Find answers to your questions about Physics or help others by answering their Physics questions.
Yesterday I saw this question in my text book and I wonder what is the answer for this: Two ships X & Y going in different direction with equal speed....
Asked on 07/16/2021 by M.Ahmad
3 answerVarying the electromagnetic actionbegin{equation}S=-m c int d sleft(dot{z}^{2}right)^{frac{1}{2}}-frac{e}{c} int d s A_{mu} dot{z}^{mu}-frac{1}{16 pi c} int d^{4} x F_{mu nu} F^{mu nu}end{equation}we get the two...
Asked on 07/16/2021
2 answerWhen a droplet of water hits the surface of a lake it produces ripples that travel outward. My conception is that it travels at the speed of sound in water...
Asked on 07/16/2021 by Pedro Pinho
1 answerThe selection rules have $Delta m =0$ for light polarised in the z-direciton trying to excite an atom. Mathematically it is clear that $langle n, l, m_l| z...
Asked on 07/16/2021
1 answerI know what is rest energy $E_0=m_0 c^2$, total energy $E=gamma E_0$, kinetic energy $E- E_0=(gamma-1) E_0$, and momentum $p=gamma m_0 c$. But what is potential energy in special relativity?...
Asked on 07/16/2021
2 answerWhy Debye shielding occur in plasmawhen we introduce a test charge?Does Debye shielding depends on test chargeWhen it is introduced in plasma?...
Asked on 07/16/2021 by Pritika
1 answerIn classical (say Hamiltonian) mechanics, adding a constant energy offset has no effect on the dynamics of the physical system. One way to understand this might be to understand that...
Asked on 07/16/2021
5 answerJust to preface, I admit I'm not a physicist, or even well-read on science-related things (though I do read articles from various aggregate sites and sometimes purchase New Scientist) but...
Asked on 07/16/2021 by Thermatix
1 answerI need to choose laser goggles to shield eyes against 678 (+/-8) nanometer laser (5mW power). The laser has a red beam. I found for example some goggles that are...
Asked on 07/16/2021 by coderworks
2 answerI calculated that the geodesics in a cone satisfy the following formula: $$r=frac{1}{Acos(omega phi + alpha)}.$$ The cone is parametrised by taking spherical coordinates and fixing $theta=theta_0$ such...
Asked on 07/16/2021
1 answerGet help from others!
Recent Answers
Recent Questions
© 2024 TransWikia.com. All rights reserved. Sites we Love: PCI Database, UKBizDB, Menu Kuliner, Sharing RPP