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Assume that the orbit of the earth around the sun is circular.The distance from the earth to the sun is 1.5x10^11 m. The massesof the earth and the sun are Me= 5.98x10^24kg and Ms=1.99x10^30kg.
a) Find the orbital speed of the earth
b) The period of the earth and then express it in years.
c) Find the gravitational force between the earth and the sun.
a piece of cheese with a mass of 1.22kg is placed on a vertical spring of negligible mass and a force constant k 1500nm
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A 3.0x10 ² kg piano is being lifted at a steady speed from ground level straight up to an apartment 10 m above the ground. How much time does it take to lift the piano
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