Alyosha
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 Dec 19 comment Where does the energy flow differ between a forward and reverse process? Thanks, it seems I was confusing $E$ with $\Delta E$. Dec 19 accepted Where does the energy flow differ between a forward and reverse process? Dec 19 revised Where does the energy flow differ between a forward and reverse process? edited title Dec 19 revised Where does the energy flow differ between a forward and reverse process? added 4 characters in body Dec 19 asked Where does the energy flow differ between a forward and reverse process? Dec 14 comment Confined in a box, what is the average distance between a particle hitting a side? @tpg2114 given that this problem is so common in kinetics, could you provide a link to a website explaining it? Dec 13 comment Am I faster than my shadow? Imagine a much slower speed of light. If you accelerate, the speed of your head's shadow will be slower as the ground is recieving light (and information about the blockage of light) from yourself a few seconds ago. Note that I'm assuming detectors on the ground, not eyes, measure the speed of shadows. Dec 13 comment Confined in a box, what is the average distance between a particle hitting a side? That's only for the top edge of the square, and $\theta \ne 0$ anywhere on here, so there is no problem. For the other sides, make a phase shift of $\pi$ or $\pm \frac{\pi}{2}$ Dec 12 revised Confined in a box, what is the average distance between a particle hitting a side? added 884 characters in body Dec 12 revised Confined in a box, what is the average distance between a particle hitting a side? added 884 characters in body Dec 12 asked Confined in a box, what is the average distance between a particle hitting a side? Dec 3 awarded Caucus Dec 3 awarded Constituent Dec 3 accepted Directionality of angular momentum Dec 2 comment Directionality of angular momentum A teacher. If it was a book I would cite it. Dec 2 comment Directionality of angular momentum The problem I was having is that he seemed to imply that the value [sum of all linear momentum] could grow or shrink to [sum of all angular momentum]'s loss or gain (losses/gains are equal in magnitude). On reflection, I think he may have just been wrong, but I wanted to check here that I wasn't being an ignoramus. Dec 2 comment Directionality of angular momentum It was an implicit assumption, as with any momentum conservation questions. Dec 2 asked Directionality of angular momentum Nov 30 accepted Is there a mathematical derivation of potential energy that is *not* rooted in the conservation of energy? Nov 30 comment Is there a mathematical derivation of potential energy that is *not* rooted in the conservation of energy? Thank you for the mathematical description. Is there nothing more to energy and work other than 'a value that is conserved' (although not conserved in the same way, or course)?