Physics Questions, Problems & Solutions : TransWikia.com ~ Page 242

When to use (and when not to use) electromagnetic field conjugates in variational formulations

I found something a little bit confusing about writing variational formulas or Lagrangians for electromagnetic fields. I was looking at the book by Schwinger and Milton (chapter...

Asked on 06/23/2021

0 answer

Why don’t we feel weightless on airplanes?

If we feel weightless because there is no contact force acting on our bodies. Then why are there no contact forces for people in the international space station but there...

Asked on 06/23/2021

5 answer

Difference between two branches of $D^0$ decay

I'm trying to understand the following decays: i) $D^0 rightarrow K^- + pi^+$ ii) $D^0 rightarrow K^+ + pi^-$ The question came from Griffiths' "Introduction to Elementary Particles",...

Asked on 06/23/2021 by Lincon Ribeiro

1 answer

How to correctly imagine a quantum particle, what does it look like?

I am a student, besides, only in the first year, so I apologize if the question seems stupid. How can you imagine a quantum particle, like an electron? This is...

Asked on 06/23/2021

2 answer

Adiabatic Invariant in Variable Mass Oscillator

Suppose you have an harmonic oscillator whose mass is adiabatically changing such that $Tfrac{dm}{dt}ll m$ where $T$ is the period of the motion. It could for example be...

Asked on 06/22/2021

1 answer

Is this solution for interstellar travel viable?

I have in mind a way to enable FTL travel. Is this way viable? In the paper:"Weighing the vacuum with the Archimedes experiment" we can see...

Asked on 06/22/2021 by Giovanni Cambria

2 answer

Is it possible to use the Navier-Stokes equation for solid simulation?

I had a PhD interview yesterday. One of the faculty asked me if it is possible to use a modified version of the Navier-Stokes equation for solid simulation, knowing that...

Asked on 06/22/2021 by Prakhar Sharma

1 answer

Why doesn't the spin-orbit coupling term in the Hamiltonian have to be Hermitian?

I am currently looking at a paper (C. Ortix, "Quantum mechanics of a spin-orbit coupled electron constrained to a space curve", Phys. Rev. B 91 (2015) 245412,...

Asked on 06/22/2021 by a physics student

2 answer

Reason for particular pattern of clouds near sun

In this picture it is clear that there is a larger no. Of clouds...

Asked on 06/22/2021

1 answer

Difficulty in theoretical understanding of Newton's law of cooling

Newton’s law of cooling states that the rate of heat loss of a body is directly proportional to thedifference between the body’s temperature and that of the surroundings when...

Asked on 06/22/2021

2 answer

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