Assume That the Sun Is a Sphere of Radius 6

question 33

Multiple Choice

Assume that the sun is a sphere of radius 6.96 × 10⁸ m and that its surface temperature is 5.8 × 10³ K.If the sun radiates at a rate of 3.90 × 10²⁶ W and is a perfect emitter,at what rate is energy emitted per square meter at the sun's surface?

• A)5.6 × 10⁷ W/m²
• B)6.4 × 10⁷ W/m²
• C)5.6 × 10¹⁷ W/m²
• D)12.8 × 10⁷ W/m²
• E)25.6 × 10⁷ W/m²