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Oct
6
awarded  Editor
Oct
6
revised Electron Incident On A Finite Potential Barrier
removed the phrase "minus infinity"
Oct
6
comment Electron Incident On A Finite Potential Barrier
Thanks, that's a good idea. After substituting in, I'm getting $k_{left}=6.2746\times10^{-9}\;m^{-1},$ $k_{right}=3.62264\times10^{-9}\;m^{-1},$ and $|D|^2+|G|^2=1.67949|C|^2,$ so I must have made a mistake somewhere...
Oct
6
asked Electron Incident On A Finite Potential Barrier
Sep
23
accepted Length Contraction And Simultaneity
Sep
23
asked Length Contraction And Simultaneity
Sep
8
awarded  Scholar
Sep
8
awarded  Supporter
Sep
8
accepted Rotating/Translating Disk
Sep
8
comment Rotating/Translating Disk
Thanks Ron. I wasn't actually stuck on conservation of energy, but rather conservation of momentum. Your answer helped, though. If the same impulse is applied in both cases, the disk acquires rotational as well as translational momentum in one case, but only translational momentum in the other case. But I guess if you look at the rotational momentum of the disk as if it were translational momentum (by summing up each part of the disk), then it would actually be zero. Does that make sense? I upvoted your answer!
Sep
8
awarded  Student
Sep
8
asked Rotating/Translating Disk