7. Two moons are a distance 2r from each other. One moon has mass 2m, and the other moon has mass 4m. What is the gravitational potential energy of the two-moon system? 4Gm? a. 4Gm? b. 8Gm? C. 2Gm d.

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Q: 1 z 10 3 3 2 4 6,

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A: formula: