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I have a gas or a liquid in a container. Can I increase its pressure with sound waves or ultrasound or something? What I have in mind is that I...
Asked on 07/09/2021
2 answerHere is the problem. A block (box) of a mass $M$ being pushed along a floor by a constant force of $F_text{push}$. Both the static $mu_s$...
Asked on 07/09/2021 by Literature_lover
3 answerSo I was wondering, in quantum physics beautiful graphs are introduced displaying spherical harmonics relying on the quantum numbers of $m$ and $l$. But is it possible to...
Asked on 07/09/2021 by Tim van schaik
1 answerI don't like it being defined as $vec{r} times vec{mv}$ as the angular nature is not obvious in that definition. Suppose there's a single particle moving around. We choose...
Asked on 07/09/2021
2 answerSo in a discussion today I wanted to show someone the relationship between a star's color and their surface temperature. Expecting to find a chart such as ...
Asked on 07/09/2021 by Mephane
2 answerI'm trying to calculate the symmetric traceless tensor for the octupole moment in cartesian coordinates... I have to deal with the electrostatic potential of the form: $Phi^{(4)}(textbf{r})=int d^{3}r^{prime}rho(textbf{r}^prime)bigg[frac{1}{3!}partial^{prime}_{k}partial^{prime}_{j}partial^{prime}_{i}bigg(frac{1}{|textbf{r}-textbf{r}^prime|}bigg)bigg|_{textbf{r}^prime=0}r_{i}^{prime}r_{j}^{prime}r_{k}^{prime}bigg]$ where the...
Asked on 07/09/2021
2 answerAs a beginner for CFD modelling of plate subduction I heard comsol to be a good software. Can anybody suggests alternatives and the demerits of using COMSOL Multiphysics?...
Asked on 07/09/2021 by papun
0 answerI am trying to get familiar with the ground state energy of an operator. In my lecture we defined the ground state energy of a self-adjoint operator $H$ that...
Asked on 07/09/2021 by uzizi_1
1 answerDoes it mean that If we provide 100 KeV energy to the nucleus in that resonant state then it will decay through a neutron emission?...
Asked on 07/09/2021 by new_to_nuclear
1 answerThere appears to be a simple recipe for producing photons with arbitrarily small velocities: Swing a backward facing torch, with refractive index n, around in a circle at c/n....
Asked on 07/09/2021 by cumfy
0 answerGet help from others!
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