Period of a satellite!

  1. What is the period of a satellite circling the Moon at a height of 90km above the Moon's surface?

    Can someone get me started please?
     
  2. jcsd
  3. wow thanx, i missed that thread XD
     
  4. i had most of it but was forgetting to add the R of the moon to the distance of the sat above the moon >.<.
     
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