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What Is the Speed of an Electron That Has the Same

Question 23

Multiple Choice

What is the speed of an electron that has the same momentum as a photon with a wavelength in vacuum of 488 nm? The mass of an electron is 9.11 × 10-31 kg.


A) 1.5 × 103 m/s
B) 1.9 × 103 m/s
C) 2.1 × 103 m/s
D) 2.3 × 103 m/s
E) 2.9 × 103 m/s

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