Two small objects each with a net charge of +Q exert a force of magnitude F on each other. We replace one of the objects with another whose net charge is + 4Q. We move the +Q and +4Q charges to be 3 times as far apart as they were. What is the magnitude of the force on the +4Q charge ?
A. F
B. 4F
C. 4F/3
D. 4F/9
E. F/3
Answers: 2
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