We can use Coulomb's Law to find the electric force between two charges:
$$F = k \frac{|q1 \cdot q2|}{r^2}$$
where F is the electric force, k is Coulomb's constant ($8.99 \times 10^9 Nm^2/C^2$), q1 and q2 are the charges, and r is the distance between the
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