Answer in order to be available all the time, a communications satellite must orbit in a circle above the equator and must remain above the same point on the earth's surface. how long does it take for a communications satellite to make one complete orbit around the earth? re = 6.38 × 106 m, me = 5.97 × 1024 kg, and g = 6.674 × 10−11 nm2/kg2.
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