Physics Questions, Problems & Solutions : TransWikia.com ~ Page 307

Why is the Lagrangian specifically a function of $v^2$?

I've been reading "L. D. Landau, E.M. Lifshitz - Mechanics (Volume 1)" and he justifies the fact that the Lagrangian is a function of $v^2$ with the fact that...

Asked on 05/26/2021 by 2 False

1 answer

How should one visualize the electric field formed from a point charge moving at constant velocity?

So we all know how the magnetic field looks like ( qv x r )While trying to visualize the electric field I got a little bit confused. Because we...

Asked on 05/26/2021 by Yarin Shani

0 answer

Is considering electron negatively charged just a convention?

If we interchange the charges ,i.e., proton as negative and electron as positive and everything else, what will happen? Is there any change in the laws of physics?...

Asked on 05/26/2021 by Vedant Chhapariya

1 answer

Wavefunction magnitudes being degenerate everywhere on parameter space even though energy degeneracies occur at isolated points?

Cross-posted here: https://mattermodeling.stackexchange.com/questions/4974/wavefunction-magnitudes-being-degenerate-everywhere-on-parameter-space-even-thou $$H(k,M)=-t sum_{delta} [cos(kcdotdelta)sigma_x-sin(kcdotdelta)sigma_y+Msigma_z],$$where $t$ is the hopping, $sigma_i$ are Pauli matrices, $delta$ lattice vectors and $M$ an on-site...

Asked on 05/26/2021

0 answer

Derivation of the probability of joint detection in Hong-Ou-Mandel interferometer

I read the Hong, Ou, Mandel. "Measurement of Subpicosecond Time Intervals between Two Photons by Interference", from PRL 59, 2044. Where the - now known as -...

Asked on 05/26/2021 by G Frazao

0 answer

How is conservation of energy addressed when an object reaches a hair outside of the event horizon, if time speed approaches zero?

My concern relates to Einstein's rock-down-a-well thought experiment. If Einstein drops a rock, it picks up velocity and gains in total energy. If an assistant at the bottom...

Asked on 05/26/2021 by Ralph Berger

2 answer

Does the unit of a quantity change if you take square root of it?

For example, I have a mass, m = 0.1kg and I square root it, giving me m = 0.316 (3s.f.) does the unit still stay as kg, or does it...

Asked on 05/26/2021 by Saras

5 answer

Diffusion of electromagnetic fields

In magnetotelluric method, inside earth EM field has diffusion equation as opposed to wave equation in air. Physically diffusion of atoms is intuitive. But what does...

Asked on 05/26/2021 by shul

1 answer

Finding the force acting on a fluid: compressible Navier-Stokes equation

The compressible Navier-Stokes equation is given by $$rho[frac{partialtextbf{v}}{partial t}+(textbf{v}cdotnabla)textbf{v}] = -nabla p +etaDeltatextbf{v}+[zeta+frac{eta}{3}]nabla(nablacdottextbf{v})$$ where $eta$ is dynamic viscosity and $zeta$ is the second viscosity. (This...

Asked on 05/26/2021 by GanTheMan

0 answer

Fusion: Why deuterium and tritium?

I would like to know why scientists try to use deuterium and tritium for fusion and not just the ordinary isotope of Hydrogen ${}^1H$? ...

Asked on 05/26/2021 by user34771

3 answer

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