Physics Questions, Problems & Solutions : TransWikia.com ~ Page 553

Beaker and suspended ball weight measured by spring balance

Can someone explain to me why when we suspended a ball with a density greater than that of water in water by the help of a string why is the...

Asked on 02/18/2021 by Naruto Uchiha

3 answer

Minimum detectable signal of base station in free space

I am studying for tomorrow's exam (Communication Systems, part of Computer Science course), and I've run into this question which involves some radio propagation physics. That's why I decided to...

Asked on 02/18/2021 by Quentin James

0 answer

Relationship between pressure and temperature

https://youtu.be/JzuamK0AyC4 According to this clip’s experiment, if the temperature of the third bottle increases, which raises the pressure, the water from the second bottle will then rise...

Asked on 02/18/2021

1 answer

Why should all species of elementary fermions have the same spin angular momentum?

Is there any deeper motivation behind the fact that all elementary fermions have the same exact amount of spin angular momentum ($frac{sqrt3}{2}hbar$ total or $frac12hbar$ projected) or is...

Asked on 02/18/2021 by Adam Herbst

0 answer

Would two objects orbiting each other emit gravitational waves on every direction or only on their plane of rotation?

Imagine a system where two massive objects are orbiting each other, something like a binary black hole or neutron star system. Such a system should emit gravitational waves. I'm curious...

Asked on 02/18/2021 by Ray Arifin

2 answer

Calculating the differential equation associated with an LC circuit

Looking at the above diagram I know that the current associated with a capacitor...

Asked on 02/18/2021 by NahPlsMan

3 answer

Theoretical question about waves and interference

Assume I’m given a standing wave function and I’m asked to find the phase velocity of the two waves that interfered and created the standing wave.Now, I have two...

Asked on 02/18/2021

2 answer

Physical basis for arrow of time

If laws of physics are time symmetric, is motion forwards and backwards in time only defined in terms of increase or decrease in entropy (low entropy is past and High...

Asked on 02/18/2021 by user282253

3 answer

What is the physical description and $E$-$k$ plots for Dirac Semimetal, Weyl Semimetal, and Magnetic Weyl Semimetal?

I've been trying to get a physical understanding of these three concepts, and any help would be appreciated. So far this is what I understand:Dirac semi-metals have relativistic quasi-particles (with...

Asked on 02/18/2021 by Black Bear

1 answer

Why is the carrier diffusion neglected as a consequence of a greater penetration depth of the photoexcitation light?

"Since the diffusion lengths are considerably smaller than the penetration depth of the photoexcitation light (...), we can neglect carrier diffusion from our considerations" - THz article...

Asked on 02/18/2021

1 answer

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