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Applies to questions of primarily educational value - not only questions that arise from actual homework assignments, but any question where it is preferable to guide the asker to the answer rather than giving it away outright. Please READ THE GUIDANCE IN META before asking homework-like questions.

4 votes
3 answers
379 views

What are the magnitudes of the acceleration of the falling balls B and C relative to A? (Nee...

I'm mostly having a problem incorporating the approximation. My trouble is towards the bottom of the post, but I wrote down all of my steps just in case I made an error somewhere. So in this question …
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3 votes
1 answer
1k views

Time evolution of a Gaussian wave packet, why convert to k-space?

I'm trying to do a homework problem where I'm time evolving a Gaussian wave packet with a Hamiltonian of $ \frac{p^{2}}{2m} $ So if I have a Gaussian wave packet given by: $$ \Psi(x) = Ae^{-\alpha x …
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  • 158