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Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

Which subatomic particle has a negative charge

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples