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In the Feynman Lectures on Physics, Volume 2, Chapter 6, Section 6-4 Feynman derives the electric potential due to a sphere with a surface charge distribution proportional to the cosine...
Asked on 07/27/2021
1 answerIn deriving the density of electrons at the bottom of the valence band in a semiconductor, $$n(T) = int^infty_{epsilon_C} frac{g_c(epsilon)}{e^{beta(epsilon - mu)}+1}$$ we approximate the integral as $$n(T)...
Asked on 07/27/2021
1 answerIn my textbook it is given that "The refractive index of a substance does not depend on the angle of incidence" ButRefreactive index =sine of angle of incidence/sine of...
Asked on 07/27/2021 by Harsh Gautam
3 answerI'm not a physicist so forgive me if this question is silly. I'm reading (actually listening) to Mysteries of Modern Physics: Time by Prof. Sean Carroll. ...
Asked on 07/27/2021 by Bolza
2 answerSo I saw this article stating that gravity is stronger on the top on the mountain due to there being more mass under you however I have read some questions...
Asked on 07/27/2021 by Bartlomiej Dlugosz
6 answerIn certain circumstances; when energy fluctuation effects are minimal, the microcanonical and canonical ensembles give the same results. Then, under different circumstances the canonical and grand canonical ensembles give the...
Asked on 07/27/2021 by sendlokashun
1 answerThe following infinitesimal transformation of phase space coordinates (for infinitesimal $epsilon$) is apparently canonical (preserving Hamilton's equations and Poisson brackets): $$ q_i' = q_i + epsilon frac{partial g}{partial...
Asked on 07/27/2021
1 answerI am working on this separation of the variable problem, and given that this square conducting pipe of side length 2a, while also parallel to the z-axis. They give that:...
Asked on 07/27/2021 by Phantomvex
0 answerSuppose I have two cocentric circular loops, one with radius $R_2$ and one with radius $R_1$ where $R_2$ is the radius of the larger loop. Current is...
Asked on 07/27/2021 by variations
1 answerI am having some trouble deriving the transormation laws for the weyl spinors, equation (3.37) in the Peskin Schroesder book on quantum field theory. Beginning with the relation $psito(1-frac{i}{2}omega_{munu}S^{munu})psi$...
Asked on 07/27/2021
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