An electron is at rest just above the surfaceof a sphere with a radius of 2.7 mm and a uniformly distributedpositive charge of 1.8 * 10-15 C. Like a rocket blasting off fromthe Earth, the electron is given an initial speed ve radially outwardfrom the sphere. If the electron coasts to infinity, where its kineticenergy drops to zero, what is the escape speed, ve?

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.