Two small charged spheres are located 5.0cm apart. One sphere is charged to +25.00 nC, the other to -15.00 nC. A proton (mass mp= 1.67*10-27 kg) is released from rest halfway between the spheres. What is the proton's speed after it has moved 1.0cm?

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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.