- #1
SpaceTrekkie
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Homework Statement
find the result <x> (the expectation value) found when the position of a particle in the second (n=3) excited state of a rigid box.
Homework Equations
<x> = (2/a)[tex]\int[/tex]xsin2(xpi/a)dx
evaluated from 0 to a
The Attempt at a Solution
well when that integral is evaulated using the ground state the answer is a/2. I am not sure how they even got that. But my real problem is, is where does the n = 3 come in?
and where do I go from there?
thanks...