Calculate the mechanical advantage.","o":["55","0.18","6.5","5.5"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 70 N and the effort is 90 N. Calculate the mechanical advantage.","o":["1.29","0.78","157.5","1.78"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 50 N and the effort is 80 N. Calculate the mechanical advantage.","o":["100","1.62","1.6","0.62"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 40 N and the effort is 90 N. Calculate the mechanical advantage.","o":["2.25","90","1.44","0.44"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 70 N and the effort is 10 N. Calculate the mechanical advantage.","o":["7","0.14","8","17.5"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 40 N and the effort is 100 N. Calculate the mechanical advantage.","o":["100","2.5","1.4","0.4"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 30 N and the effort is 20 N. Calculate the mechanical advantage.","o":["0.67","2.5","15","1.5"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 90 N and the effort is 70 N. Calculate the mechanical advantage.","o":["2.29","157.5","0.78","1.29"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 30 N and the effort is 70 N. Calculate the mechanical advantage.","o":["0.43","1.43","2.33","52.5"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 30 N and the effort is 10 N. Calculate the mechanical advantage.","o":["0.33","4","7.5","3"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 120 N and the effort is 20 N. Calculate the mechanical advantage.","o":["0.17","6","7","60"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 50 N and the effort is 10 N. Calculate the mechanical advantage.","o":["5","0.2","12.5","6"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 30 N and the effort is 50 N. Calculate the mechanical advantage.","o":["37.5","0.6","1.6","1.67"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 60 N and the effort is 50 N. Calculate the mechanical advantage.","o":["0.83","75","1.2","2.2"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 120 N and the effort is 50 N. Calculate the mechanical advantage.","o":["2.4","150","3.4","0.42"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 20 N and the effort is 90 N. Calculate the mechanical advantage.","o":["4.5","0.22","45","1.22"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 30 N and the effort is 100 N. Calculate the mechanical advantage.","o":["75","1.3","0.3","3.33"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 40 N and the effort is 50 N. Calculate the mechanical advantage.","o":["0.8","50","1.25","1.8"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 80 N and the effort is 20 N. Calculate the mechanical advantage.","o":["4","0.25","40","5"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 100 N and the effort is 20 N. Calculate the mechanical advantage.","o":["0.2","5","6","50"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 30 N and the effort is 40 N. Calculate the mechanical advantage.","o":["1.33","30","1.75","0.75"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 60 N and the effort is 30 N. Calculate the mechanical advantage.","o":["0.5","45","3","2"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 50 N and the effort is 100 N. Calculate the mechanical advantage.","o":["0.5","1.5","125","2"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 20 N and the effort is 30 N. Calculate the mechanical advantage.","o":["1.67","15","0.67","1.5"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 60 N and the effort is 80 N. Calculate the mechanical advantage.","o":["1.75","0.75","120","1.33"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 110 N and the effort is 40 N. Calculate the mechanical advantage.","o":["0.36","2.75","110","3.75"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 30 N and the effort is 90 N. Calculate the mechanical advantage.","o":["1.33","3","67.5","0.33"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 100 N and the effort is 90 N. Calculate the mechanical advantage.","o":["225","0.9","1.11","2.11"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 110 N and the effort is 50 N. Calculate the mechanical advantage.","o":["2.2","0.45","137.5","3.2"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 90 N and the effort is 30 N. Calculate the mechanical advantage.","o":["0.33","3","4","67.5"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 120 N and the effort is 60 N. Calculate the mechanical advantage.","o":["180","3","2","0.5"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 20 N and the effort is 50 N. Calculate the mechanical advantage.","o":["1.4","25","0.4","2.5"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 50 N and the effort is 30 N. Calculate the mechanical advantage.","o":["37.5","0.6","1.67","2.67"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 70 N and the effort is 40 N. Calculate the mechanical advantage.","o":["1.75","0.57","2.75","70"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 60 N and the effort is 70 N. Calculate the mechanical advantage.","o":["1.86","0.86","1.17","105"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 50 N and the effort is 40 N. Calculate the mechanical advantage.","o":["1.25","0.8","50","2.25"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 80 N and the effort is 40 N. Calculate the mechanical advantage.","o":["80","0.5","3","2"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 60 N and the effort is 10 N. Calculate the mechanical advantage.","o":["7","15","6","0.17"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 110 N and the effort is 80 N. Calculate the mechanical advantage.","o":["2.38","220","0.73","1.38"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 90 N and the effort is 60 N. Calculate the mechanical advantage.","o":["0.67","135","2.5","1.5"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 60 N and the effort is 20 N. Calculate the mechanical advantage.","o":["30","4","3","0.33"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 110 N and the effort is 10 N. Calculate the mechanical advantage.","o":["11","12","27.5","0.09"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 100 N and the effort is 30 N. Calculate the mechanical advantage.","o":["0.3","75","4.33","3.33"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 100 N and the effort is 10 N. Calculate the mechanical advantage.","o":["10","11","25","0.1"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 80 N and the effort is 90 N. Calculate the mechanical advantage.","o":["1.12","0.89","1.89","180"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 70 N and the effort is 50 N. Calculate the mechanical advantage.","o":["2.4","1.4","0.71","87.5"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 100 N and the effort is 60 N. Calculate the mechanical advantage.","o":["150","2.67","0.6","1.67"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 40 N and the effort is 10 N. Calculate the mechanical advantage.","o":["10","5","0.25","4"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 90 N and the effort is 10 N. Calculate the mechanical advantage.","o":["9","10","22.5","0.11"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 120 N and the effort is 70 N. Calculate the mechanical advantage.","o":["210","0.58","1.71","2.71"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 50 N and the effort is 70 N. Calculate the mechanical advantage.","o":["87.5","1.4","0.71","1.71"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 90 N and the effort is 40 N. Calculate the mechanical advantage.","o":["3.25","2.25","90","0.44"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 90 N and the effort is 80 N. Calculate the mechanical advantage.","o":["180","1.12","2.12","0.89"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 80 N and the effort is 70 N. Calculate the mechanical advantage.","o":["140","2.14","0.88","1.14"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 30 N and the effort is 60 N. Calculate the mechanical advantage.","o":["0.5","45","2","1.5"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 100 N and the effort is 70 N. Calculate the mechanical advantage.","o":["1.43","0.7","2.43","175"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 120 N and the effort is 40 N. Calculate the mechanical advantage.","o":["0.33","3","120","4"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 110 N and the effort is 30 N. Calculate the mechanical advantage.","o":["3.67","0.27","82.5","4.67"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 40 N and the effort is 20 N. Calculate the mechanical advantage.","o":["2","0.5","3","20"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 50 N and the effort is 20 N. Calculate the mechanical advantage.","o":["2.5","0.4","25","3.5"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 80 N and the effort is 10 N. Calculate the mechanical advantage.","o":["9","20","0.12","8"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 90 N and the effort is 50 N. Calculate the mechanical advantage.","o":["1.8","112.5","2.8","0.56"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 60 N and the effort is 100 N. Calculate the mechanical advantage.","o":["1.67","0.6","150","1.6"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 100 N and the effort is 80 N. Calculate the mechanical advantage.","o":["200","2.25","0.8","1.25"],"a":3,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 80 N and the effort is 60 N. Calculate the mechanical advantage.","o":["0.75","120","1.33","2.33"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 20 N and the effort is 10 N. Calculate the mechanical advantage.","o":["2","0.5","3","5"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 60 N and the effort is 90 N. Calculate the mechanical advantage.","o":["1.67","0.67","135","1.5"],"a":1,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 70 N and the effort is 100 N. Calculate the mechanical advantage.","o":["175","1.43","0.7","1.7"],"a":2,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 120 N and the effort is 30 N. Calculate the mechanical advantage.","o":["4","5","90","0.25"],"a":0,"t":"Simple Machines","d":"Medium"},{"q":"In a lever system the load is 80 N and the effort is 50 N. Calculate the mechanical advantage.","o":["100","1.6","0.62","2.6"],"a":1,"t":"Simple Machines","d":"Medium"}]}