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a) What is the DeBroglie wavelength of an electron moving at 2.8x10^6 m/s? b) What is...

a) What is the DeBroglie wavelength of an electron moving at 2.8x10^6 m/s?

b) What is the energy of a photon with the same wavelength?

c) What is the DeBroglie wavelength of a proton with the same kinetic energy as the photon in the previous part?
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