Question
Show that the group velocity for a nonrelativistic free electron is also given by $v_{\mathrm{g}}=p / m_{\mathrm{e}}=v_{0},$ where $v_{0}$ is the electron's velocity.
Step 1
Step 1: The energy of a non-relativistic free electron is given by $E=\frac{p^{2}}{2m_{e}}$, where $p$ is the momentum of the electron and $m_{e}$ is the mass of the electron. Show more…
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