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The surface area of an unclothed person is 1.55 m2, and his skin temperature is 33.0°C. The person is located in a dark room with a temperature of 17.0°C, and the emissivity of the skin is e = 0.95. (Use ? = 5.6696 10-8 W/m2 · K4 for the Stefan-Boltzmann constant.)
(a) At what rate is energy radiated by the body?
W
(b) What is the significance of the sign of your answer?
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