Physics Questions, Problems & Solutions : TransWikia.com ~ Page 298

Angular speed of the planets

Do all the planets in our solar system have the same angular speed? Physics teacher says yes, my research is not crystal clear. I want to make sure...

Asked on 05/30/2021 by user37829

2 answer

Where does the energy come from, by only using a capacitor and the lorentzforce?

Me and the boys can't explain the following construction: A capacitor with a hole in both plates is charged and an electron is accelerated in it. So the electrons potential...

Asked on 05/30/2021 by Drake Mass

2 answer

Why does $mathrm{d}phi' = mathrm{d}phi$ in the derivation of Lorentz transformation of Solid angles?

Let $O$ and $O'$ be two inertial frames where $O'$ moves with velocity $v$ relative to $O$ along the $+x$ direction. A light beam...

Asked on 05/30/2021 by Ze Chen

0 answer

Canonical Transformation in Quantum Phase Space

I am looking for a unitary representation $hat T$ of the following canonical transformation begin{align}q_1&rightarrow q_2 &p_1&rightarrow p_2q_2 &rightarrow -q_1&p_2&rightarrow -p_1end{align} which is a 90°-rotation...

Asked on 05/30/2021

1 answer

How to view thermal spacetime in "Minkowski" picture?

For things such as the Page-Hawking phase transition, we perform a Wick rotation, and consider the Free energy of the metric of a Black Hole in AdS (which has a...

Asked on 05/30/2021 by Frotaur

0 answer

Meaning of slow-roll inflation and quintessence

I'm currently reading around the topic of quintessence and other models for dark energy and was hoping someone could explain to me what is meant by slow-roll in terms of...

Asked on 05/30/2021

1 answer

Charge Conjugation to Analyze CPT Invariance

Source: http://hyperphysics.phy-astr.gsu.edu/hbase/Particles/cpt.html#:~:text=Charge%20conjugation(C)%3A%20reversing,like%20momentum%20and%20angular%20momentum. In the image below, reaction (1) shows CP conservation whereas reaction (2) does not. Does this have to do with the fact that the charge...

Asked on 05/30/2021

1 answer

Magnetic Field Induced by Current in Space

I'm learning about how a current in a wire can create a magnetic field, here is the diagram I see: ...

Asked on 05/30/2021 by cuppajoeman

2 answer

The commutation of translation operator with Hamiltonian under electromagnetic field

The book "Introduction to Solid-state" by Madelung gives the commutation of translation operator with Hamiltonian under an electromagnetic field in section 2.2.9 . The Hamiltonian is $$H=frac{1}{2 m}(p+e A)^{2}+V(r)+e...

Asked on 05/30/2021 by Zz Lin

1 answer

How to find the direction of the magnetic field in a toroidal inductor?

I drew sort of a picture down below (although the cell is supposed to be an ac supply). I don't...

Asked on 05/30/2021

2 answer

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