Solved: In exercising, a weight lifter loses 0.150 kg of
Chapter 15, Problem 15.65(choose chapter or problem)
In exercising, a weight lifter loses 0.150 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifters body. The work done in lifting weights is 1.40 105 J. (a) Assuming that the latent heat of vaporization of perspiration is 2.42 106 J/kg, find the change in the internal energy of the weight lifter. (b) Determine the minimum number of nutritional Calories of food (1 nutritional Calorie 4186 J) that must be consumed to replace the loss of internal energy.
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