Physics Questions, Problems & Solutions : TransWikia.com ~ Page 736

Confusing situation in thrust and conservation of momentum

Imagine I am inside a lake of ideal incompressible, non-viscous fluid. I have a hollow frustrum-like structure with both ends open, basically a tube with one end of a larger...

Asked on 12/15/2020

4 answer

How to separate wavenumber $k$ into real and imaginary parts?

In $k^2 - frac{omega^2}{c_o^2} + (tau_{alpha} i omega)^{alpha} k^2 = 0$, $k$ is the wavenumber, $omega$ is angular frequency, others are constants. How can I separate the wavenumber $k$...

Asked on 12/15/2020 by park ning

1 answer

Can electric strength between two parallel plate be calculated by its given electric potential difference and distance?

The electric strength between two parallel plates does not depend on its separating distance, and only depend on the number of charges the two plates carried. Therefore $epsilon$ cannot be...

Asked on 12/15/2020 by JTing

1 answer

Is the change in mass during alpha decay a change in rest mass?

Energy is released in alpha decay as kinetic energy as the sum of the masses of the nuclei formed is less than the mass of the parent nucleus. However as...

Asked on 12/15/2020 by thisisaphysicsquestion

1 answer

When does a block of ice begin to float in itself?

A motivating example: A friend and I noticed a frozen water bottle melting at work and began to wonder - at what point in the melting process would the remaining...

Asked on 12/15/2020 by Matt H

2 answer

Pressure on walls due to streamlined flowing fluid

Let us suppose that a fluid is flowing through a pipe (fully filled) of uniform cross section. The fluid is ideal and hence must flow in a streamlined path and...

Asked on 12/15/2020

6 answer

Can Hubble law be explained by galaxies moving away from one point at random constant speeds?

Let’s put a lot of material points at coordinates (0,0).Let’s give them completely random velocities.Let’s evolve this system for some time t0. Let’s look at the system from...

Asked on 12/15/2020 by Kamil Szot

3 answer

Material heating from AC electromagnet

What material property decides how much will that material heat up when inside solenoid with alternating current applied to it? I am trying to research what type of ceramic will...

Asked on 12/15/2020 by wav scientist

1 answer

Is “reflecting back” an intrinsic property of water waves?

I have come across an interesting answer here on Physics SE which states that you get standing waves when you throw a rock in a lake, because of an...

Asked on 12/15/2020 by Roberto Valente

2 answer

The difference between Gibbs and grand canonical potentials

To my understanding, Helmholtz free energy is a measure of the amount of work a thermodynamical system can perform. Following the same reasoning Gibbs and Grand-canonical free energies measure the...

Asked on 12/15/2020 by yoni

1 answer

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