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What is the de Broglie wavelength of an electron (m = 9.11 × 10^–31 kg) in...

What is the de Broglie wavelength of an electron (m = 9.11 × 10^–31 kg) in a 5.0 × 10^3-volt X-ray tube?

a. 0.017 nm

b. 0.007 nm

c. 0.028 nm

d. 0.034 nm

e. 0.014 nm

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