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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 47,849
I'm just sort of looking for some clarification on some of this... 1) Say we have an ideal emf (battery, I...
Mar19-08 02:12 AM
mikelepore
4 1,488
I have a question about the deduction of First Thermodynamic Law. The book that I have is written by Paul A. Tipler...
Mar18-08 04:59 PM
Mapes
3 3,684
I am trying to determine the speed of one vehicle involved in an accident. I know the speed of the other vehicle, and...
Mar18-08 09:33 AM
Danger
13 1,998
Dear all When I first learned about forces and motion I was taught F=ma in terms of apply a force to a mass and the...
Mar18-08 06:43 AM
DaleSpam
50 5,874
I got into a discussion about heat sink materials and was beaten up for suggesting that Aluminum is better than Copper...
Mar17-08 09:15 PM
Steve_
11 2,903
Using a Laze light and curtain far from it 50 m. It is supposed that A is a light centre when having no aberration...
Mar17-08 06:06 AM
einsteinooo
4 1,034
It is clear that stronger or faster the wind, the more force it exerts on, let say, a house or anything. So, can we...
Mar17-08 05:21 AM
hadel
0 6,453
This is a followup to the old thread What are the FULL classical electrodynamic equations? which never really provided...
Mar17-08 04:49 AM
pellman
7 2,356
i was just stumbling across an accelerator patent that is 20 years from the filing date. linear accelerator / psw /...
Mar16-08 09:19 PM
klystronman
0 1,120
I've got a great good head for intuiting physics but no post-2ndary math. How fast must a cylindrical space station...
Mar16-08 09:02 PM
wysard
61 8,591
Can anyone show me the calculus proof of the forces of gravity canceling out inside of a shell of mass? I couldn't...
Mar16-08 07:06 PM
woodne
0 2,191
For my physics practical coursework I investigated how the rate of revolution of the permanent magnet in an...
Mar16-08 06:31 AM
jamhar89
2 2,884
Hi, I'm working on some simple aerodynamics for a game. Are there any generic, but fairly accurate, formulas for...
Mar15-08 11:59 PM
pantaz
4 8,430
hi m a new member here....actually i m in a great confusion....plz solve dis confusion fer me...its related to...
Mar15-08 11:41 AM
cristo
13 1,661
Hello everybody! I have a large set of items and, two-by-two, there exists some kind of attraction/repulsion that I...
Mar15-08 11:02 AM
jtbell
3 908
As part of a local competition, i have to calculate the distance that a projectile launched at an angle from a certain...
Mar15-08 09:06 AM
naes213
3 896
Okay, so the situation is a hydro-electric plant, assumed to have a vertical inlet pipe, of (s) metres high, and a...
Mar15-08 06:57 AM
rcgldr
14 12,001
Why dont metal objects such as a nail get charged by friction like the famous comb, plastic rod or glass rod - all...
Mar15-08 06:29 AM
pam
4 3,435
what's the force acting during stapling?
Mar15-08 01:53 AM
cryptica
0 1,057
Hey I was just wondering what the differences between the three forms of mechanics were. I've only studied basic...
Mar15-08 12:53 AM
Feldoh
4 4,209
Why don't we call B magnetic field strength like we call E, the electrical counterpart. In stead we call it magnetic...
Mar14-08 11:19 PM
nandan
4 1,016
Hello. I have what I hope to be a simple question. It's something that I've come across in several problems in my...
Mar14-08 07:32 AM
AussieDave
4 3,535
I am working on using a Runge Kutta 4th order code (in the C programming language) to predict a Keplerian orbit in 2...
Mar13-08 06:17 PM
D H
3 7,027
I'm not sure this is the right place to post this question but here goes: In feynman vol.1 39-9 there is a...
Mar13-08 12:30 PM
jbunten
2 3,549
Greetings, Can you recommend a web site or sites that has worked examples and discussion of harmonic motion with 2+...
Mar13-08 11:10 AM
SeniorTotor
1 1,193
L.D.Landau's book <Mechanics> first page have below word: if all the co-ordinates and velocities are simultneously...
Mar13-08 10:54 AM
SeniorTotor
13 3,037
I don't understand how walking 10 feet forward and then 10 feet back means you did zero work. If I pull a 1 pound...
Mar13-08 09:06 AM
stewartcs
13 1,510
Sorry if I'm posting in the wrong place. I am a High School Physics teacher in Christchurch, New Zealand. I recently...
Mar13-08 07:49 AM
Andy Resnick
2 1,370
What is the exact definition for momentum other than the formula p=m.v? Is there a way to understand it as a real...
Mar13-08 07:38 AM
SeniorTotor
6 1,315
In my little area of recent research, the Green's tensor is the relationship between a point force and the resulting...
Mar13-08 07:33 AM
SeniorTotor
2 7,172
I am just playing around with physics simulation in c++... and my latest obsession is simulating rigid body motion...
Mar13-08 05:13 AM
pkleinod
3 1,951
Hello! 1 MW can be transmitted , for example, in 2 ways: 1MW=100V*10000A; or 1MW=10000V*100A. In the...
Mar13-08 03:20 AM
SciencePF
7 1,655
Hi! I'd like to know if there is some way of computing or deriving the energy stored in a metallic object subject...
Mar12-08 05:26 PM
rsr_life
5 1,913
Dear all, Intuitively, the probability of finding a trapped particle at a given location x should be proportional...
Mar12-08 05:56 AM
pkleinod
7 1,831
In the definiton of magnetic lines of force, we talk about one unit north pole. Why? Path is independent of the pole...
Mar12-08 05:02 AM
manjuvenamma
0 1,237
Hi I read that in an encyclopedia but I don't understand it. "Because the surface of the material is now...
Mar12-08 04:36 AM
tiny-tim
5 1,546
Why can't I use Ampere's law to compute the magnetic field at the center (P) of a semi-circular wire? If I...
Mar11-08 03:03 PM
mgrantbaker
7 2,429
Hi everybody! I have a big question for you, I have been staring me blind on this problem I got. And wonder if...
Mar11-08 04:24 AM
Ploppen
0 757
I was wondering if anyone knows of systems for which the Hamiltonian is not equall to the total energy? This is an...
Mar10-08 03:53 PM
pmb_phy
2 1,784
Hi, I'm looking for a mathematical method of estimating gas density at a point within flow from a fairly low...
Mar10-08 10:55 AM
Sub
0 630

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