Physics Electrostatics Level: Misc Level

Point charges +4.1 uC and -2.2 uC are placed on the x axis at (11 m,0) and (-11,0), respectively. (a) Sketch the electric potential on the x axis for this system. (b) your sketch should show on epoint on the x axis between the two charges where the potential vanishes.In the point closer to the +4.1 uC charge or closer to the -2.2 uC. explain. (c)  find the point refered to in part b