For each charge distribution: -6.0 x 105 C Z 9 E 2.0 m - 6.0 x 10-5 C 3.0 m 4.0 x 105 C A 92 3.0 m q2 2.0 m 2 -3.0 x 10-5 C A a. Determine the net electric field at point A. b. The magnitude of the electric field due to each charge, (i.e. calculate 1 and 2), at point A. a. For each part in practice question 1, find the net force on a -1.2 x 10-5 C charge placed at point A. b. How would your answer change if the sign of the charge from 2a at point A was changed?