1. [30 POINTS] A small sphere of mass m = 7.50 g and charge q; = 32.0 nC is attached to the end of a string and hangs vertically as shown in the figure. A second charge of equal mass and charge q, = 58.0 nC is located below the first charge a distance d = 2.00 cm. (a) Find the tension in the string. (b) If the string can withstand a maximum tension of 0. 180 N, what is the smallest value d can have before the string breaks? "3 T ol 3