In this problem you will consider the balance of thermal energy radiated and absorbed by a person. Assume that the person is wearing only a skimpy bathing suit of negligible area. As a rough approximation, the area of a human body may be considered to be that of the sides of a cylinder of length L=2.0 m and circumference C= 0.8 m. For the Stefan-Boltzmann constant use 5.67*10^-8 W/m^2/K^4 . A) If the surface temperature of the skin is taken to be Tbody= 30 degrees C, how much thermal power Prb does the body described in the introduction radiate? Take the emissivity to be e=0.6 . Express the power radiated into the room by the body numerically, rounded to the nearest 10 W. B) Find Pnet, the net power radiated by the person when in a room with temperature Troom=20degrees C . Express the net radiated power numerically, to the nearest 10 W.
