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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
1 48,204
I just read this, from a site dedicated to popularizing science: " ...think of air as being like water. If you...
Sep14-13 10:19 AM
5 1,124
I was looking at a site which described the classic demonstration to illustrate how water pressure increases with...
Sep14-13 09:27 AM
3 515
Torque, in particular, is always a concept that has confused me. Can the rules related to torque be derived or are...
Sep13-13 10:15 PM
16 1,597
Can an electromagnetic wave be deflected by electric or magnetic field.
Sep13-13 04:06 PM
4 389
My mechanics prof today said when setting GMm/r2 = ma, the canceling of the small m is actually a bit nuanced because...
Sep13-13 12:59 PM
2 503
hi, I'm having trouble understanding what the difference is between the B and H fields. What my understanding is, if...
Sep13-13 11:21 AM
rebel rider
107 33,965
Howdy everyone, I'm sorry if this is in the wrong forum, but since I believe it is mostly a thermodynamics problem I...
Sep13-13 08:52 AM
6 702
In my lab I have a TEM00 laser, so there is no electric or magnetic field in the direction of propagation (call it z...
Sep13-13 07:43 AM
Claude Bile
4 536
Why do we use phasor representation in physics..For example,why we need maxwells equation in phasor form as well??
Sep13-13 07:38 AM
Claude Bile
5 670
Hi all, as a physics student, I seldom use Fourier transform but from my understanding, given a periodic function you...
Sep13-13 07:35 AM
Claude Bile
12 808
Hello everyone, My Name is Dwayne McIntosh. I am not that good at Physics or Mathematics however i do have a...
Sep13-13 12:09 AM
2 545
A glass bulb contains air at room temperature and at a pressure of 1 atmosphere. It is placed in a chamber filled with...
Sep12-13 09:59 PM
Andrew Mason
1 730
Hello everyone, I've run across an interesting Newtonian physics problem that I'd like some input on. The problem...
Sep12-13 06:53 PM
Doc Al
1 611
Hello, I don't know if this is the right place to ask this, but here it is: Does the brake pad/rotor temp effect...
Sep12-13 06:20 PM
8 567
Hi, In the case of dielectric in electric field E0, we have E1 = E0 outside crystal and E2 = E0 - P inside, so that...
Sep12-13 04:00 PM
0 371
Hello, I'm trying to imagine how Coulomb would've measured the force between electrically charged objects, but...
Sep12-13 11:23 AM
1 499
Hello! Promising that I will not make other new questions in the next days :smile:, I have a doubt about the meaning...
Sep12-13 08:47 AM
9 1,584
Im given this question by my Physics teacher while disscusing thermodynamics. How to Prove that Tv^gama-1 = Constant ?...
Sep12-13 08:20 AM
1 596
Hi, i would like to know, why the motorized control valve have to fixed at chilled water return pipe but not in...
Sep12-13 04:07 AM
0 370
Hi All, Thanks again to all the great mentors and contributors to this forum. I wanted to ask a question about...
Sep12-13 03:56 AM
2 449
How would I go about calculating the pressure of supercritical water at an arbitrary temperature in a closed container?
Sep11-13 08:43 PM
2 555
Hello all, So the total internal energy of a gas as far as I've been told is 3/2(NKT) but it can also be written as...
Sep11-13 08:38 PM
2 564
I have a question for which I am intensely confused. Lets say a car was pushing a big truck from behind. And the...
Sep11-13 06:22 PM
14 1,110
I am consistently getting this wrong. To me, in the picture below, it would make sense that the structure would be...
Sep11-13 05:07 PM
2 599
In Landau Volume 2 (page 71) an expression for determining the entire electromagnetic Lagrangian is given. What would...
Sep11-13 05:03 PM
4 530
So lets say a gas is doing some work against a piston and decreasing its internal energy. Does the gas also do work...
Sep11-13 12:02 PM
2 422
How do I calculate the surface temperature of a shipping container's roof over 24 hours? All weather and sun...
Sep11-13 07:41 AM
3 619
I was reading the derivation on Wikipedia: Why is the...
Sep11-13 05:01 AM
2 588
Does anyone have an intuitive explanation for why torque depends on the perpendicular distance from the axis of...
Sep11-13 02:53 AM
2 705
I have a mass (m) at the end of a rigid link of length r, pivoted at the red circle (below). m is acted on by a...
Sep10-13 11:41 AM
3 494
The centripetal acceleration of a circle is: a_c = \frac{v^2}{r} * u_n. The acceleration of an ellipse is different. ...
Sep10-13 05:03 AM
14 1,614
Hi ! I've been thinking this problem a whole and I could not find an answer. I want to solve the following problem:...
Sep9-13 11:14 PM
0 489
So I am probably understanding something wrong but would gauss's law \frac{Qinside}{\epsilon0} for a sphere...
Sep9-13 07:15 PM
1 655
Without air resistance, bodies travel in a parabola. What is the curve that is travelled when air resistance is...
Sep9-13 05:33 PM
11 837
What is the electric field due to a current carrying wire? In a Griffiths EM problem, he treats the E field outside a...
Sep9-13 02:54 PM
5 942
The book that I use (Concepts in Thermal Physics by S. and K. Blundell) states the second law in two ways. The way...
Sep9-13 10:20 AM
4 806
Where can I find a proof for the Ampere Circuital law? Wherever I look, I just find a proof for an infinitely long...
Sep9-13 08:33 AM
11 1,558
Hi, I am trying to gain a better understanding of the classical model of electrodynamics, so what I mean by this...
Sep9-13 04:29 AM
1 516
Hi, I've been toying with a thought experiment, and I was wondering if it had any basis in reality. Is it possible...
Sep8-13 08:51 PM
8 597
Please help me, what are micro and macrostates, what are accessible states?
Sep8-13 08:49 PM
1 807

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