Question

1). a). An asteroid is discovered in a nearly circular orbit around the Sun, with an...

1).

a). An asteroid is discovered in a nearly circular orbit around the Sun, with an orbital radius that is 2.83 times Earth's. What is the asteroid's orbital period ?, its "year," in terms of Earth years?

b). An artificial satellite is in a circular orbit ?=390.0 km above the surface of a planet of radius ?=3.65×103 km. The period of revolution of the satellite around the planet is ?=3.15 hours. What is the average density of the planet?

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