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=2.0mL=2.0m and circumference C=0.8mC=0.8m. For the Stefan-Boltzmann constant use σ=5.67×10−8W/m2/K4σ=5.67×10−8W/m2/K4. If the surface temperature of the skin is taken to be Tbody=30∘CTbody=30∘C, how much thermal power PrbPrbP_rb does the body described in the introduction radiate? Take the emissivity to be e=0.6e=0.6.
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=2.0mL=2.0m and circumference C=0.8mC=0.8m. For the Stefan-Boltzmann constant use σ=5.67×10−8W/m2/K4σ=5.67×10−8W/m2/K4. If the surface temperature of the skin is taken to be Tbody=30∘CTbody=30∘C, how much thermal power PrbPrbP_rb does the body described in the introduction radiate? Take the emissivity to be e=0.6e=0.6.
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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=2.0mL=2.0m and circumference C=0.8mC=0.8m.
For the Stefan-Boltzmann constant use σ=5.67×10−8W/m2/K4σ=5.67×10−8W/m2/K4.
If the surface temperature of the skin is taken to be Tbody=30∘CTbody=30∘C, how much thermal power PrbPrbP_rb does the body described in the introduction radiate?
Take the emissivity to be e=0.6e=0.6.
Express the power radiated into the room by the body numerically, rounded to the nearest 10 W.
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