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5. A satellite of mass 2000 kg is in a circular orbit about the Earth. It is at a height of
1.4 x 107 m above the Earth's surface. The Earth's radius and mass are 6378 km and
5.97 x 1024 kg, respectively.
(a) Calculate the magnitude of the gravitational force of the Earth on the satellite.
(b) How fast is the satellite travelling?
(c) Determine how many orbits the satellite makes around the Earth per day.

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