Homework Statement
I'm looking at an electron-in-a-box with walls at x=0 and x=L; I want to calculate the uncertainty (delta p) in the measurement of its momentum: sqrt(<p^2>−<p>^2) for its nth excited state.
Homework Equations
The normalized wave function: psi_n(x)=sqrt(2/L)*sin(n*pi*x/L)...