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Physics : Recent Questions and Answers (Page 299)

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

Change in length of the body immersed in a fluid

When part of a body is submerged in a fluid of density D1 in a container accelerating with accln 'a' . Why wouldn't the length decrease? My professor already told...

Asked on 05/30/2021

0 answer

The interaction of an ion with all ions in KCL crystal structure deducing its relationship as $?_? = −|?| ? ^2 /? + ? ?_? / ?^?$

please, if someone can answer this question?deduce the relationship of the interaction of an ion with all ions in KCL crystal structure as $?_? = −|?| ...

Asked on 05/30/2021 by FERASS HİLAL

0 answer

Identical particle state with spin

We construct identical particle state by symmetrizing or antisymmetrizing the tensor product of single partice states. When considering spin, a two fermions state should be $$|psirangle=frac{1}{sqrt{2}}(|psi_1rangle_{sigma_1}otimes|psi_2rangle_{sigma_2}-|psi_2rangle_{sigma_2}otimes|psi_1rangle_{sigma_1}),$$ where $|psi_1rangle_{sigma_1}=|psi_1rangleotimes|sigma_1rangle$....

Asked on 05/30/2021 by Daniel YUE

2 answer

What are the "frustrated rotations" of molecules?

What are the frustrated rotation of molecules and how is this any different from the normal rotation of molecules? This question originated from reading: A promising diagnostic...

Asked on 05/30/2021

0 answer

Can tablets/capsules bounce?

I'm doing a physics lab on rotational motion tomorrow and I wanted to know whether a capsule-shaped object (other than a tic-tac, i.e. a capsule/pill, since I don't have tic...

Asked on 05/30/2021 by physics35

0 answer

High velocity particles in the thermosphere

I do not understand why XUV absorption in the thermosphere leads to high velocities. When I do the calculations on a sheet of paper (momentum and energy) I find that...

Asked on 05/30/2021 by Cesare

1 answer

Contradiction in phase of reflected longitudinal waves

While studying the fundamentals of sound waves in organ pipe, I noted that the fact about phase of reflected waves is contradicting while referring multiple sources This book of mine...

Asked on 05/30/2021

2 answer

Definition of linear and non-linear dynamic susceptibility

This question originates from the definition of linear and non-linear dynamic susceptibility in Uwe Tauber’s book “Critical Dynamics: A Field Theory Approach to Equilibrium and Non-Equilibrium Scaling...

Asked on 05/30/2021 by FaDA

1 answer

Mean value of projection operator

In an orthonormal eigenbasis ${ left|psi_1rightrangle , left|psi_2rightrangle}$ of the Hamiltonian operator $hat{H}$ we have the projection operator: $$ hat{mathbb{P}} = prod_{i neq j} left( frac{hat{H} -...

Asked on 05/30/2021

1 answer

Does inducing charge on a grounded conductor do work?

Imagine a grounded conductor as an plane of infinite area. If I bring a charge to a close proximity to the plane, it induces some charge distribution on the conductor....

Asked on 05/29/2021 by kalkanistovinko

2 answer

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