We have two particles, one with charge \(q\) and the other with charge \(-2q\), at a distance \(r\) apart. According to Coulomb's law, the force between two charges is given by \(F = k \frac{|q_1 q_2|}{r^2}\), where \(k\) is Coulomb's constant, \(q_1\) and \(q_2\)
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