Recent content by eit32

well i think i problem I'm running into is that the wave function for the box isin the form of a sine function Asin((n pi x)/a)sin((n pi y)/b). sin((n pi z)/c). But if i just sub in my infinity then that doesn't really make sense, it just goes to sin(0).

If I know how to get a wave function for a 3-dimensional particle in a box problem, what adjustments must I make to solve the same problem for a particle traveling in the +z direction in a tube of infinite length? Box: 0<x<a 0<y<b 0<z<c Tube: 0<x<a 0<y<a 0<z<infinity

I have been using a test function but everything keeps canceling out and i don't think its suppose to

Do the Hamiltonian (H) and the z-component of angular momentum (L_z) commute? [H, L_z]=0 H = [(-(hbar)^2/2m) dell^2] + V(r, theta, phi) where dell is the gradient, and V is the potential L_z = -i(hbar)(d/d phi) where d is actually a partial derivative I know how to find a...

6) Using Hubble’s law, estimate the wavelength of the 590 nm sodium line emitted from galaxies (a) 2*10^6 lightyears away from Earth, (b) 2*10^8 lightyears away, and (c) 2*10^9 lightyears away. ** Use the relativistic Doppler formula for light emitted from a receding source)

ok that's what, just want to check...thanks

Is it possible to know both the y-coordinate and the momentum in the x-direction at the same time? (I know that you can not know the x-coordinate and the momentum in the x-direction, but I'm not sure about y-coordinate)

so [(d^2 /dx^2) - x^2]f(x) would just be (d^2 /dx^2)f(x) - x^2 f(x) ?

ok, i know that if we have operators A and B and a function f(x) that ABf(x) means that first B acts on f(x) and the A acts on the resulting function. But what it my operator looks like [(d^2 /dx^2) - x^2]. How do i apply this to my function. Do i just distribute my function to each part of the...

yeah, i took D.E. like 3 years ago and I'm a bit hazy on the details...it looks familar but I'm not really sure where to start it

x d/dx[f(x)]=cf(x)...not really

here it is as a PDF

3 Problems that i am struggling with are attached. FDR407

if L is an opertaor than L[f(x)]=cf(x); where f(x) is an eigenfunction and c is an eigenvalue

a general wave function is usually in the form of either an exponential or sines and cosines, and I'm not really sure about the probability