Physics

Problem

A square metal plate that is

0.50\,\text{m}

on each side is maintained at

800\,\text{K}

for

60\,\text{s}

. Treating the plate as an ideal blackbody, calculate the total energy it emits during this time. Use

\sigma = 5.67 \times 10^{-8}\,\text{W}\,\text{m}^{-2}\,\text{K}^{-4}