The mass of a certain planet is 300 multiplygif 1026 kga, Ask an Expert

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The mass of a certain planet is 3.00 multiply.gif 1026 kg.

(a) The planet has a moon whose mean orbital radius is 2.80 multiply.gif 108 m. What is the period of this moon?

(b) The planet has a second moon whose period is 2.45 multiply.gif 106 s. What is the mean orbital radius of this second moon?

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