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For a satellite to orbit around the eart...

For a satellite to orbit around the earth, which of the following must be true?

A

It must be above the equator at some time

B

It cannot pass over the poles at any time

C

Its height above the surface cannot exceed `36000km`

D

Its period of rotation must be ` gt 2pi sqrt(R//g)`.

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The correct Answer is:
A, D
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