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For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is:

1. 1/2
2. 1/√2
3. 2
4. √2

Correct answer: 1/2

Solution

For a satellite in a stable circular orbit, the total energy is the sum of kinetic energy (K) and potential energy (U), where total energy is -K. Thus, K = -U/2, and the ratio K/U = 1/2.

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