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Currently, I am reading chapter 3 of Condensed Matter Field Theory, which is on the Path Integral formulation of quantum mechanics. The book denotes $Delta t = t/N$, where...
Asked on 06/13/2021
1 answerInspired by Eugene Khutoryansky video about Bernoullis law (https://www.youtube.com/watch?v=TcMgkU3pFBY), I decided to put the thoughts and ideas from her video into mathematical terms. My derivation of Bernoullis...
Asked on 06/13/2021 by Susp1cious
0 answerI'm having trouble understanding the kind of interference leading to shock wave formation and how it relates to the velocity of the wave source.I came across this image: ...
Asked on 06/13/2021
1 answerBackground of the question (see pp. 161, section 47 in Landau & Lifshitz's quantum mechanics textbook Vol3, 2nd Ed. Pergamon Press).We have the following potential well$$U(x)leq E...
Asked on 06/12/2021 by J.Yang
1 answerFrom the Wikipedia page on internal energy I get the following definition $$U=TS-PV+summu_iN_i$$ Hence,$$dU=TdS+SdT-VdP-PdV+summu_idN_i$$ For constant pressure and temperature and when there is no...
Asked on 06/12/2021
1 answerScientist look out at the universe and observe red shifts for galaxies that are roughly proportionate from their distance from us and attribute it to a velocity away from us....
Asked on 06/12/2021
1 answerWhen deriving the electrostatic boundary conditions for any charge distribution (to my knowledge at least), Griffiths in his textbook references this illustration: ...
Asked on 06/12/2021
1 answerIf a person (free)falls into a black hole at some point or the other, he will be stretches by a 'force differential' between the two ends of his body. This...
Asked on 06/12/2021
2 answerLet $epsilon_i$ be the internal energies of a microstate. We are supposed to show that the equation $$mathscr E = frac{sum_{i=1}^{N}epsilon_imathrm e^{-beta epsilon_i}}{sum_{i = 1}^{N}mathrm e^{-beta epsilon_i}}$$ has...
Asked on 06/12/2021
1 answerIn physics, the teacher showed us a question about balancing torque using an 8-foot seesaw that is 30lb with a 100lb person on one side, asking us to find how...
Asked on 06/12/2021
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