Two charges of +4x10-SC and -4x10-5C are placed 1 meter apart. Using Coulomb's law, the force between them is 14.4 N. If the distance between the two charges is doubled to 2 m, what happens to the force

Two charges of +4x10-SC and -4x10-5C are placed 1 meter apart. Using Coulomb's law, the force between them is 14.4 N.

If the distance between the two charges is doubled to 2 m, what happens to the force between the two charges?

A. the force is reduced by one-half to 7.2 N
B. the force increases four times to 57.6 N
C. the force remains the same
D. the force is reduced by one quarter to 3.6

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