1. The problem statement, all variables and given/known data Hi, I have a problem related to some quantum concepts. One teacher of mine has tasked me with solving the next problem: Given a particle on its fundamental state in a potential pit of width a, V=0 between 0 and a and infinite at the rest of the space. Suddenly, the width changes to 2a, we proceed to measure the energy without changing the wave function. a) Which is the most likely value? And the probability of measuring that value? b) Which is the expected value of the energy? And its uncertainty? 2. Relevant equations E=(P2/2m)+V(x) ^H=(-iħ*(∂/∂x))2/2m +V(x) E=∫dxψ*[^H]ψ+V(x), the integration limits are 0 and a. <E>=∫φEφE*, the integration limits are 0 and a. 3. The attempt at a solution If we double the width of the pit , we double the integration limits; the eigenvalues of the function don't change if the function doesn't. I'n not sure how th keep with it, so any help would be appreciated. Thanks.