A proton is located at a distance of 0.420 m from a point charge of+8.30 C. The

Question:

A proton is located at a distance of 0.420 m from a point charge of+8.30 µC. The repulsive electric force moves the proton until it is at a distance of 1.58 m from the charge. Suppose that the electric potential energy lost by the system were carried off by a photon. What would be its wavelength?