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A man of 60 kg gains 1000 cal of heat byeating 5 mangoes. His efficiency is 28%. Towhat height he can jump by using this energy?1)2m 2) 20 m 3) 28 m 4)0.2 m |
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Answer» mass,m=60kgenergygained=1000calweknowthat,1cal=4.2J1000cal=4200JSo,energygained=4200JEfficiency=28%Energyoutput=mgh=28%of4200J28/100×4200=60×9.8×hh=28×42/60×9.8h=2 m |
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