Find answers to your questions about Physics or help others by answering their Physics questions.
I was working on problem 10.6 of the book "Problem Book in Relativity and Gravitation by A. Lightman, R. H. Price" where we derive the following equation for killing vectors:...
Asked on 12/31/2020
1 answerLet's say that I held a hot object with a warm cloth. It instantly feels less hot and only warm to the touch. This is because the cloth is an...
Asked on 12/31/2020 by Skeleton Bow
8 answerIn quantum Brownian motion, bosonic/harmonic oscillator bath and interaction described by Hamiltonian $$H_B = sum_{n}hbaromega_n(b_n^dagger b_n) \H_I = -sigma_x otimes B$$ and $$ B =...
Asked on 12/31/2020 by Hezzuappu
1 answerSuppose we have a system that has discrete energy levels (e.g. hydrogen atom, potential well) and the stationary solutions for the wave function are $psi_n$. I would assume that...
Asked on 12/31/2020 by Victor Palea
1 answerI have two questions regarding chapter 2 of Landau & Liftshitz "Mechanics", on page 14-15. Regarding homogeneity of time, we have: $L$ is a closed system therefore $L$...
Asked on 12/31/2020 by Z. Huang
2 answerIn this article (here) it says that unstable particles can be represented as a stable superposition of the decay products. It says this representation is most relevant...
Asked on 12/31/2020
0 answerInternal energy at a specific state can't be calculated, but using kinetic theory of gases and the law of equipartition of energy, average kinetic energy is directly proportional to temperature....
Asked on 12/31/2020 by Leela Prathap
2 answerDoes the concept of strong coupling mean anything in a classical setting? If strong coupling means just an inability to apply perturbative methods to the Hamiltonian, then obviously yes, we...
Asked on 12/31/2020 by user27549
3 answerSome weather stations offer the possibility to query the wind direction measurement values in the range [0,540[ in addition to the regular [0,360[. The extended range is supposed to reduce...
Asked on 12/31/2020 by rockfort
0 answerI'm trying to understand the concepts of mechanical impedance and dynamic stiffness, what do they mean and if/how they differ. Consider the very simple system below: ...
Asked on 12/31/2020
0 answerGet help from others!
Recent Answers
Recent Questions
© 2024 TransWikia.com. All rights reserved. Sites we Love: PCI Database, UKBizDB, Menu Kuliner, Sharing RPP