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Calculate the de Broglie wavelength of (a) a 0.942 keV electron (mass = 9.109 × 10-31...

Calculate the de Broglie wavelength of

(a) a 0.942 keV electron (mass = 9.109 × 10-31 kg),

(b) a 0.942 keV photon, and

(c) a 0.942 keV neutron (mass = 1.675 × 10-27 kg).

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