Homework Statement
At what rate does a 0.1m cube of metal with emissivity e=0.75 radiate energy if it is at a temperature of 200C?
Homework Equations
H=AeσT^4, σ=5.67 x10^-8
The Attempt at a Solution
I found the area of the cute to be A=(0.1m)^2=0.01m, and the turned 200C into 473K, but when...