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Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Assume the orbit to be circular and 440 km above the surface of the Moon, where the acceleration due to gravity is 1.07 m/s2. The radius of the Moon is 1.70 106 m.

(a) Determine the astronaut's orbital speed.

____m/s

(b) Determine the period of the orbit.

_____ s

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