The surface area of an unclothed person is 155 m2 and his


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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Physics: The surface area of an unclothed person is 155 m2 and his
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