In most power plants is boiled to produce steam that turns the turbine. the is heated by burning a fuel in a gas-fired plants or is heated from the of in nuclear plants. the spins a generator to produce electricity.

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Determine the time it takes for a satellite to orbit the earth in a circular "near-earth" orbit. the definition of "near-earth" orbit is one which is at a height above the surface of the earth which is small compared to the radius of the earth, so that you may take the acceleration due to gravity as essentially the same as that on the surface. does your result depend on the mass of the satellite?