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Physics : Recent Questions and Answers (Page 625)

Find answers to your questions about Physics or help others by answering their Physics questions.

Is it possible to imagine a virtual displacement for a simple pendulum?

Because I could not understand the term "virtual displacement" properly I have too much questions with it. I will be helpful with your answer. My question: Can we imagine a...

Asked on 01/24/2021 by Arnab Maiti MAS

1 answer

Movement of free electrons

How can I understand the movement of free electrons in a conductor taking into account the quantam mechanical approach of electrons i.e. uncertainty of position and momentum etc. Does using...

Asked on 01/24/2021 by user237666

2 answer

Velocity waves in spherical geometries

I am currently working on velocity waves in spherical geometries: I am considering a 1D many-particle system confined on a circle with a global drift leading to rotations, similar to...

Asked on 01/24/2021 by Tom B

0 answer

Is there an index of common spectral lineshapes or table of common lineshape functions?

Is there an index of common spectral lineshapes in physics? Is there a program that automatically tries fitting to many different lineshapes? By line shape I mean the function...

Asked on 01/24/2021 by fyodrpetrovich

1 answer

Reference for one-loop photon propagator in the frame of the electroweak theory

Does anyone know any reference where the photon propagator is dimentionaly regularized to one-loop in the frame of electroweak theory (with vacuum polarization involving Faddeev-Popov ghosts and Goldstone bosons)?...

Asked on 01/24/2021

0 answer

Einstein's equivalence principle and acceleration due to rotation

Einstein's equivalence principle is often illustrated by pointing out that a person trapped in an elevator has no way of telling whether they are on the surface of the earth...

Asked on 01/24/2021

1 answer

Powering an electromagnet for a long duration

Looking to power an electromagnet requiring 12 DC volts at 4 Watts, and wondering what size battery I would require to do this for 4 weeks? My maths so far...

Asked on 01/24/2021

3 answer

Enthalpy of Ideal Monoatomic, Diatomic and Triatomic gases

We learnt today that in ideal gases (triatomic as an eg), we can find the internal energy, and their specific heats for constant pressure and volume u=3RT Differentiating with Temperature...

Asked on 01/24/2021

0 answer

How to calculate functional derivative correctly?

Let $phi$ be a real scalar field and $J$ an arbitrary source function. Consider$$S_{E}[phi, J]=int d^{4} xleft[frac{1}{2}(partial_{mu} phi)(partial^{mu}phi)+frac{1}{2} m^{2} phi^{2}+V(phi)-J(x) phi(x)right].$$I would like to...

Asked on 01/24/2021

3 answer

Coaxial cable with infinite return conductor

If a coaxial cable has a coaxial return conductor with infinite outer radius, will the return conductor experience a voltage build-up due to current flowing through it, or will it...

Asked on 01/24/2021 by electro_h

1 answer

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