Question

The radius of the earth's orbit around the sun (assumed to be circular) is 1.50×108km, and...

The radius of the earth's orbit around the sun (assumed to be circular) is 1.50×108km, and the earth travels around this orbit in 365 days.

Part A

What is the magnitude of the orbital velocity of the earth in m/s?
Express your answer in meters per second

Part B

What is the radial acceleration of the earth toward the sun?
Express your answer in meters per second squared.

Part C

What is the magnitude of the orbital velocity of the planet Mercury (orbit radius =5.79×107km, orbital period = 88.0 days)?
Express your answer in meters per second.

Part D

What is the radial acceleration of the Mercury?
Express your answer in meters per second squared.
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