Answer:
783.63 Watt
Explanation:
T = 111 degree C = 111 + 273 = 384 K
T0 = 45 degree C = 45 + 273 = 318 K
A = 1.6 m^2
e = 0.75
According to the Stefan's law, the energy radiated per second is given by
[tex]E = \sigma eA\left ( T^{4}- T_{0}^{4}\right )[/tex]
[tex]E = 5.67\times 10^{-8}\times 0.75\times 1.6 ( 384^{4}- 318^{4}\right ))[/tex]
E = 783.63 Watt
