Circular velocity: Determine mass of the planet and its orbital radius.
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You detect a star that appears to be moving in a circle with a velocity of 20m/s and a period of 70 days. It is assumed this motion is due to the gravitational force by a planet orbiting the star. The mass of the star is 2*10^30kg. Determine the mass of the planet and its orbital radius.
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The solution is very clear with good explanations for determining the mass of the planet and its orbital radius.
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