Question: (a) A particle with mass m has kinetic energy equal to three times its rest energy. What is the de Broglie wavelength of this particle?

(a) A particle with mass m has kinetic energy equal to three times its rest energy. What is the de Broglie wavelength of this particle?
(b) Determine the numerical value of the kinetic energy (in MeV) and the wavelength (in meters) if the particle in part (a) is (i) an electron and (ii) a proton.

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