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Jet001 [13]
3 years ago
10

The intensity of sunlight at the earth surface is about 1000wlm2. The average temperature of the earth is about 58°

Physics
1 answer:
Nadya [2.5K]3 years ago
8 0

The emissivity of the earth is 0.5

The emissivity of the earth is calculated by the Stefan's law

q= sigma a curlyepsilon T^(4)1000=5.67*10^(-8)*4 pi *(6400*10^(3))^(2)* curlyepsilon *288^(4) curlyepsilon =0.5

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