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Physics : Recent Questions and Answers (Page 646)

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

Does a magnetic field always have rotational symmetry?

Does a magnetic field always have rotational symmetry? If not, would someone mind giving me an example?...

Asked on 01/17/2021 by Marlon Namekaze Brade

1 answer

Acceleration in polar coordinates and fictitious forces

On the one hand, we can express the acceleration $vec{a}$ of some mass in polar coordinates as:$$ vec{ddot{r}} = ({ddot{r}}-rdot{theta}^2)hat{r} + (rddot{theta}+2dot{r}{dot{theta}})hat{theta}$$On the other hand, from...

Asked on 01/17/2021

0 answer

How to find wavepacket time dependence from the $k$-wavefunction?

I am trying to code the time dependence of a gaussian wavepacket using the Fourier transform techniques. I began with constructing a wavepacket (real parts only at the moment) at...

Asked on 01/17/2021 by FeelsToWaltz

1 answer

Relativity and Current in Wire

If an observer is stationary relative to a current-carrying wire in which electrons are moving, why does the observer measure the density of moving electrons to be the same as...

Asked on 01/17/2021 by randomstring

7 answer

How to obtain large order perturbation series for cubic anharmonic oscillator?

Consider the potential $$V(x)= frac{x^2}{2} + gx^3.tag{1}$$ Then the time-independent Schrödinger equation becomes $$left(-frac{1}{2}frac{d^2}{dx^2} + frac{x^2}{2} + gx^3 right)psi = E(g) psi.tag{2}$$ Where $E(g)$ is the energy...

Asked on 01/17/2021 by Suroj Dey

4 answer

Can electric field be negative?

According to the equation , $$E = kQ/r^2$$ If the source charge is...

Asked on 01/17/2021 by susan J

7 answer

Is it possible to find the ground state of interacting $phi^{4}$ theory with quartic interaction analytically?

Is it possible to find the ground state of interacting $phi^4$ theory with quartic interaction analytically?...

Asked on 01/17/2021 by Heisenberg

3 answer

How do voltage and voltage drops over a circuit relate to work done?

I have a few remaining uncertainties when it comes to voltage. I numbered the paragraphs in my thought sequence for easier reference.In a series circuit, I know voltage is the...

Asked on 01/17/2021 by user1299028

3 answer

How does the ionic radius influence the ion's interaction?

What can we deduce about an ion, its interaction or the structure it is in, based on the ionic radius? My understanding of the concept of the ionic radius is...

Asked on 01/17/2021

0 answer

Help me to understand the time component of mass

Mass = Force / acceleration (in this one the speed is changing through acceleration)andMass = Energy / $c^2$ (in this one the speed is...

Asked on 01/17/2021

3 answer

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