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Assume this cow is a sphere of uniform density. The sphere has a volume of 0.75...

Assume this cow is a sphere of uniform density. The sphere has a volume of 0.75 m3. If this cow has a body temperature of 312K, the ambient temperature is 295K, and the cow's emissivity is 0.85, how much power is it radiating? (The Stefan - Boltzmann constant is 5.67x10-8 W/m2•K4)

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Answer #1

We know By Stefan-Boltzmann law The thermal energy radiated by a body per second per unit area is proportional to the fourth power of the absolute temperature and is given by

where e is the emissivity of the object. And the hot object is radiating energy to its cooler surroundings at temperature Tc.

putting the given values in the formula above stated:

solving for P we will get:

P=366.76 Watt

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