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suppose I and a friend are moving relative to each other at 87% the speed of light. My friend has a large pendulum with a time period of 10 seconds....
Asked on 06/18/2021
1 answerConsider the Laplace operator in 2 dimensions begin{equation}Delta = frac{partial^2}{partial x^2} + frac{partial^2}{partial y^2} = partial^2_x + partial^2_yend{equation} By defining the complex variables $z$...
Asked on 06/18/2021 by gsuer
1 answerThis is a follow-up to this great answer. All of the other related questions have answers explaining how units come into play when measuring "universal" constants, like the...
Asked on 06/18/2021 by Magix
3 answerI have been attempting to solve the following problem (my question is at the very bottom of this post) And...
Asked on 06/18/2021
1 answerI have grown thin films (~100-500 nm) of PEDOT:PSS by electrodeposition on top of thin films of Au (~1 nm) and now I want to measure the impedance of the...
Asked on 06/18/2021 by preposteroustomato
0 answerI'm reading the book "Symmetry and the Standard Model" by Matthew Robinson. On page 80 of the book the author asserts that given a representation $D(g)$ of a group...
Asked on 06/18/2021
1 answerIn every text/ physics book that I've read, Protons are mentioned as particles that are bigger, way bigger 2000 times to be precise, than electrons...I believed that until a few...
Asked on 06/18/2021
5 answerI'm trying to get the force of constraint. The problem I have is when defying the sign of the potential energy using cylindrical coordinates $(rho,phi,z)$, what I have is:...
Asked on 06/18/2021
1 answerIf rice is cooked in a pressure cooker on the Siachen glacier, at sea beach, and on Deccan plain, which of the following is correct about the time taken for...
Asked on 06/18/2021 by Thejas Suresh
2 answerConsider $phi^4$-theory with counter-terms and renormalized mass, field and coupling constant, described by the Lagrangian$$mathcal{L}= underbrace{frac{1}{2} partial_{mu} phi_{r} partial^{mu} phi_{r}-frac{1}{2} m^{2} phi_{r}^{2}}_{mathcal{L}_{free}}underbrace{-frac{lambda}{4 !} phi_{r}^{4}+left[frac{1}{2} delta_{Z}left(partial_{mu} phi_{r}right)^{2}-frac{1}{2} delta_{m}...
Asked on 06/17/2021
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