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1) The international space station has a mass of 411000 kg, an average speed of 2.73...

1) The international space station has a mass of 411000 kg, an average speed of 2.73 x 10^4 km/h, and an average height above the Earths surface of 361 km.

What is the average gravitational potential energy of the ISS?
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2) There is a point on the line connecting the earth and the moon where the net gravitational force on an object is zero. What is the distance from the center of the moon to this point?
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