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I've been looking at the Christoffel Symbols for parallel shift in polar coordinates. Therefore I used the general basis vectors: $vec{q}_r=vec{e}_r$; $vec{q}_varphi=rcdotvec{e}_varphi$ I looked at a carthesian vector...
Asked on 08/12/2021
0 answerI was trying to understanding the shell momentum balance from https://www.youtube.com/watch?v=sMsw8BPT578. At 26:25 if you see the teacher is saying momentum in - out. Although I have...
Asked on 08/12/2021 by Vishesh Mangla
0 answerin a given (TD)DFT code with an atomic basis set, i.e.$$psi(mathbf{r},t) = sum_i c_i(t) phi_i(mathbf{r})$$(where the non-on-site basis functions $phi_i$ aren't necessarily orthogonal), the kinetic energy...
Asked on 08/12/2021
2 answerFor example, the dimensions of the universal gas constant come close: only luminous intensity and current are excluded. $$ mathsf{M} mathsf{L}^2 mathsf{T}^{-2} mathsf{Theta}^{-1} mathsf{N}^{-1} $$ Is there any derived...
Asked on 08/12/2021
0 answerDoes precession (of a top for example) occur only whenever the angular velocity vector is not parallel to a principal axis? I have yet found any clear...
Asked on 08/12/2021
1 answerThe circuit diagram is as shown. As per the book voltage across the capacitor is maximum during resonance that is p=1/√(LC) But what I found out is a bit different...
Asked on 08/12/2021
3 answerI'm currently studying Method of Images in Griffiths book and in section 3.2 he introduces the method of images for a point charge at a distance $d$ from a...
Asked on 08/12/2021 by Little Gravity
1 answerI have seen explanations that canonical momentum for charged particles $p = mv + qA/c$ is not a measurable quantity/observable because it is not gauge invariant. However, there are...
Asked on 08/12/2021 by suncup224
1 answerI'm trying to understand how high-order derivatives (Jerk, Snap, Crack, Pop and onward) impact a system and their implications to analysis. I have used Jerk in the past when considering...
Asked on 08/12/2021
1 answerThe actual nature of the gravitational force between matter and anti-matter (attractive or repulsive) remains unsettled: See Are there experiments taking place right now that might show evidence...
Asked on 08/12/2021
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