(a)
The observed mass of electron in the lab.
(a)
Answer to Problem 50PQ
The observed mass of electron is
Explanation of Solution
Write relativistic kinetic energy equation of an electron.
Here,
Write the equation of mass transformation.
Here,
Write the equation of Lorentz factor.
Here,
Substitute,
Substitute
Substitute,
Write the equation for relativistic momentum of equation.
Here,
Convert the unit of
Substitute
Rearrange the above equation.
Take square roots on both sides.
Conclusion:
Substitute
Therefore, the observed mass of electron is
(b)
The momentum of electron.
(b)
Answer to Problem 50PQ
The momentum of electron is
Explanation of Solution
Substitute
Conclusion:
Therefore, the momentum of electron is
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Chapter 39 Solutions
Physics for Scientists and Engineers: Foundations and Connections
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