College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 43

A nonrelativistic particle of mass m and charge q is accelerated from rest through a potential difference V. (a) Use conservation of energy to find a symbolic expression for the momentum of the particle in terms of m , q , and V. (b) Write a symbolic expression for the de Broglie wavelength using the result of part (a). (c) If an electron and proton go through the same potential difference but in opposite directions, which particle will have the shorter wavelength