A metal sphere of surface area is heated to

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Modern Physics · Modern Physics

Problem

A metal sphere of surface area

0.20\,\text{m}^2

is heated to

800\,\text{K}

. If its surface emissivity is

0.60

, calculate the total power it radiates. \;(Take

\sigma = 5.67\times10^{-8}\,\text{W m}^{-2}\text{K}^{-4}