Extremadura PAU Physics Practice Questions - Extremadura PAU Physics (Física) Exam

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A satellite of mass m = 1000 kg orbits Earth in a circular path at distance r = 4 * RE from Earth's center. Given Earth's surface gravity g0 = 9.80 m/s^2 and RE = 6.37 x 10^6 m, what is the satellite's circular orbital speed?

7.90 km/s 5.59 km/s 3.95 km/s 11.2 km/s

Correct Answer:

3.95 km/s

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