A person is standing outdoors in the shade where the
Chapter , Problem 23(choose chapter or problem)
A person is standing outdoors in the shade where the temperature is 28 8C. (a) What is the radiant energy absorbed per second by his head when it is covered with hair? The surface area of the hair (assumed to be fl at) is 160 cm2 and its emissivity is 0.85. (b) What would be the radiant energy absorbed per second by the same person if he were bald and the emissivity of his head were 0.65?
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