A sphere of surface area 1.25 m2 and emissivity 1.0 is at a temperature of 10

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A sphere of surface area 1.25 m2 and emissivity 1.0 is at a temperature of 10

A sphere of surface area 1.25 m2 and emissivity 1.0 is at a temperature of 100.0°C. The rate at which it radiates heat into empty space is closest to
A)

7.1 W
B)

0.71 mW
C)

1.4 kW
D)

9.9 mW
E)

3.7 W

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