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I am working through the Landau Lifshitz book on Hydrodynamics (sorry, I only have the Russian version). In the chapter where the momentum tensor is derived, the equations are presented...
Asked on 06/01/2021 by euler132
1 answerWhen we write kinetic energy for orbital mechanics, we usually write $$ K= frac{1}{2} m dot{r}^2 + frac{1}{2}m r^2 dot{phi}^2$$ I understand the first term is the tangent...
Asked on 05/31/2021
3 answerIn QFT we use, rather than a single Hilbert space, $mathcal H$, a Fock space$^1$: $$F_v(mathcal H)=bigoplus_{n=0}^infty S_vmathcal H^{otimes n}, tag{1}$$ which allows for states to exist...
Asked on 05/31/2021
2 answerFor $n$-body systems you just need a single component wavefunction.For example, for a two-body system you would need a wavefunction of 6 variables. $psi(x_1,x_2,y_1,y_2,z_1,z_2)$ That satisfies the...
Asked on 05/31/2021
0 answerMany textbooks refer that osmotic pressure is the pressure we must exert in order for osmosis to stop. But other also refer that osmosis will stop eventually...
Asked on 05/31/2021
2 answerFor the description of a chiral multiplet in Supersymmetry there are 2 formalisms, the one I am used to presented for instance in the Supersymmetry Primer of SP Martin which...
Asked on 05/31/2021
0 answerIn light phenomena (lenses and mirrors), we know the formula $frac{1}{v} + frac{1}{u} = frac{1}{f}$ which describes the relation where, $v$ = the distance of the image from...
Asked on 05/31/2021
2 answerWould an object rotating in orbit 2,000 miles above the Earth be expected to generate the exact same centripetal force as an identical object with identical spin velocity in orbit...
Asked on 05/31/2021 by Ryan Hibbard
0 answerAny rank 2 tensor would do the same trick, right? Then, which is the motivation for choosing the metric one? Also, if you help me to prove that...
Asked on 05/31/2021
7 answerAs I have learned in my engineering classes convection takes place when a fluid meets a surface of both different temperatures. My question: can this also be evaluated for two...
Asked on 05/31/2021 by jessegerritsen
1 answerGet help from others!
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