Consider the two small, equal-mass, charged spheres shown in the figure. The top sphere is suspended from the ceiling by a filament, and has a charge of g, = 31.9 nC. The bottom sphere has a charge of g, = 58.0 nC, and is directly below the top sphere, Assume d = 2.00 cm and m = 7.60 g. thB T_ d ey ' @ (a) Calculate the tension (in N) in the filament. IN J (b) If the filament can withstand a maximum tension of 0.180 N, what is the smallest value d can have before the filament breaks? (Give your answer in cm.) r 3 cm