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The Moon is seen to keep one face toward Earth at all times. If viewed from a point directly above the plane of the planetary system, how does it have to rotate to maintain this alignment?

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ProfLincoln

Answer:

It must rotate once in approximately 27 days (once per month), or once per orbit around the Earth

Explanation:

The moon has only one of its sides facing the earth always. To keep up with this, it must travel round the earth in an orbit that takes approximately 27days

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