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An undiscovered planet, many light-years from Earth, has one moon, which has a nearly circular periodic...

An undiscovered planet, many light-years from Earth, has one moon, which has a nearly circular periodic orbit. If the distance from the center of the moon to the surface of the planet is 2.090×10^5 km and the planet has a radius of 3.600×10^3 km and a mass of 7.00×10^22 kg , how long (in days) does it take the moon to make one revolution around the planet? The gravitational constant is 6.67×10^−11N·m^2/kg^2.

T=___________days

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