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Physics : Recent Questions and Answers (Page 527)

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

How to derive the bank angle of an aircraft from its roll angle and pitch angle?

From Young (2017) (https://onlinelibrary.wiley.com/doi/book/10.1002/9781118534786) it is stated that we can define the bank angle ($Phi$) of an aircraft as the angle between its Y body axis...

Asked on 02/28/2021 by James Kempton

1 answer

Magnetomotive force intuitive definition

Can somebody give me an intuitive feeling for the term "magnetomotive force"? I don't need equation and all that....

Asked on 02/28/2021

0 answer

Significance of the second focus in elliptical orbits

1.In classical mechanics, using Newton's laws, the ellipticity of orbits is derived. It is also said that the center of mass is at one of the foci. 2.Each body...

Asked on 02/28/2021

3 answer

What does it mean for a system to be in its ground state?

From the measurement postulate, we are told that every observable quantity is represented by a Hermitian operator $textbf{A}$, where the eigenvalues of said operator gives the possible measurement outcomes....

Asked on 02/27/2021 by C W

1 answer

Distribution of weight among massless strings hanging a rod of uniform density

Let the mass of a rod of uniform density be $W$ and its length be $l$. Several massless strings have been used to hang the rod at positions...

Asked on 02/27/2021 by Hoque

0 answer

Measuring resistance of a resistor - what to do with multiple readings

So I want to measure the resistance of an unknown resistor. My setup is shown with the circuit diagram and I use the variable resistor to collect a range of...

Asked on 02/27/2021

2 answer

Making sense of cavity in a 3 ropes system

I fail to understand why cavity resonance happens. Let's say for the sake of example we have 3 ropes, the first and the last half-infinite and the middle one is...

Asked on 02/27/2021

0 answer

When in $T rightarrow infty$ the eigenstates that contribute the most are the ones that lie in the middle of the spectrum?

Is the following intuition correct? Consider a 1D Ising model of length $N$ in a heat bath with inverse temperature $beta$ (i.e. a canonical ensemble). The Boltzmann factor...

Asked on 02/27/2021

1 answer

Physical intepretation of nodes in quantum mechanics

I am taking my second course in QM, and my head is starting to spin as it probably should.But I would very much like to clear up my head...

Asked on 02/27/2021

2 answer

Quantum gravity in affine picture

I am studying an article which is about quantum gravity (M. Martellini, "Quantum Gravity in the Eddington Purely Affine Picture," Phys. Rev. D 29 (1984) 2746). I...

Asked on 02/27/2021 by Honneur

0 answer

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