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If I have a charge $q$ above a grounded conducting plane, I know I can calculate the potential of the charge using image method. Since the plane is grounded,...
Asked on 01/08/2021 by Ssw1004
1 answerWhat should be the correct definition for a flow between infinite parallel plates? If I have a very long rectangular channel with height H and width W, can I approximate...
Asked on 01/08/2021 by johz
0 answerI should begin by noting that I am NOT a physicist, I study differential geometry and so my physics background is extremely limited. That being said I was reading a...
Asked on 01/08/2021 by Jonah Weinbaum
0 answerIn cosmology it's frequently said that photons from the early universe carry information from that time. However, wouldn't they also carry data from later interactions? How do we ...
Asked on 01/08/2021 by Manish Kumar Singh
1 answerI was trying to prove the differential Bianchi identity by applying the covariant derivatives to each of the Riemann tensor terms $R^{lambda}_{sigmamunu;rho}+R^{lambda}_{sigmanurho;mu}+R^{lambda}_{sigmarhomu;nu}=0spacespacespacespacespacespace(1)$ and I got here: $R^{lambda}_{sigmamunu;rho}=R^{lambda}_{sigmamunu,rho}+Gamma^{lambda}_{mrho}R^{m}_{sigmamunu}-Gamma^{m}_{sigmarho}R^{lambda}_{mmunu}-Gamma^{m}_{murho}R^{lambda}_{sigma mnu}-Gamma^{m}_{nurho}R^{lambda}_{sigmamu...
Asked on 01/08/2021
2 answerI've a spring and I give it a single impulse towards left. A compression zone is produced as is shown...
Asked on 01/08/2021
1 answerIt seems that I have been stuck on this one paragraph about the derivation of the law of reflection using...
Asked on 01/08/2021 by Lyle
1 answerI am confused as to when each should be used to solve problems.I am not looking for the answer to this question, but I will include it here so you...
Asked on 01/08/2021 by Jo.P
2 answerMy main source of information about objective collapse theories is this review article by Bassi et al. There seem to be some problems with...
Asked on 01/08/2021
1 answerI am doing a problem in which I am drawing free-body diagrams for different objects in a system, and two of the objects which are included in my scenario are...
Asked on 01/08/2021 by Eva
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