Evaporation of water from our skin is a very important mechanism for controlling body temperature. In...
Evaporation of water from our skin is a very important mechanism for controlling body temperature.
In a 4.5-h intense cycling race, a cyclist can loses 9.5 kg of water through perspiration. Estimate how much heat the cyclist loses in the process.
Homework Answers
considering normal body temperature to be 37 deg C .
first energy needed to raise temperature to 100 deg C.
Q1 = m c deltT = 9.5 x 4186 x (100 - 37) = 2505321 J
energy needed to evaporation ,
Q2 = mL = 9.5 x 2256 x 10^3 = 21432000 J
total heat lost = Q1 + Q2 = 23927321 J
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Evaporation of water from our skin is a very important mechanism
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