(adsbygoogle = window.adsbygoogle || []).push({}); Quantum Mechanics "Expectation"

1. The problem statement, all variables and given/known data

1. Calculate the expectation value [tex]<p_{x}>[/tex] of the momentum of a particle trapped in a one-dimensional box.

2. Find the expectation value <x> of the position of a particle trapped in a box L wide.

2. Relevant equations

[tex]\psi _{n}=\sqrt{\frac{2}{L}}sin \frac{n\pi x}{L}[/tex]

[tex]<p_{x}>=\int \psi^*p_{x}\psi dx[/tex]

[tex]<x>=\int \psi^*x\psi dx[/tex]

3. The attempt at a solution

I got confused on choosing the limits for both the problems for integrating them. What's the limits I should chose for both the problems.

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# Homework Help: Quantum Mechanics Expectation

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