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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 45,863
I was playing around with some manipulations of maxwell's equations and seeing if I could work out the wave equation...
Jul15-08 05:00 PM
Andy Resnick
3 950
Hi. I'll start off by saying I have a background in mathematics, but not in physics. If I use the wrong term, I...
Jul15-08 02:17 PM
5 1,128
Hey everyone. First post here. Sorry if this is the wrong place. Force calculation seems to fall under classic...
Jul14-08 11:33 PM
2 1,148
Are there any other math/physics/engineering runners out there who are interested in collaborating on an effort to...
Jul14-08 06:19 PM
1 4,202
Hello! I'm very new to these forums so please pardon my ignorance. When you twirl a mass on a string horizontally...
Jul14-08 05:56 PM
Doc Al
6 2,439
Why do we apply law of conservation of linear momentum on a body that explodes in air when an external force,...
Jul14-08 08:35 AM
8 2,459
Hi all, Some time ago I watched this video about an intra-terrestrial elevator. It is about a theoretical elevator...
Jul14-08 06:06 AM
4 1,372
Hmm how does one prove that a lagrangian is a function of just the generalized coordinates and the generalized speed...
Jul14-08 03:19 AM
2 1,157
BACKGROUND: I am doing an experiment determining the young's modulus of a cantilever through principles of SHM (i.e....
Jul13-08 07:05 AM
4 4,045
1975 the roof of the Montreal Velódromo which weighed 3.7x107N was raised 10cm to be centralized. What the work...
Jul12-08 10:10 PM
1 1,412
There is a EM radiation of frequency suppose x Hz.Let it has to travel a distance of y m.Now what's the time required...
Jul12-08 06:10 PM
Andy Resnick
3 1,323
Hi. I'm having some problem solving this problem: Consider a 3 body elastic collision; 3 bodies on 1 axe; both have...
Jul12-08 06:16 AM
1 3,249
Can anyone give a simple explanation to generalised cordinates in Lagarangian/hamiltonian mechanics
Jul11-08 03:02 PM
Oberst Villa
2 1,220
For an ideal gas PV=nRT where n is the number of moles show that the heat transferred can be written as: dQ =...
Jul11-08 10:43 AM
Andrew Mason
1 1,381
Lets assume we have a resistor material, with a perfect solid spherical shape and no defect, we connect it from south...
Jul11-08 08:44 AM
4 7,886
I've been searching through the internet and some of my optics books, but nowhere was I able to find the derivation of...
Jul11-08 03:49 AM
10 4,031
In multipole, the electric quadrupople interaction with incident electric field: ...
Jul10-08 11:29 PM
0 1,584
the link below should take you to a google book called "principles of nano-optics" by novotny and hecht. my question...
Jul10-08 10:38 PM
2 1,496
OK. I have been fighting with my pen and paper for hours trying to fathom this: I have been thinking about that...
Jul10-08 09:18 PM
13 2,389
does the electromagnetic spectrum limited? whate is the theorical answers for limitation of the spectrum?
Jul10-08 07:23 PM
3 1,186
A friend asked me this question: There is a capacitor with capacitance C, charge Q on either plate and an electric...
Jul9-08 04:43 PM
15 2,041
I have never understood how images are reflected in mirrors, even now that I am going into my fourth year of...
Jul9-08 04:02 PM
13 2,299
let's suppose i have two differently pressurized balloons and i push them together. how can i predict what that...
Jul9-08 03:24 PM
3 1,324
If a hole is somehow made to pass straight through the center of the Earth, and out on the opposite side, what would...
Jul9-08 03:17 PM
9 2,314
Hi Are there any exciting experiments for the conservation of linear momentum?
Jul9-08 01:19 PM
5 1,195
Does the electromagnetic or acoustic resonant frequency of a hallow spherical object ever equal the circumference of...
Jul9-08 11:08 AM
11 6,515
Question: Analyze the motion of a small bead attached to a wire which is rotating along a fixed axis? Proof(Using...
Jul9-08 10:06 AM
1 974
As an example, if you raise your arms in front of you, your center of mass will move slightly forward. However, you...
Jul9-08 08:39 AM
6 1,326
Hi guys, I am self-studying physics, but I am confused for something following: given 1-d motion of an object o, we...
Jul9-08 04:55 AM
Doc Al
10 2,043
It's been a while since I've studied mechanics. Would someone remind me as to the equation for the deflection of a...
Jul8-08 10:56 PM
1 2,241
Hello all, I have a quick question. If i put two identical mirrors right next to each other on the same surface at...
Jul8-08 01:38 PM
3 1,834
Is there a particularly good reason that angular momentum was defined as the cross product of position and linear...
Jul8-08 10:18 AM
34 4,429
i have been confusing according this picture which is taken from...
Jul8-08 09:49 AM
1 940
I was wondering why temperatures are so low out there in the vacuum of outer space? my understanding is that a...
Jul7-08 08:41 PM
Andy Resnick
10 2,514
Take a two sound waves: for example let us spread them at both poles of the human hearing spectrum. The low frequency...
Jul7-08 06:13 PM
3 6,502
Hi there, I am doing physics as level and i am finding it very difficult especially the projectiles. I am unable to...
Jul7-08 03:35 PM
3 1,178
Well, we all know that the farther you move the point of force application from the point of rotation, the greater the...
Jul7-08 12:40 PM
19 13,489
Ok, I have a general question about centrifugal force. Lets say I have an object who moves in a circular path, we...
Jul7-08 12:05 PM
117 15,067
An EM Field is described as follows : The electromagnetic field is a physical field produced by electrically...
Jul7-08 09:05 AM
2 969
Hi! I've really been wondering how air can possibly get cooled with a fan. I read somewhere on the internet that a...
Jul7-08 08:54 AM
6 1,829

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