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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 47,886
Hello all, Any help with this will be much appreciated. I've scoured the web and searched through textbooks, but I...
May12-08 02:43 PM
3 4,292
Why is it easier to balance on a bicycle when you are cycling faster rather than slow? Does it have something to do...
May12-08 02:33 PM
8 2,076
Hi to everyone I wonder if someone knows how can i compute the total reflected solar radiation from a parabolic...
May12-08 06:50 AM
3 2,592
Hi, I'm a first year physics undergraduate and doing a structure of matter course. I'm having difficult ...
May12-08 06:30 AM
0 1,440
OK if we have a circuit with a battery of emf e and internal resistance r and external resistance R. We are given that...
May12-08 02:04 AM
2 1,218
Couple questions for you guys. 1. How does a single electric potential affect the atoms within a conductor. For...
May12-08 12:24 AM
1 951
I'm more curious about what would it be, sort of question, like I know that When a positive charge is release and...
May11-08 11:20 PM
3 4,772
The pressure exerted by a saturated vapour depends on the temperature and the curvature of the liquids surface. ...
May11-08 10:27 PM
5 6,279
Hi, This should be quite a simple question but here goes: My question is about the conservation of electrical...
May11-08 08:23 PM
3 1,528
lets say we have two water droplets(assume them to be spherical shape) with a each having charge q and each has the...
May11-08 03:01 PM
8 1,201
When I want to find the energy in a system containing two points charges q and -q, I can use the following formula: ...
May11-08 10:46 AM
12 1,264
A small positively charged sphere is lowered by a nonconducting threead into a grounded metal cup without touching the...
May10-08 09:44 PM
0 1,364
After following the thread "ideal conductor vs superconductor" a while, I am wondering about something that must have...
May10-08 09:42 PM
2 2,543
i know how the magnetic field is shaped around a wire with current, and in the case of a solenoid, and in a bar...
May10-08 12:34 PM
4 2,223
can anyone help my figure what it take to raise my pool temp using coiled copper pipe paint ted black half inch...
May10-08 11:36 AM
0 1,186 When this machine takes 0.2 moles of a one atomic ideal gas through this cycle,...
May10-08 11:26 AM
0 961
Chemical reaction have 2 classifications: Exothermic and Endothermic. Exothermic is when the chemical give off heat...
May10-08 10:53 AM
7 2,717
This is becoming a post of controversy ( Can anyone here...
May10-08 05:39 AM
3 5,414
So this morning, while prepping for my calc 2 final, I sat at the breakfast table and drank my coffee. After stirring...
May9-08 09:07 PM
3 1,169
Hi, I'm having some troubles with Faraday's law of induction: \mathcal{E} = - {{d\Phi_B} \over dt} I don't...
May9-08 02:48 PM
5 5,060
suppose I have a charge q at (x=-d) and a charge q at (x=+d). the force between them is q^2/(4*pi*(eps_0)*4*d^2). ...
May9-08 02:24 PM
1 1,014
Hi, I've had this question in my mind for a long time.. When we say that the electrical energy stored in a vacuum...
May9-08 11:51 AM
0 793
How are they related?
May9-08 08:43 AM
1 1,931
I'm trying to get a better understanding of this sort of thing. Here is what I know... A postive point charge "q"...
May9-08 06:43 AM
1 1,746
How does thermal expansion effect the diameter of a hole in a sheet metall, When we r dealing with length it is...
May9-08 06:18 AM
3 14,016
Can someone explain in terms of electric fields how the index of refraction squared = the dielectric constant of the...
May9-08 05:26 AM
1 11,889
Everywhere I read on tire pressure for bikes I hear that lower pressure gives you increased control and climbing...
May9-08 12:13 AM
9 2,750
When a rigid body experiences a rotation about an axis other than one of its "principal axis of rotation", it...
May7-08 11:38 PM
Nick R
0 1,551
Does anyone have a rough idea on how the Crayola Colour Explosion Board works? Especially the part which allows the...
May7-08 09:25 PM
0 1,052
hi guys, I was playing around with Newton Equation F=Gm1m2/r^2 I separate Fr^2 = Gm1m2 . This is bugging me. ...
May7-08 05:31 PM
5 1,202
There is a section that contains dealings with Maxwell's equations in my vector calc book, and there are, to my...
May7-08 05:05 PM
3 2,093
I have a helicopter flying, but it is at rest in relation to the Earth, i.e., it's just hovering. That means the...
May7-08 05:01 PM
4 1,455
Poynting Vector is by definition: S = 1/u(E x B), where S points in the direction of the EM wave's motion. In...
May7-08 04:59 PM
2 1,648
How come both spring and rubber band are elastic whereas spring are contracted and rubber bands are stretched? I...
May7-08 07:40 AM
Andy Resnick
8 2,333
Here’s an interesting effect discovered by a group of Iranian physicists at Sharif University of Technology in Tehran,...
May7-08 07:35 AM
Andy Resnick
1 1,422
Consider a capacitor which is just like a plate capacitor, but instead of the upper electrode being a plate it is a...
May7-08 07:12 AM
2 3,236
Hi, I'm having a little trouble understanding why the field inside a charged conductor must be zero. I understand...
May6-08 08:44 PM
7 1,953
Sup guys, What is an electromagnetic wave? Now i understand that its made of oscillating electric and magnectic...
May6-08 08:15 PM
3 1,580
Hi, I read in the Feynman Lectures Vol II that the assumption that the electron is a point leads to an infinite...
May6-08 07:58 PM
10 6,043
Why not simply use a voltage field between concentric plates to remove electrons w/ undesired velocity, then use other...
May6-08 05:55 PM
0 1,036

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