You have no doubt noticed that you usually shiver when you get out of the shower

Question

You have no doubt noticed that you usually shiver when you get out of the shower. Shivering is the body's way of generating heat to restore its internal temperature to the normal 37.0^circ C, and it produces approximately 289{ m W} of heat power per square meter of body area. A 69.0{ m kg} (152{ m lb} ), 1.78{ m m} (5.00 foot, 10.0 inch ) person has approximately 1.90m^2 of surface area. Part A How long would this person have to shiver to raise his or her body temperature by 1.10^ C , assuming that none of this heat is lost by the body? The specific heat capacity of the body is about 3500 { m J/(kg cdot K)}.

Explanation / Answer

amount of heat required = 3500 x 1.1 x 69 = 265650 J let the man shiver for t sec heat generated = 289 x 1.9 x t therefore t = 265650 / (289 x 1.9) = 483.8 sec = about 8 min

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