Advanced physics

Oct 2019
1
0
Use non-degenerate perturbation theory to solve the following problem: Consider a string of length L, that is perturbed by having its density be slightly higher between x=L/4 and x=L/2. You should assume the density increase is uniform along the stretch.

How do the wave vectors change?

How do the angular frequencies change?

How do the eigenfunctions change?
 
Jun 2016
1,143
514
England
No Idea.

Looks like you've beaten us with those questions...