How many excess electrons present on each sphere

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Q. A bicycle and rider have a combined mass of 100.0 kg. How many calries of heat are generated in the brakes when the bicycle comes to a stop from a speed of 36.0 km/h?

Q. How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is newtons?

Reference no: EM1347063

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