Answer questions on Coulomb's law cotton thread 2Q А B Figure 4 Diagram for Question 3 e the meaning of the following words or terms: electrostatics, neutral, by charged, negatively charged, coulomb, microcoulomb, nanocoulomb, senution of charge, quantisation of charge. State Coulomb's law, Figure 4 shows two polystyrene spheres, A and B. They hang on threads of cotton (an insulator). Each sphere is covered with graphite which is a conductor of electricity. u is the electrostatic force on the spheres attraction or repulsion? 22 The magnitude of the charge on A is twice that of the charge on B. If the magnitude of the force on A is 4 x 10-'N, what is the magnitude and direction of the force on B? 23 Name the law of physics that supports your answer to Question 3.2. 14 If the distance between the spheres is halved, state and explain what the magnitude of the electrostatic force will be. 35 If the charges are at their original positions and the magnitude of one of the charges is halved, what will the new magnitude of the electrostatic force be? 3,6 The two spheres are allowed to touch and they immediately push apart. Explain why this happens