Step 1:** Calculate the magnitude of the electrostatic force using the formula:
\[ F = \frac{k \cdot |q_1 \cdot q_2|}{r^2} \]
where:
- \( k = 9 \times 10^9 \, Nm^2/C^2 \) (Coulomb's constant)
- \( q_1 = 3 \times 10^{-9} \, C \) (charge of the first point-like
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