Coulomb's Law: As shown in the figure, the charge Q is midway between two other charges. If Q = -7.5 nC, what must be the charge q1 so that charge q2 remains stationary as Q and q1 are held in place?
A. 30 nC
B. 15 nC
C. 7.5 nC
D. 60 nC
Answer: A
Physics & Space Science
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