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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
ZapperZ
1 47,791
We have a hollow spherical pendulum that is filled with water. The sphere has a hole under it. If it starts to...
Jun28-08 05:31 AM
Hootenanny
9 3,208
So...I wanna solve the problem where two masses on springs collide into eachother on a frictionless surface. The two...
Jun27-08 12:32 PM
tiny-tim
4 1,245
So, I'm a mathematics major about to start my third year. I decided to pick up a physics minor (I've only had the...
Jun27-08 12:19 PM
Jacobpm64
3 4,959
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
Redbelly98
16 2,448
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
aniketp
5 1,061
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
Xezlec
1 2,553
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
pzlded
5 5,247
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
thirdwind
2 1,705
I am trying to understand the origin of the following expression for the reaction field (dipole \mu in spherical...
Jun26-08 09:57 AM
joseph12
0 1,267
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 1,752
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
Mapes
3 1,291
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 1,986
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 26,776
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
arroy_0205
1 3,334
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
fedaykin
44 21,742
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
bubbloy
0 4,176
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
pzlded
5 4,078
I was just wondering how these amazing engineering feats support the loads on their wings? Specifically the larger...
Jun24-08 01:37 AM
russ_watters
9 10,155
What happens when you sandwich an uncharged capacitor between two charged capacitors? 1. Just as a piece of...
Jun23-08 07:48 PM
pzlded
34 6,032
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
rcgldr
2 4,173
I just saw this article about a skyscraper stabilizing ball:...
Jun23-08 05:56 AM
Borek
1 2,692
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
stewartcs
5 9,360
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
aniketp
3 3,733
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
Redbelly98
4 1,669
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
rcgldr
6 10,445
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
TVP45
3 1,374
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
TVP45
23 3,729
Although it "sounds" weird... it is possible: http://www.freepatentsonline.com/6931231.html Application: ...
Jun20-08 01:29 AM
jumpjack
0 7,945
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
LtStorm
0 1,662
My main question is if the Maxwell equations have been generalized to include extra dimensions in an generally...
Jun19-08 10:56 AM
Parlyne
3 2,161
why accelerated charged particles radiate? i appreciate if you help.
Jun19-08 09:41 AM
Ed Aboud
1 2,414
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
ZapperZ
2 1,221
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 1,426
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
vijay_singh
21 2,900
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
Altairs
4 2,446
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
G01
3 1,080
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
Crosson
8 1,600
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 6,562
In section 4 of Landau and Lifgarbagez they derive the expression for the kinetic energy by expanding the Lagrangian...
Jun17-08 11:35 AM
dslowik
1 2,125
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
jablonsky27
11 1,896

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