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On the planet Mars, the power per unit area in sunlight is F = 590Wm-2 ....

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Electrical Engineering

On the planet Mars, the power per unit area in sunlight is F =590Wm-2 . Mars’s emissivity for infrared radiation is =0.93. If the surface temperature on Mars is -60 C, what fraction(to within a few percent) of the sunlight shining on Mars getsabsorbed? (a) less than 1% (b) 75% (c) 20% (d) 30%

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