Physics Questions, Problems & Solutions : TransWikia.com ~ Page 150

Are the gravitational mass and inertial mass different qualities of a particle?

I can't understand how the same quality like mass can have different way to be defined. Is mass a quality that resist the movement of a particle in space (inertial...

Asked on 07/30/2021 by Luminous

0 answer

Why are Maxwell's equations correct and not Newton's laws of motion?

In many books, while introducing Special relativity it is shown that Maxwell's equations are not consistent with Galilean transformations. So either Galilean transformations (and consequently Newton's Laws) are false or...

Asked on 07/30/2021

4 answer

How does the fractional Fourier transform apply to an out-of-focus imaging system? Do we use the fractional distance to the focal plane?

In Fourier optics it is sometimes convenient to think of lenses as "Fourier transformers". For an imaging system between two planes with a pupil in the center,...

Asked on 07/30/2021

0 answer

Basic question about valence/conduction bands

In most introductions to solid state physics that I've read, they explain the origin, basically, of the band gap as follows: By doing a superposition of the standing waves inside...

Asked on 07/30/2021 by user103984

1 answer

Speed of Voyager 1

I was reading Wikipedia which stated ....Voyager 1's current relative velocity is 17.062 km/s, or 61,452 kilometres per hour (38,185 mph).....It travels away from sun. So sun's gravity must...

Asked on 07/29/2021 by Vinoth Kumar C M

3 answer

Is dark energy (like) normal energy?

I know that the term 'dark' is used because a) dark matter does not interact with light b) we know so little about them. Dark matter I guess could be...

Asked on 07/29/2021

2 answer

Would heating and cooling a ferromagnetic material allow it to more easily take on a magnetic field

I'm trying to magnetize various objects, such that they take on a strong magnetic field. Theoretically, magnetism is caused by aligning electrons such that they stay more or less...

Asked on 07/29/2021

2 answer

Does molten potassium wet steel?

I'm designing a device that uses molten potassium in steel pipes. If the device cools, the potassium will solidify and shrink, and if it's adhered strongly to the pipes I'm...

Asked on 07/29/2021

1 answer

What was Feynman talking about?

There's a bit in the Feynman lectures about deriving the 2nd law, quoted below.The details seem a bit off - as far as I know the Celsius scale was...

Asked on 07/29/2021 by jeremy_rutman

0 answer

How to derive the linear form of Pfaffian equation?

I am working on fundamental dynamics in last few days. The question is about Pfaffian constraint. A general form of Pfaffian constraint is$$ A(q)^{mathrm{T}}d{q} + b(q)dt = 0tag{1}$$...

Asked on 07/29/2021 by MakeItGreatAgain

1 answer

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