•A student eats a piece of cake (400 Cal), •The exercise requires the body do wo

Question

•A student eats a piece of cake (400 Cal), •The exercise requires the body do work at an averagerate of 200watt.

How long must the student exercise to work out the cake’senergy? Please give step by step instructions with solution for MAXpoints. •A student eats a piece of cake (400 Cal), •The exercise requires the body do work at an averagerate of 200watt.

How long must the student exercise to work out the cake’senergy? Please give step by step instructions with solution for MAXpoints. Please give step by step instructions with solution for MAXpoints.

Explanation / Answer

energy E = 400 food cal = 400 * 1000 cal                                       = 400 * 1000 *4.186 J                                        =1674.4 * 1000J average rate P = 200 W time t = E / P           = 8.372* 1000 s           =2.32 h

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