An electron is shot directly toward the center of a large metal plate that has surface charge density -2.0* 10-6 C/m2. If the initial kinetic energy of the electron is 1.60 *10-17 J and if the electron is to stop (due to electrostatic repulsion from the plate) just as it reaches the plate, how far from the plate must the launch point be?

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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.