Hi everyone, I have a problem regarding this question. An electron is and it is being attracted to 2 stationary protons. The 2 protons are at a vertical distance of 6x apart and the electron passes through the centre of the line joining the 2 protons (3x below the top proton and 3x above the bottom proton), and at right angle to that line. The electron is released at a distance of 4x from the vertical mid-point of the 2 protons. What is the max KE of the electron? I found the potential at the mid point of the 2 protons which the electron will pass through to be at e/6(pi)(Enot)x, and eV is the KE so it gives e^2/6(pi)(Enot)x. The answer is wrong and the one I've been given is a 15 at the denominator and not 6. Can anyone point out my mistake? thanks!