First, I said that the distance between the two spheres is 0.0523m since you can form a right triangle using 0.5m [50cm] as the hypotonose, and 3 degrees as an angle. and multiplying that answer by 2 giving me the distance between the two spheres. From that I know one sphere = 2q, while the other sphere = q. So... F = (K)(q)(2q) / (r^2) From there i'm stuck, since you have two unknowns (charge 'q' and force 'F') I'm thinking of using F=ma = 0 (a=0), then finding using a Free Body diagram to find the force on each sphere and adding them and setting them to zero? So sphere 1 and 2's forces = mg, tension, Electric Force (F/q) where the Forces are equal? I'm not too sure, can anyone give me any suggestions? Thanks for any help.