Physics Questions, Problems & Solutions : TransWikia.com ~ Page 524

The relation between Chemical potential and Gibbs free energy ($nmu = G$) is global?

The change of Gibbs free energy (for a single phase or constitute system) is $$dG = -SdT + VdP +{mu}dn$$ By using the fact that $T$ and ...

Asked on 03/01/2021

1 answer

Will back emf supports flux change?

In an inductor, back emf is induced as there comes flux change. It is said that back emf decreases as time passes (when inductor is just connected to DC source)....

Asked on 03/01/2021

1 answer

Physical meaning of $F^{0nu}j_nu$

In my problem I showed that $F^{munu}j_nu$ is a contravariant 4-vector. Now the question is what is its 0-component's physical meaning, i.e. the meaning of $F^{0nu}j_nu$ if ...

Asked on 03/01/2021

1 answer

What is the difference between photons from an electron and photons from a proton?

So, I am trying to get my head 'round the workings of electromagnetism. Pretend I am 5 years old. Protons send out photons to electrons that cause the electrons to...

Asked on 03/01/2021

1 answer

Charge densities when placing a conductor or a dielectric material inside a capacitor

Assume there are two conducting infinite plates. They make up a capacitor - one plate has a charge density of $sigma$ and the other has a charge density of...

Asked on 03/01/2021 by EL_9

1 answer

Gauss Law for infinite objects - Components

For an infinite rod, the formula would be $E=2klambda/R$ using a cylinder. If we have a point in space and wanted to only calculate the $z$-component, I assume...

Asked on 03/01/2021 by Benice Hong

0 answer

Can I create squeezing with a $P^2$ interaction?

One approach to squeeze light is through the one-mode squeezing operator, which can be written as $e^{-i H t}$ with $H sim (a^2 - (a^dagger)^2)$. My question is,...

Asked on 03/01/2021 by m137

0 answer

How do spinors arise in systems of less than 3 effective spatial dimensions as representations of the Lorentz group?

In 3+1 Minkowski spacetime, we can use the fact that the Lie algebra of the Lorentz group decomposes (I am omitting some details here to keep it short) into ...

Asked on 03/01/2021 by TheQuantumMan

1 answer

What is definition of weight of person in elevator moving with acceleration?

I have a question, I need your help with understanding definitions. Let's recall the famous problem:What is the weight of the person mass m, if the elevator moving up with...

Asked on 03/01/2021 by Numenorean

2 answer

Pressure increases with increase in depth

Confusion in law of liquid pressure.Pressure increases with increase in depth from its free surface. So, does it mean that ...

Asked on 02/28/2021

2 answer

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