A small satellite is in orbit around the Earth at a height of 1000 km above the surface. It has a ass of 100 kg, a radius of 1 m, an absorptivity of 0.9 for IR radiation and 0.5 for visible adiation. ) What solid angle does the Earth subtend when viewed from the satellite? ) Calculate the radiative equilibrium temperature of the satellite when it is in the shadow of the arth. What is the radiative equilibrium temperature of the satellite at the moment when it passes ompletely out of the shadow of the Earth? (Note that at this time the Earth is still completely

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Blackbody

Q.5 A blackbody radiates how much energy when the temperature of the body is elevated?