I'm lost on this one.... Can someone provide an answer? (detailed please)(adsbygoogle = window.adsbygoogle || []).push({});

Assume planet X9 is a spherical planet with a diameter of 1600 km with a uniform density of 5200 kilograms per cubic metre. If its only satellite is in a circular orbit 630 km above the surface of X9, what is its orbital velocity in metres per second? Please round up to the nearest whole number.

Thanks in advance :)

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# Homework Help: A little help please?

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