A. What type of charging occurs in each of the following scenarios:(3 marks)

1. A rubber rod is rubbed with a piece of fur.
2. The rubber rod is then brought close to a tiny metal ball, which hangs from a non-conducting string. Initially the ball is attracted to the rod.
3. Immediately after touching the rod, the tiny ball is repelled away.

B. Three charged objects are arranged in the shape of a right-angle triangle. The charge on object A is +3.60 x 10^-6C. The charge on Object B is +2.40 x 10^-6 C. The charge on Object C is +1.2 x 10^-6 C. If the distance between A and C is twice as large as the distance between B and C, sketch the approximate direction of the net electric force acting on Object C. (1 mark)