Expectation value of $\frac{1}{r^2}$ of hydrogen atom
71539
The average of inverse square radius $r^{-2}$ for any state quantum $|n\ell\rangle$ using the radial Schrödinger equation
132392
Properties of Expectation
25262
Why can we apply the $E=hf$ equation for electrons?
90336
Harmonic oscillator coherent state expectation values
124988
$E=kT$ or $\frac32kT$?
53555
Calculate expectation of a geometric random variable
79785
Determining the limit $\lim_{h\to0} \frac{\cos(x+h) - \cos(x)}{(x+h)^{1/2} - x^{1/2}}$
4287
Proving $\int_{0}^{\infty} \mathrm{e}^{-x^2} dx = \frac{\sqrt \pi}{2}$
121197
Eigenvalues and eigenfunctions of the exponential potential $ V(x)=\exp(|x|) $
106609
Show that $e^{iy} = 1 + iy + \frac{\mu_1 y^2}{2}$ for all $y \in \mathbb{R}$ with $|\mu_1| \leq 1$
94319
Expected value of $|X - Y|$
58240
Find the expected value of $\frac{1}{X+1}$ where $X$ is binomial
68523
Am I doing this right? Finding the time derivative of expectation value of momentum
123776
Questions about the Fermi-Dirac distribution at $T=0.$
28350
$\lambda=\frac{2h}{p}$ instead of $\lambda=\frac{h}{p}$?
82418
Why not drop $\hbar\omega/2$ from the quantum harmonic oscillator energy?
79647
Where does the term $|\psi\rangle\langle\psi|$ come from while calculating the expectation value?