1) What is the speed and momentum of a proton with kinetic energy 500 MeV?
2) What is the de Broglie wavelengeth of the proton in the above problem?
3) Find the maximum wavelength of light capable of ejecting an electron from a copper sample with a velocity of 1.75 * 10^6 m/s. Assume you can use the Newtonian equation for kinetic energy.