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Physics : Recent Questions and Answers (Page 781)

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

Can the initial wavefunction be any function?

Knowing the wavefunction $Psi(x,y,z,0)$ is enough to know the functions for $frac{partial^2Psi(x,y,z,0)}{partial{x^2}}$, $frac{partial^2Psi(x,y,z,0)}{partial{y^2}}$, $frac{partial^2Psi(x,y,z,0)}{partial{z^2}}$, seeing as how they are second derivatives of the wavefunction with respect...

Asked on 11/29/2020 by Anders Gustafson

2 answer

How does a magnet cause magnetic force and its magnitude/direction?

Magnetic fields are created due to electron spin in the magnet. But how exactly does an electron "spinning" create forces around the magnet? Also, the magnetic force on a charge...

Asked on 11/29/2020 by carbenoid

2 answer

Is there a method to "decompress" acceleration scalar?

Is there a method to "decompress" the acceleration scalar? For example, I am computing the scalar as:$sqrt{a_x^2 + a_y^2 + a_z^2}$where $a_x, a_y$ and $a_z$...

Asked on 11/29/2020 by GK89

1 answer

Limit speed of a whip in vacuum

Inspired by this answer, I want to ask what is going to limit the speed of the tip of a whip in a vacuum? From my understanding, on Earth...

Asked on 11/29/2020 by Nick The Dick

0 answer

Why does Hartree-Fock work so well?

Why does the Hartree-Fock method for electronic structure work so well for atoms? More specifically, why is the "correlation energy" a relatively small component of an atom's (ground state) energy?...

Asked on 11/29/2020 by creillyucla

1 answer

Expression for a Distance in Ptolemaic Epicycles

I'm studying the geocentric Ptolemaic model of an upper Planet. My goal is an expression of the (squared) distance of $h$ from the planet to Earth, depending on the...

Asked on 11/29/2020 by Joe_base

0 answer

Does introducing a gauge field into the complex scalar field theory Lagrangian change its dynamics?

I've been reading Lancaster & Blundell, and in Chapter 14 they focus on the Lagrangian$$mathcal{L}=(partial^mupsi)^dagger(partial_mupsi) - m^2psi^daggerpsi.$$To impose invariance to the transformation $psirightarrowpsiexp(ialpha(x))$, where...

Asked on 11/29/2020 by dsfkgjn

2 answer

Exercises with solutions in dimensional analysis - reference request

I am currently trying to brush up on my skills in dimensional analysis, and computing with units. Is there a good source of worked examples, and exercises with solutions? I'd...

Asked on 11/29/2020 by harlekin

1 answer

Coupled Ricci scalar action

In the action where the Ricci curvature couples with the field $B^{mu}$: $$S=int d^4xsqrt{-g}left(-frac14F_{munu}F^{munu}+V(B_{sigma}B^{sigma}) +Rlambda B_{mu}B^{mu}right)$$ To obtain the equations for the field $B^{mu}$ I did the...

Asked on 11/29/2020 by MicrosoftBruh

2 answer

What is Coupling factor in terms of frequency

How is C defined in terms fo frequency? So the power gain of a resonator ring is : $$text{Power Gain}=frac{C^2}{|1-Tsqrt{1-C^2}|^2}$$ $C =$ coupling factor,$T =$ attenuation....

Asked on 11/29/2020 by futball11

0 answer

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