An electron and proton with the same energy E approch a potential barrier whose height V is greater than E. Do they have the same probabilty of getting through? If not, which has a greater probability? Why is that true? So if the electron and proton have the same energy, that means that the electron must be moving faster than the proton becuase the proton is more massive. Becuse the electron is moving faster, would its wavefunction have a larger amplitude than that of the proton? If that is so, then I think the electron is has a higher probabilty of getting through. Any thoughts....refrences?