Question

The temperature of a perfect black body is 727 and its area is 0.1 its stefans constant is 5.67 then heat

Answer 1

The rate of heat flow is 5670 W.

Explanation:

Given that,

Temperature = 727°C

Area = 0.1 m²

Stefan constant $\sigma= 5.67\times10^{-8}\ W/m^2K^4$

Suppose we need to calculate the rate of heat flow through the body

We need to calculate the rate of heat flow

Using formula of the rate of heat flow

$\dfrac{dQ}{dt}=\sigma\times AT^4$

Put the value into the formula

$\dfrac{dQ}{dt}=5.67\times10^{-8}\times0.1\times(727+273)^4$

$\dfrac{dQ}{dt}=5670\ W$

Hence, The rate of heat flow is 5670 W.

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Topic : Stefan constant

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