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The Hubble Space Telescope orbits the Earth at an altitude of approximately 612 km. Its mass is 11,100 kg and the mass of the Earth is 5.97Ã?1024 kg. The Earth's radius is 6.38Ã?106 m. Assume the Hubble's orbit is circular.

(a) What is the gravitational potential energy of the Earth-Hubble system? (Assume that it is zero when their separation is infinite.)

(b) What is the Hubble's KE?

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