Homework Help: Physics

Posted by Mitch on Sunday, April 6, 2008 at 10:44pm.

A person eats a container of yogurt. The Nutritional Facts label states that it contains 195 Calories (1 Calorie = 4186 J). What mass of perspiration would one have to lose to get rid of this energy? At body temperature, the latent heat of vaporizaiton of water is 2.42 106 J/kg.

Physics - drwls, Monday, April 7, 2008 at 2:25am
Divide the heat content of the food (195x4186 = 816,300 J)
by the latent heat of vaporization 2.42*10^6 J/kg

The answer will be in kg.

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