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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 48,243
What happens when the NET force on a massless body is 0. I mean what will be the acceleration , if any? Also if we...
Jun27-08 10:37 AM
16 2,483
Hey everyone, Can you justify this: The total energy of a thin spherical shell is the sum of its "self" energy and...
Jun27-08 10:12 AM
5 1,071
I started working on a few "Babylon 5" related physics problems involving angular motion. It is easy to come up with...
Jun26-08 11:49 PM
1 2,575
Hello! I wonder if anyone can give me some quick advice. I'm designing a physically small (but high current)...
Jun26-08 11:31 AM
5 5,282
Hi all. My teacher briefly mentioned brownian motion a few days ago but didn't really go in depth. I am planning to do...
Jun26-08 11:10 AM
2 1,716
I am trying to understand the origin of the following expression for the reaction field (dipole \mu in spherical...
Jun26-08 09:57 AM
0 1,272
Hi, I have heard that temperature is not a mechanical variable. That is, that even if you knew the positions and...
Jun26-08 08:17 AM
Andy Resnick
2 1,766
Well I read in a book that: \DeltaG= RTln (K) (Where K is the eqm const) H "K" is not necessarily dimensionless so...
Jun26-08 07:59 AM
3 1,309
I have a strange question and have internet-wide not found answers: An ideal pendulum hanging straight down gets a...
Jun26-08 07:10 AM
Doc Al
5 2,015
Im a little fuzzy on the difference between the two. If you look at the attached picture, if that force stays with...
Jun26-08 05:15 AM
Doc Al
4 26,893
In source free case the Maxwell equation are \partial_{\mu}F^{\mu \nu}=0;\,\,\partial_{\mu}\tilde{F}^{\mu \nu}=0...
Jun25-08 07:37 AM
1 3,362
Sorry, but while going through the article on magnetism in wikipedia I read the following which i couldn't not catch...
Jun25-08 12:26 AM
44 22,118
hello, i'm trying to learn statistical mechanics with feynman's book he seems to have a lot of times where he thinks...
Jun24-08 01:54 PM
0 4,187
So i have been delving into the realm of electrodynamics for the first time in an independent study that i'm doing but...
Jun24-08 05:58 AM
5 4,113
I was just wondering how these amazing engineering feats support the loads on their wings? Specifically the larger...
Jun24-08 01:37 AM
9 10,293
What happens when you sandwich an uncharged capacitor between two charged capacitors? 1. Just as a piece of...
Jun23-08 07:48 PM
34 6,090
hey what does everyone know/estimate one of those three man giant elastic water ballon launchers has as its k constant...
Jun23-08 04:36 PM
2 4,202
I just saw this article about a skyscraper stabilizing ball:...
Jun23-08 05:56 AM
1 2,716
I am looking for a formula to determine what speed an object will fall with a known height and weight. For example a...
Jun22-08 03:52 AM
5 9,394
How does it leave the earth if it can only be transferred through matter and there's space outside our atmosphere?
Jun22-08 02:29 AM
3 3,787
Howdy all, I had a quick question: An example problem in my physics book (Physics for Scientists and Engineers, 6th...
Jun20-08 06:09 PM
4 1,688
HI guys. im facing a problem that is quite interesting but quite complicated to explain. so would like to ask some...
Jun20-08 02:29 PM
6 10,536
A friend of mine told me this; you take a metal pole or rod and hold on to one end while warming up the other until...
Jun20-08 07:11 AM
3 1,379
can anyone please help me, i want to know that whether 12v DC from a battery is same as 12v DC from a transformer (...
Jun20-08 05:56 AM
23 3,767
Although it "sounds" weird... it is possible: Application: ...
Jun20-08 01:29 AM
0 7,968
Been too busy with school to post here in a while, so of course I come back when I have a question about something! ...
Jun19-08 08:31 PM
0 1,673
My main question is if the Maxwell equations have been generalized to include extra dimensions in an generally...
Jun19-08 10:56 AM
3 2,178
why accelerated charged particles radiate? i appreciate if you help.
Jun19-08 09:41 AM
Ed Aboud
1 2,430
Hi all, This is frustrating. I've searched all over the net for how one can generate high freqency, maybe a few...
Jun19-08 04:57 AM
2 1,227
Audio headphones, especially portable ones, need to be sealed against the ear at low frequencies to reproduce bass. ...
Jun18-08 11:39 PM
Loren Booda
2 1,436
Hi I was ready a physics text book and came across a quiz related to friction "What is the direction of the...
Jun18-08 11:14 PM
21 2,944
I am not a novice at thermodynamics but still the following question made me think over my status more than twice. ...
Jun18-08 10:18 PM
4 2,459
What is the equation of wave travelling in space making an angle "p" to the horizontal with wave length 'a',frequency...
Jun18-08 08:55 PM
3 1,086
When working out problems in mechanics by drawing free body diagrams and so on, I personally find it better to write...
Jun18-08 06:36 PM
8 1,610
A magnet will induce EMF when it passes through a conducting coil. Where does that energy come from? Does the coil do...
Jun17-08 07:32 PM
Doc Al
10 6,627
In section 4 of Landau and Lifgarbagez they derive the expression for the kinetic energy by expanding the Lagrangian...
Jun17-08 11:35 AM
1 2,135
Hi Can anybody explain why the top part of the body goes back when the car accelerates? Can you please explain in...
Jun17-08 11:08 AM
11 1,922
Hey can neone tell me why this is so? I have not got the ans in any book i read... Thnx 4 replying
Jun17-08 09:37 AM
Count Iblis
8 9,909
Process is isenthalpic if there is no transfer of heat to (or from) the surroundings and no work done on (or by) the...
Jun17-08 09:31 AM
Count Iblis
0 1,687
What are the general boundary conditions for nonviscous, incompressible fluid flow? I am trying to find the velocity...
Jun16-08 01:33 PM
2 2,115

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