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A satellite is in circular orbit at an altitude of 1500 km above the surface of...

A satellite is in circular orbit at an altitude of 1500 km above the surface of a nonrotating planet with an orbital speed of 3.4 km/s. The minimum speed needed to escape from the surface of the planet is 8 km/s, and G = 6.67 × 10-11 N · m2/kg2. The orbital period of the satellite is closest to

A)59 min.
B)45 min.
C)72 min.
D)65 min.
E)52 min.
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