Recent content by joelcponte

Homework Statement The electron in a hydrogen atom is described by the following superposition of two states: |\psi> = \frac{1}{\sqrt{2}}(|n=2,l=1,m=0,s_z= +1/2> + |n=2,l=0,m=0,s_z= +1/2>) (b) Let J = L + S be the total angular momentum. Express state \psi in basis |n, l, J, J_z>...

Oh, really? I didn't know that! Do you know anywhere I can read about it? Thank you for your help!

Hi, I can't see how does the sin term disappear when I use the boundary condition at b =\

Homework Statement Heat equation in a annulus, steady state solution. u(a,θ,t) = Ta u(b,θ,t) = Tbcos(θ) Homework Equations Using separation of Variables \frac{}{}\frac{1}{r}\frac{d}{d r}(r\frac{d R}{d r}) + \frac{1}{r^2}\frac{d^2\Theta}{d \theta} = 0 The Attempt at a Solution...