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July 24, 2014

Homework Help: physics

Posted by paul smith on Sunday, July 10, 2011 at 9:07am.

Using the inverse-square gravitational law, calculate the work required to lift a 1000-kg satellite from the earth's surface to an altitude of 100 mi and inject it into orbit at 17,500 mph. How long would a 300-hp engine have to be run to produce this much energy

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