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Two satellites P and Q are moving in different circular orbits around the Earth (radius R). The heights of P and Q from the Earth surface are h P and h Q , respectively, where h P = R/3. The accelerations of P and Q due to Earth’s gravity are g P and g Q , respectively. If g P /g Q = 36/25, what is the value of h Q ?

1. 3R/5
2. R/6
3. 6R/5
4. 5R/6

Correct answer: 3R/5

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