1.Two charged particles are a distance of 1.62 m from each other. One of the particles has a charge of 6.82 nC, and the other has a charge of 3.82 nC.(a)What is the magnitude (in N) of the electric force that one particle exerts on the other?

2. A 7.87-nC charge is located 1.72 m from a 3.86-nC point charge. (a) Find the magnitude of the electrostatic force that one charge exerts on the other.

3. A charged particle A exerts a force of 2.39 N to the right on charged particle B when the particles are 13.2 mm apart. Particle B moves straight away from A to make the distance between them 16.8 mm. What vector force does particle B then exert on A?