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I am trying to relate Lenz's Law with the polarity of the coil in an AC generator. I could find only one website regarding this- http://www.odec.ca/projects/2007/ball7l2/ac_generators.htm According...
Asked on 02/05/2021 by Gokulakrishnan Shankar
2 answerI am going over old homework where an exercise is questioned as follows: There are 4 identical and equally spaced lenses between the sample and the camera. The distance from...
Asked on 02/05/2021
0 answerThe energy momentum tensor for a perfect fluid is defined as: $$T^{mu nu} = (rho + p)U^mu U^nu + p eta^{mu nu}$$ Where $rho$ is the energy...
Asked on 02/05/2021 by AmagicalFishy
1 answerI'm trying to write up all the possible superposition states for 3 spin-1/2 particles (one spin-up, 2 spin-down). Lets denote $|uparrow rangle = |0rangle, |downarrow rangle = |1rangle$. Intuitively,...
Asked on 02/05/2021
1 answerIn doing instanton problems or when connecting quantum field theory to statistical mechanics, I often see people trying the Wick rotation trick by defining an imaginary time $tauequiv it$....
Asked on 02/05/2021
1 answerI've attached a fairly benign example from the fourth edition of Griffiths's Introduction to Electrodynamics.My only problem with the example, which was something that bothered me in other parts...
Asked on 02/04/2021
1 answerI would like for someone to review and confirm or critique my thoughts on the relationship between entropy and information. My thoughts are oriented towards large "brush strokes" rather than...
Asked on 02/04/2021
0 answerLet us consider a 3D box of volume $V$, containing $N$ identical Brownian particles. The diffusion coefficient of the particles is noted $D$. Inside this box there is a square...
Asked on 02/04/2021
2 answerHow can to derive $F = m H$?I know: $$ F = frac{mu m_1 m_2}{4pi r^2}$$ $$mu = frac {B}{H} $$ $$ H = frac{mu m}{4pi...
Asked on 02/04/2021 by Shub
2 answerDoes a virtual particle that enters a black hole also become a real particle just like the one that escaped? If so then the mass taken away from the...
Asked on 02/04/2021 by Christine Annette LaBeach
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