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Velocity of Neptune

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Neptune orbits around the sun in a nearly circular motion. Neptune's mass is 1.10 x 10^26N. The radius between Neptune and the sun is 4.5 x 10^12m.The force of gravitational attraction between the two planets is 6.8 x 10^20N.

Determine:
A) The velocity of Neptune
B)The period in years

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This solution determines the velocity of Neptune and this period in years.

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Any object with mass M in circular orbit of radius r traveling with a speed v ...

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