Two point charges \( +4 \, \mu\text{C} \) and \( -2 \, \mu\text{C} \) are separated by a distance of 0.3 m in air. What is the magnitude of the electrostatic force between them?
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When applying Coulomb’s law, use the absolute values of the charges to find the magnitude of the force. Ensure all units are in SI (Coulombs for charge, meters for distance) to avoid errors in calculation.