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Can we apply Bernoulli equation to a closed system the same way we apply it to an open system?In an open system increasing the speed of the fluid implies...
Asked on 08/02/2021 by Bayan
2 answerI am trying to find a quantum field theory (a Yang-Mills theory) for the identical particles exchange interaction. For a system of $N$ identical particles one has the state $|x_1,x_2,ldots,x_Nrangle$...
Asked on 08/02/2021
1 answerI do not understand what the $bar 1_x$, $bar 1_y$ and $bar 1_z$ are. I'm assuming it's just a way of saying $x$, $y$ and...
Asked on 08/02/2021 by Harsh Dua
1 answerI noticed that static cling film does not seem to electromagnetically interact with itself, from which I deduced that it cannot have a static charge. Googling lead me to sites...
Asked on 08/02/2021
0 answerEquation of principal angles: $$tan 2theta_p=frac{2tau_{xy}}{sigma_x-sigma_y}$$ Equation of principal stresses:$$sigma_{max}, sigma_{min} = {sigma_{xx} + sigma_{yy} over 2} pmsqrt{ left( {sigma_{xx} - sigma_{yy} over 2} right)^2 +...
Asked on 08/02/2021 by user260844
1 answerIs it possible to build low cost Ultra High Vacuum Chambers and Atomic Force Microscopes?I found a publication about a low cost AFM and I also...
Asked on 08/01/2021
2 answerI came across the following equation for proper distance: $$ds^{2} = -c^{2}dt^{2} + [dx - v(t)f(r(t))dt]^{2} + dy^{2} + dz^{2}$$ where the function $v(t)$ tells you the velocity...
Asked on 08/01/2021
1 answerIn my work I want to find correlator $langle Delta^{{k}} |T(z)T(w)| Delta^{{l}} rangle $, where the states are some descendants of primary state $Delta$. For this, I’d...
Asked on 08/01/2021
0 answerI am self-learning GR. Intro: Tetrads are a way of representing general relativity in a coordinate-independent fashion. I am having trouble understanding tetrad notations. Basically, I know that I can...
Asked on 08/01/2021 by Otto
1 answerWe know the relation of resistivity with its length, area. But what will happen if we increase or decrease mass density of material.Will the mean free path be changed? Will...
Asked on 08/01/2021 by Satyam
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