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Escape Velocity

If a planet has a mass of 9.42 x 1024 kg and a radius of 5.47 x 106 meters, to the nearest m/s what is its escape velocity?

If the mass is increased by a factor of 2, what is the new escape velocity?

If the radius is decreased by a factor of 0.22, what is its new escape velocity?

(See attached file for full problem description)

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Calculation of escape velocity when the mass is doubled and the radius is halved

$2.19