(Solved): A person is standing outdoors in the shade where the temperature is 17C. (a) What is the radiant ...

A person is standing outdoors in the shade where the temperature is $17^{\circ }\mathrm{C}$. (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 flat) is $160{\mathrm{cm}}^2$ and its emissivity is 0.87 . (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 0.66 ? (a) Number Units (b) Number Units