Physics Questions, Problems & Solutions : TransWikia.com ~ Page 797

Accelerating observers in special relativity

In Hobson's General Relativity book, pg. 125, it says that an instantaneous rest frame $S'$ can be defined for an accelerating observer in frame $S$...

Asked on 11/19/2020

2 answer

Entropic force in polymers

According to my textbook, the elastic force in a rubber is caused to the tendency of the polymers to return to their initial disordered state of higher entropy. But...

Asked on 11/19/2020

1 answer

Two different astronomical motions combined give a receding velocity greater than 'c' but with different effect on an observer

Let say a gallaxy is 15 billion light years away from us so the receding velocity caused by Hubble flow is more than speed of light which affects the relative...

Asked on 11/19/2020 by Janko Bradvica

0 answer

Time-independent Klein-Gordon PDE

Given the KG PDE: $$psi_{tt} - psi_{xx} + m^2 psi = 0.$$ Wikipedia describes the time-independent variant of this as just setting $psi_{tt}=0$. My question is this: For...

Asked on 11/19/2020 by Jepsilon

3 answer

Conditions for water to go down from high places

I've noticed that all of the above-ceiling water tanks are piped in away that ensures to be open to the air at the tank, and then these ...

Asked on 11/18/2020 by user12479

1 answer

Question about the Dirac adjoint and Feynman slash notation

I was trying to prove the identity $overline{displaystyle{not}{a}displaystyle{not}{b}dots displaystyle{not}{p}} = displaystyle{not}{p}dots displaystyle{not}{b}displaystyle{not}{a}$. On simplifying the LHS I end up with $ overline{ displaystyle{not}{p}^{}} dots overline{ displaystyle{not}{b}^{}} overline{...

Asked on 11/18/2020 by A quarky name

1 answer

What is the amount of mass ($rm kg$) that the Sun loses daily in the irradiation form?

I had difficulties to post my question because the system asks me to detail my need more. Is it necessary? Doesn't my question make sense? There is no need to...

Asked on 11/18/2020 by João Bosco

1 answer

How can I calculate the $D$ field when all the free charge is on a conductor embedded in a dielectric?

Let $K$ be a bounded piece of conductor, embedded in an isotropic, homogeneous, uniform dielectric of permittivity $epsilon$. Let $ vec r$ be a point in the...

Asked on 11/18/2020 by Moca Aoba

0 answer

Taylor expansion of charge density in Jackson's book

I am learning from Jackson (3r edition), where I found one concept very confusing, that is Taylor expansion of charge density. (This is given in section "1.7 Poisson and Laplace...

Asked on 11/18/2020 by anbhadane

1 answer

How can we detect antihydrogen?

From a mathematical standpoint (CPT symmetry) it is most probable that antihydrogen has the same spectra (absorption and emission) as hydrogen. The CERN confirmed...

Asked on 11/17/2020

2 answer

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