Physics Questions, Problems & Solutions : TransWikia.com ~ Page 281

How we get sense of direction from faraday's law while it as a whole is scalar?

I'm referring to Maxwell's third equationIf we assume direction of existing magnetic field i.e. M.F due to magnet as positive then if I look at Right hand side of...

Asked on 06/06/2021 by Manik Singh

1 answer

When do angular momenta decouple again?

If we have two angular momenta, $j_1$ and $j_2$, which couple to the total angular momentum $J$, we can choose between two sets of basis systems,...

Asked on 06/06/2021 by ersbygre1

1 answer

Why is the slope of pressure and volume almost zero below critical point for liquefaction of gas?

Image shows the Andrews isotherms regarding liquefaction of gases. Why is the $PV$ curve almost horizontal from point ...

Asked on 06/06/2021

3 answer

Heat capacity from phonon dispersion curves

I have phonon dispersion curves for a crystal with two atoms per unit cell.The following figure is phonon dispersion curves for the same crystal as above. $q_{BZ}$ denotes...

Asked on 06/06/2021

2 answer

Difference between cross section and probability of interaction

When I read some textbooks I find that the definition of cross section is theprobability. Of incident neutron interact with a matter .but I find many other (cross section...

Asked on 06/06/2021 by Abdallahchaibeddrraa

1 answer

Usage of Lagrangian not Lagrangian density for quantum string in Polchinski

In section 1.3 p. 18 while working out the energy spectrum of quantum string Polchinski uses Lagrangian instead of Lagrangian density while in QFT the usual convention...

Asked on 06/06/2021

1 answer

Wave Function for a Step Potential

If we sole the TISWE, and if energy or the particle lies between 0<E<V. If we do the calculation, Transmission coefficient (T) comes out to be zero. I get that...

Asked on 06/06/2021

1 answer

Is rigid body rotation an integrable problem?

Is there chaos? The configuration space is 3d. There are four constraints, namely, the energy, the three components of the angular momentum. So there are still two degrees...

Asked on 06/05/2021 by poisson

1 answer

Why do we say we "drop" perpendicular lines

I often see problems or hear people talk about problems where they say that one "drops" a perpendicular line. This YouTube video at 9:30 https://www.youtube.com/watch?v=GKYBX3KM7CY specifically prompted...

Asked on 06/05/2021

0 answer

Kirchhoff's Voltage Law does not hold for a free source RC circuit?

Say I have a simple free source RC as depicted in the image below. The capacitor initially has a charge of Q on its positive plate and at time t=0...

Asked on 06/05/2021

1 answer

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