The Total Energy of a Moving Electron Is $0.758 \mathrm { MeV }$

question 76

Multiple Choice

The total energy of a moving electron is $0.758 \mathrm { MeV }$ . What is the speed of the electron in terms of $c$ ? The rest mass energy of an electron is $0.511 \mathrm { MeV }$ .

• A) \(0.306 \mathrm { c }\)
• B) \(0.794 c\)
• C) \(0.739 c\)
• D) \(0.933 c\)

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