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Protons and neutrons have nearly the same mass. How different are their wavelengths? Calculate the wavelength of each particle when traveling 2.75 * 10^5 m/s in a particle accelerator and report the difference as a percentage of the wavelength of the neutron.
The de Broglie wavelength equation relates h to p and p is equal to mass times velocity. Therefore you can substitute p (momentum) for the mass of the proton/neutron and the velocity is the same for either particle (as given in the prompt). h is Planck's constant.
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