Physics Questions, Problems & Solutions : TransWikia.com ~ Page 277

About the angular momentum of the particle system relative to the center of mass reference

I know its correct expression:$L=sum_{i}^{n}left(vec{r_i}times m_ivec{v_i}right)$ But the textbook thinks:$vec{F_i}=frac{d}{dt}left(m_ivec{v_i}right)$,But the speed here is in the center of mass reference frame, I don’t think this is the real...

Asked on 06/07/2021

2 answer

Magnetic moment produced by a charge in translatory motion (with no orbital motion)

A moving charge produces a magnetic field, while its magnetic moment is given by$$mu = -gfrac{q}{2m}textbf{L}$$where, $g$ = gyromagnetic ratio, $q$ = charge, $m$...

Asked on 06/07/2021

0 answer

Does Hamiltonian including spin involves tensor products?

I'm trying to learn introductory QM from a book and I'm confused about how spin is incorporated into the formalism. From what I have gathered so far, the state of...

Asked on 06/07/2021 by Carson James

1 answer

Fermi "surface" at finite temperature and its measurement in the lab

As we increase the temperature, we know the sharp Fermi surface at zero temperature becomes smeared out at finite temperature $T>0$. (Just think of the Fermi-Dirac distribution, there will be...

Asked on 06/07/2021 by user32229

2 answer

Elegant way to find maximum range of a projectile launched from a height

A projectile is launched from a height of $h$ and the initial velocityof $sqrt{2ga}$. Find the maximum range achieved by the projectile in terms of $g$,...

Asked on 06/07/2021 by Teshan

1 answer

Do the atomic emission spectra provide supporting evidence for the wave or particle nature of electrons?

My textbook states that the observation that a electric current passing through a gas causes characteristic emission spectrum to be observed gives supporting evidence for the wave nature of electrons....

Asked on 06/07/2021 by Hypatia of Alexandria

1 answer

This clever device moves heavy rocks upwards against gravity using buoyancy. Where is 'the work' coming from to move the rocks upwards?

So I saw this machine whilst researching the pyramids, and I've become completely fascinated by it. It seems to beautifully demonstrate many of the conundrums of work done, but remains...

Asked on 06/07/2021 by phil0s0pher

1 answer

If gravitons travel through flat Minkowski spacetime why we don't feel a force acting on us when we move through a graviton condensate around a mass?

In string theory gravity is described by a condensate of a gravitons between (and around) masses, modeled in accordance with the interactions of the...

Asked on 06/07/2021

1 answer

What actually is a potential barrier in quantum mechanics?

I'm new to quantum mechanics, and I was wondering what actually is a potential barrier in quantum mechanics? I understand that it is similar in a way to a hill...

Asked on 06/07/2021 by nobody48sheldor

1 answer

How to estimate time to fall with air drag and variable density?

I would like to estimate the time that it takes for an object to fall if there is a quadratic drag force and a variable density. In a vacuum, the...

Asked on 06/07/2021

0 answer

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