Question

Use the equation for the rate of the net heat exchange by radiation to show that...

Use the equation for the rate of the net heat exchange by radiation to show that if the surrounding temperature is not too different than the temperature of the object then the

object will radiate heat according to Newton's law of cooling. That is, show that the rate of heat loss is proportional to the change in temperature between the object and its

environment.

[Hint: If the temperature of the object, T1, is approximately equal to the temperature of the surrounding, T2, then T2-T1 can be replaced by T1]

Qnet/t =σeA(T24 - T14)

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