Multiple Choice
A sphere of surface area 1.25 m2 and emissivity 1.0 is at a temperature of 100°C.At what rate does it radiate energy into empty space? (σ = 5.67 × 10-8 W/m2 ∙ K4)
A) 7.1 W
B) 0.71 mW
C) 1.4 kW
D) 9.9 mW
E) 3.7 W
Correct Answer:
Verified
Correct Answer:
Verified
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