Three protons are each located at the corners of an equilateral triangle as shown. One other proton is located in the middle of two charges. If s=3.46 um, the total electric potential energy of the system of protons relative to infinity is most nearly?

An ion, starting from rest, accelerates from point A to point B due to a potential difference between the two points. Does the electric potential energy of the ion at point B depend on (a) the magnitude of its charge and (b) its mass? Does the speed of the ion at B depend on (c) the magnitude of its charge and (d) its mass?

I have a question regarding two charges on an axis. The problem is as follows: Two particles each with charge +1.79 µC are located on the x axis. One is at x = 1.00 m, and the other is at x = −1.00 m. (a) Determine the electric potential on the y axis at y = 0.520 m. (b) Calculate the change in electric potential energy of the system as a third charged particle of -3.81 µC is brought from infinitely far away to a position on the y axis at y = 0.520 m.

Two point charges Q1 = -2.00 nC and Q: = +4.00 nC are separated by 40.0 cm. (a) What is the potential energy of the pair? (b) What is the electric potential at a point midway between the charges?