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Physics : Recent Questions and Answers (Page 170)

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

Motion of a magnet inside a solenoid

I have a homework problem where a bar magnet is placed halfway inside a horizontal solenoid. A cut away shows that the magnet's north pole points to the left of...

Asked on 07/21/2021 by StupidQuestionsGuy

1 answer

What is the physical meaning of frequency in the wave concept?

Treating light as a wave, we define its frequency. We see that light with different frequency have different colour. But, why? In wave, what property or physical meaning does...

Asked on 07/21/2021

4 answer

Matrix product state representation for the "infinitely repulsive hardcore boson" state

Consider a one-dimensional spin-1/2 chain with $N$ spins, and let $|psirangle$ be the equal weight superposition of all states with no adjacent spin-ups, e.g.for $N=3$ with...

Asked on 07/21/2021

1 answer

Why is the frame attached on the Earth non-inertial in General Relativity? ( neglecting rotations etc..)

The EEP says that freely falling frames are inertial. But suppose the freely falling frame is at some spacetime point. At that point you can by a suitable coordinate transformation...

Asked on 07/21/2021

2 answer

Far field of accelerating charge

What are the differences between the far field of an accelerating charge in a periodic motion compared to that of a uniformly accelerating charge. As the periodic motiom has omega...

Asked on 07/21/2021

0 answer

Global mathematical structure of QFT

"Classical" gauge theories (e.g. electrodynamics combined with quantum mechanics) have the following global description:$A_{mu}$ is a connection in a principle bundleThe matter fields are sections in an associated bundleIf...

Asked on 07/21/2021

0 answer

Definition of RMS deviations from mean w.r.t. $|u(x,0)|^2$ and $|A(k)|^2$ in Jackson

In chapter 7 of Jackson’s Classical Electrodynamics (page 323) he speaks of ‘‘rms deviations from mean, $Delta x$ and $Delta k$, defined with respect to $|u(x,0)|^2$ and...

Asked on 07/21/2021 by Y2H

1 answer

Is it possible that a satellite rotates planet infinitely without air resistance?

I am ignorant of physics besides college, and I would like to know if it is possible that a moon rotates its mother planet for an infinite time assuming there...

Asked on 07/21/2021 by Paul Pogba

1 answer

Matrices belonging to restricted Lorentz group $SO^+(1,3)$

My Professor says that all members of the restricted Lorentz group $SO^+(1,3)$ may be written as $e^Gamma$, where$$ Gamma^{mu}{}_{nu}=Lambda^{mu rho} eta_{rho nu}.$$Here...

Asked on 07/21/2021 by user100570

1 answer

Can electron-degenerate copper be produced in the lab?

The pressure needed for copper to reach it’s electron degeneracy pressure is 40 GPa, while pressure’s above 100 GPa can be produced with a diamond anvil. As such, have such...

Asked on 07/21/2021

0 answer

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