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A. At what altitude above the Earth's surface would a satellite have to be for it’s...

A. At what altitude above the Earth's surface would a satellite have to be for it’s orbital period to be equal to 24 hours? Assume the satellite is in a circular orbit. Assume a spherical, uniform density for the Earth. The Earth's mass 5.98 x 10 raised to 24kg. The Earth's radius is 6380 km B. Why would a satellite in such an orbit be a useful thing?

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