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A bread gives 5 kcal of energy to a boy. How much height he can climbs by using this energy, if his efficiency is 28% and mass is 60
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Mar 19, 2022
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A bread gives 5 kcal of energy to a boy. How much height he can climbs by using this energy, if his efficiency is 28% and mass is 60 kg?
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(a) 15m (b) 5m (c) 2.5 m (d) 10 m
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