1. A metal sphere is given a charge of -3.0 µC and second sphere a charge of 2.0 µC. The spheres are separated by a distance of 0.10m. What is the force between them? 2. What is the distance of the two objects if the charges are 2.43 µC and 4.12 µC and the force is 12 N? 3. What must be the distance between point charge q = 2.6 µC and point charge q2 = 4.7 µC for the electrostatic force between them to have a magnitude of 5.70 N? 4. A point charge of 3.00 µC is 12.0 cm distant from a second point charge of -1.50 µC. Calculate the magnitude of force.

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