Calculate the rate of energy output of the sun, taking the sun as a blackbody

[ninaw21]

1. The surface temperature of the sun is approximately 5800K. Given that the radius of the sun is 6.96x10⁸m calculate the rate of energy output of the sun, taking the sun as a blackbody.

2. H = εσAT⁴



3. Surface temp = 5800K, Radius of the sun = 6.96x10⁸, Emissivity of a blackbody = 1
H = εσAT⁴
H/A = (1)(6.96x10⁸)(5800)⁴
= 7.87x10²³W/M²

Am I right??

 

[lewando]

No. Question is asking for "the rate of energy output" which is power (watts). You also seem to be confusing radius with σ, Stephan's constant.