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Suppose initially a particle is in the ground state of a 1-dimensional infinite square well which...

Suppose initially a particle is in the ground state of a 1-dimensional infinite square well which extends from x = 0 → a. The wall of the square well is suddenly moved to 2a, so the square well now extends from x = 0 → 2a. What is the probability of finding the particle in the n = 3 state of the new (larger) square well?

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