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Physics : Recent Questions and Answers (Page 647)

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

Why does closing the left arm of the U-tube doesn't change the pressure?

The gif below is the exact experiment I did. I blowed some air in the left arm and When the liquid in the...

Asked on 01/16/2021

1 answer

Vectors and scalar product using the metric tensor - Coordinate transformation

The scalar product in special relativity is given by begin{equation} V cdot W = V^{mu} g_{ mu nu} W^{nu}end{equation}and the components of...

Asked on 01/16/2021 by TheoPhy

2 answer

Second order phase transitions and energy

Apologies if I am missing something simple here. We are all aware that a latent heat is associated with a 1st order phase transition. The heat released on...

Asked on 01/16/2021 by CGS

0 answer

Can the gravity of one entire galaxy slow down an astrophysical jet emitted from its central black hole?

Let say we are talking about our Milky way and Sagittarius A* emitted a astrophysical jet. If the galaxy was 150 000 ly wide would its gravity with dark matter...

Asked on 01/16/2021

1 answer

Path of a coin placed on a frictionless rotating disk

The torque of the disk is through its Center of massA coin is placed on the disk in r...

Asked on 01/16/2021 by AL vees

3 answer

Using air resistance (drag) in Python calculation

I am simulating a free fall with a function that needs to calculate the time it takes for a particular object to reach the surface, I got this program working...

Asked on 01/16/2021 by Casper A

1 answer

Why the one-dimensional wave equation is generated as the current format

The one-dimensional wave equation is $frac{partial^2 u}{partial t^2} = v^2 frac{partial^2 u}{partial x^2}$. The higher dimensional wave equation is $frac{partial^2 u}{partial t^2} = v^2 nabla^2 u $....

Asked on 01/16/2021 by CPW

0 answer

Just something I was thinking related to light travelling

Since we know that when we watch a star, we are watching it in a state it was before when the light started travelling from it. So suppose, I travel...

Asked on 01/16/2021 by Astro Falcon

2 answer

Kerson Huang statements about Bose-Einstein condensation

On the Kerson Huang statistical mechanics book I read, about the Bose Einstein condensate, that for temperatures higher than the condensing temperature the particles "spread thinly" over all levels and...

Asked on 01/16/2021 by Salmone

0 answer

Why is the contribution of a path in Feynmans path integral formalism $sim e^{(i/hbar)S[x(t)]}$?

In the book "Quantum Mechanics and Path Integrals" Feynman & Hibbs state thatthe probability $P(b,a)$ to go from point $x_a$ at time $t_a$ to the point ...

Asked on 01/16/2021 by asmaier

8 answer

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