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An Electron Has a Speed of 0

Question 35

Multiple Choice

An electron has a speed of 0.643c.Through what potential difference would the electron need to be accelerated (starting from rest) in order to reach this speed? (c = 3.00 × 108 m/s, e = 1.60 × 10-19 C,mel = 9.11 × 10-31 kg)


A) 160 kV
B) 130 kV
C) 180 kV
D) 200 kV

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