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Chery Chery
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Posts: 3587
7 years ago
If an electron has the same de Broglie wavelength as the wavelength of a 390-nm photon in vacuum, what is the speed of the electron? (melectron = 9.11 × 10-31 kg, c = 3.0 × 108 m/s, h = 6.626 × 10-34 J ∙ s)
A) 1900 m/s
B) 2100 m/s
C) 1700m/s
D) 1500 m/s
E) 540 m/s
Textbook 
College Physics

College Physics


Edition: 1st
Authors:
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HotMathHotMath
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7 years ago
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Chery Author
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7 years ago
Thanks a million
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