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slt8925
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A flywheel is a solid disk that rotates about an axis tha is perpendicular to the disk at it's center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered possible alternative to batteries in electric cars. The gasoline burned in a 300-mile trip in a typical midsize car produces about 1.2x10^9 J of energy. How fast would a 13 kg flywheel with a radius of .30m have to rotate to store this much energy. Give your answer in rev/m