, i 7 E7 1. By what factor will the size of the electric force between two charged spheres change if the charge on one sphere is doubled and the charge on the other sphere it tripled and the distance between them is reduced by one half? 2. Balloon A is rubbed across the back of a pet rabbit and acquires 1.7 x to22 electrons. Calculate the charge generated on the rabbit. 3. Two similarly charged spheres (+1.6 x 10" C; +3.2 x 10'5C) are 10.2 cm apart. Where between them should a third charge be placed so that the net electric force on this charge is zero? (Note: you do not need the sign nor magnitude of this third charge!)