As a rough approximation, the human body may be considered to be a cylinder of length l=2.0m and circumference c=0.8m. (to simplify things, ignore the circular top and bottom of the cylinder, and just consider the cylindrical sides.) if the emissivity of skin is taken to be e=0.6, and the surface temperature is taken to be t = 30 ∘ c, how much thermal power p does the human body radiate?

Question

Carl Spence

Physics

7 May, 07:08

As a rough approximation, the human body may be considered to be a cylinder of length l=2.0m and circumference c=0.8m. (to simplify things, ignore the circular top and bottom of the cylinder, and just consider the cylindrical sides.) if the emissivity of skin is taken to be e=0.6, and the surface temperature is taken to be t = 30 ∘ c, how much thermal power p does the human body radiate?

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Answers (1)

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Keira Burns · Answer 1

E = 0.6

Constant sigma is 5.6704004 * 10∧ (-8)

The area is LC = 2*.8 = 1.6m∧2

to convert degrees celcious to Kelvin = 303K

The equation is

P = e? AT∧4.

Then the answer is 460 watts.