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A 15.0 kg satellite has a circular orbit with a period of 2.70 h and a...

A 15.0 kg satellite has a circular orbit with a period of 2.70 h and a radius of 7.50 × 106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 5.00 m/s2, what is the radius of the planet?

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