This can be mathematically represented as:
\[ F = k \frac{|q_1 \cdot q_2|}{r^2} \]
where:
- \( F \) is the magnitude of the force between the charges,
- \( k \) is the Coulomb's constant,
- \( q_1 \) and \( q_2 \) are the charges,
- \( r \) is the distance
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