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Physics : Recent Questions and Answers (Page 132)

Find answers to your questions about Physics or help others by answering their Physics questions.

Rarita-Schwinger spin projection operators

Chapter 2 of the paper Symmetry of massive Rarita-Schwinger fields by T. Pilling mentions "the usual" spin projection operators. However, to me, they are...

Asked on 08/06/2021

0 answer

Frequency of a Tuning Fork

Question: Which of the following affect the frequency of a tuning fork?Tine stiffnessTine lengthThe force with which it's struckDensity of the surrounding airTemperature of the surrounding airAnswer Attempt: Based on...

Asked on 08/06/2021 by YadaY

4 answer

Does turbulence increase with radius or decrease

IV lines must be regularly ‘flushed’ to avoid infection and line occlusion. More turbulent flushing better removes any particles attached to a catheter wall, which decreases chances of complications. Which...

Asked on 08/06/2021

3 answer

Feynman rules for Nucleon-Nucleon Interaction with Tensor Coupling

Hello im trying to Compute the Cross section of an elastic Nucleon-Nucleon scattering and i don't know what to make of the following Lagrangian:begin{equation}mathcal{L}_{rho N N}=-g_{rho} bar{psi}...

Asked on 08/06/2021

0 answer

Problem with the formula for electric intensity due to a charged sheet

The formula for the electric field due to a charged sheet is $LARGEfrac{sigma}{2epsilon_0}$. Now, if I want to find the electric intensity of a point between two equally and...

Asked on 08/06/2021

2 answer

Why particles can have different number of degree of freedom in a 3D + 1T dimension?

Air molecule has $6$ degrees of freedoms: it can move up & down, left & right, front & back, rotate along $x$-axis, $y$-axis, $z$-axis. But I...

Asked on 08/06/2021

1 answer

Contradiction about thermodynamic system

While watching this tutorial, Thermodynamic system is defined as a macroscopic region of the continuous medium, always formed by the same collection of continuous matter (material...

Asked on 08/06/2021

0 answer

S-wave reonances of $V(r)=-c^2(r+1/r)^2, c in Re$

I need to know the s-wave resonances of the central potential $V(r)=-c^2(r+1/r)^2, cin Re$. Here we have a well attached to a barrier so we expect quantized quasibound/ metastable/...

Asked on 08/06/2021 by Z Ahmed

0 answer

Can water produce light when heated?

I am asking this regarding blackbody radiation. Water is not black, obviously. I read it is very lightly blue, but it is mostly transparent in liquid form so it probably...

Asked on 08/06/2021

1 answer

How bright are Earth's VHF transmissions compared to our sun?

The Sun is a black (ish) body, so it must be emitting all of the kinds of radiation below visible, right into the VHF. But how much VHF radiation is...

Asked on 08/06/2021 by enigmaticPhysicist

0 answer

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