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Question: 

Calculate the maximum kinetic energy of the electron when a muon decays from rest via $\mu^- \rightarrow \textrm{e}^-$ + $\bar{\nu}_\textrm{e}$ + $\nu_\mu$. [Hint: In what direction do the two neutrinos move relative to the electron in order to give the electron the maximum kinetic energy? Both energy and momentum are conserved; use relativistic formulas.

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

$52.3 \textrm{ MeV}$

Giancoli 7th Edition, Chapter 32, Problem 26

(8:33)

Chapter 32, Problem 26 is solved.

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