PROBLEM The electron and proton of a hydrogen atom are separated (on the average) by a distance of about 5.3 X 10 m. (a) Find the magnitudes of the electric force and the gravitational force that each particle exerts on the other, and the ratio of the electric force F, to the gravitational force F (b) Compute the acceleration caused by the elec- tric force of the proton on the electron. Repeat for the gravitational acceleration.

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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.