1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Shrodinger equation/Particle in a box

  1. Apr 30, 2010 #1
    1. What is U(x)psin(x) in the interval 0 < x < L? (less than or equal to)

    2. In previous problems I had found the following:

    Second deriv. of psi(x) = -(n*pi/L)2*C*sin(n*pi*x/L)

    U(x)*psin(x) = 0

    3. From the above and the Shrodinger equation, I added U(x) = 0 to the second derivative of psi given above multiplied by -h-bar/2m, obtaining the incorrect answer of:

    (h-bar*n*pi)2/2mL2 * C * sin(n*pi*x/L)
  2. jcsd
  3. Apr 30, 2010 #2
    I don't think you will receive much help if you don't clearly explain your problem. For example, what is U(x)? Also, you might want to use latex or people will be put off trying to decipher what you wrote.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook