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Physics, 26.10.2019 04:43 loishsu4936

An astronaut, whose mission is to go where no one has gone before, lands on a spherical planet in a distant galaxy.
as she stands on the surface of the planet, she releases a small rock from rest and finds that it takes the rock 0.420 s to fall 1.90 m.
a) if the radius of the planet is 7.40ร—107 m,
b) what is the mass of the planet?

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