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Q. Two point charges each have a value of 30.0mC and are separated by a distance of 4.00cm. What is the electric field midway between two charges?

Q. A high-speed flywheel in a motor is spinning at 450rpm when a power failure suddenly occurs. The flywheel has mass 37.0kg and diameter 71.0cm. The power is off for 27.0s and during this time the flywheel slows due to friction in its axle bearings. During the time the power is off, the flywheel makes 150 complete revolutions.

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