A total electric charge of 3.10 nC is distributed uniformly over the surface of a metal sphere with a radius of 29.0 cm. The potential is zero at a point at infinity. Find the value of the potential at 14.5 cm from the center of the sphere. OK, i converted the nC to C and cm to m. I tried using the equation to find the potential V=k*(q/r) where q = 3.1*10^-9 C and r = .145m but the anwers i'm getting is wrong. is there anything im missing?