Problem on magnitude of the force of repulsion
How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10^-21 newtons and the distance between two small spheres of equal charge is 0.2 meters?
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On New York's Verrazano Narrows bridge, traffic accidents occur as a mean rate of 1.0 crash per day. Let X be the number of crashes in a given day. What is the probability of at least one crash per week?
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