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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
Hello PF'ers, Why is it that two light-bulbs produce twice as much brightness as a single light-bulb would? If we...
Aug26-14 08:24 AM
ViolentCorpse
4 205
I want to construct 5 sided dice in the shape of a square-based pyramid. When rolled, I want the die to have equal...
Aug25-14 09:09 PM
Haborix
12 377
hi, I'm a student and i have an electromagnet and a bar magnet paced head on coaxially and i want to calculate the...
Aug25-14 07:16 PM
Meir Achuz
32 846
I cannot seem to visualize how this compression and rarefaction occurs for example when I clap my hands, I know I move...
Aug25-14 07:09 PM
hongiddong
4 201
Hey! I need to calculate the electric field on the axis of a circular plate of radius a with the following charge...
Aug25-14 03:24 PM
loops496
2 144
Hello, I am having trouble understanding collision frequency in following discussion from Kubo,...
Aug25-14 08:46 AM
AirTycoon
2 124
Hello, I am a PhD student in chemistry, and need to determine the pressure of a reaction to be carried out I...
Aug24-14 11:32 PM
Chestermiller
5 200
I am having trouble wrapping my head around the idea of a piston/cylinder type arrangement where the piston has a...
Aug24-14 05:54 PM
ullrtech
7 268
I know that delta h(Enthalpy) is heat and it is also the total kinetic energy of the system. Temperature is the...
Aug24-14 02:13 PM
Andrew Mason
11 414
While deriving lagrangian equation using D'Alembert's principle, in Goldstien, they defined a variable called "virtual...
Aug24-14 10:08 AM
USeptim
1 212
My question relates to entropy generation in a closed system ΔS=dQrev/T for a reversible process ΔS=dQ/T + Sgen for...
Aug24-14 09:54 AM
Chestermiller
12 259
Just read in Taylor that in general the kinetic energy can depend on position as well as velocity. I believe him, but...
Aug24-14 09:47 AM
USeptim
9 321
How magnetic field associate with mass........ from the experiment we know that this is due to electric charge........
Aug24-14 06:39 AM
ChrisVer
3 249
We know that a steam power plant is basically a heat engine with steam as the working fluid. According to the...
Aug23-14 11:35 PM
Soumalya
8 1,012
when a magnetic field exert force on a moving charge the work done by it is 0.But bar magnet do work.And i read that...
Aug23-14 04:52 PM
DaleSpam
83 2,115
I am not sure if this is the right forum for this question, but I arrived at the question while studying the principle...
Aug23-14 03:18 AM
A.T.
9 280
In my theoretical mechanics class, we went over some very basic conservation laws (namely momentum) and talked about...
Aug22-14 03:37 PM
Orodruin
1 178
Hi all, I am preparing for my "second chance exam" in analytical mechanics. It is a graduate course i.e. based on...
Aug22-14 11:38 AM
samalkhaiat
2 234
Divergence of electric field is 0 for the field produced by a point charge at origin at points other than origin is 0;...
Aug22-14 12:43 AM
Delta²
1 220
In vector form, L=Iω. I am trying to show that for a point particle, this reduces to L=rxp, but am getting an...
Aug21-14 06:05 PM
jtbell
1 161
I was going through "Engineering Thermodynamics" by Cengel & Boles studying exergy analysis of a closed(non flow)...
Aug21-14 01:36 PM
Soumalya
3 198
For a uniform, hollow cylinder, why is this derivation wrong? M = mass of whole solid cylinder m = mass of missing...
Aug21-14 12:42 PM
BrainSalad
3 194
I'm given an expression for the pressure of air with height z, as P(z)=P(0)e^{(-mgz/k_bT)} Where m is the...
Aug21-14 11:09 AM
Greg Bernhardt
1 236
Hello Forum, Resolution is an angular distance (measured in fractions of an 1 degree angle). The lower the...
Aug21-14 09:52 AM
fog37
3 207
I hope this is posted in the correct thread. When I was still in my physics class, we learned that a loop of wire...
Aug21-14 02:06 AM
Simon Bridge
15 366
According Pascal law we get force high and low to the applying force.....why fluid not behave like ideal solid body...
Aug21-14 02:02 AM
rcgldr
15 275
Reference to Griffith electrodynamics question:- 1.16 Compute the divergence of an inverse square vector field. ...
Aug21-14 12:07 AM
porcupine137
2 182
I have already balanced beam both side two same mass at same distance and it is pivot on its center of...
Aug20-14 08:22 PM
D.R.U
7 193
For example, it could be said that the equation ∇*B= 0 is based on the observation that there are no magnetic...
Aug20-14 03:17 PM
newton_1372
4 268
Hi everyone, I am about to enter a local Science Fair and my project revolves around creating plasma in a...
Aug20-14 02:29 PM
Physicist50
2 173
Hello, We read very often that wave propagation électro-magnetism is the result of an interaction between electric...
Aug20-14 01:33 PM
USeptim
23 406
Good day! I am a beginner in Finite Element Analysis and Structural Mechanics. I have problem in understanding the...
Aug20-14 09:01 AM
shawn
2 161
http://cognizantwire.net/HTMLKHSL/ELECTRON/MAGNETIC/MoveCharge.GIF...
Aug19-14 07:47 PM
DaleSpam
12 268
Does anyone know how the mathematics/formulae of SHM (say a particle in a force field, with the standard a=-d) changes...
Aug19-14 05:27 PM
DaleSpam
4 212
Where is the glitch? 1. Let a single free electron move along x axis with constant speed Vx. It encounters magnetic...
Aug19-14 04:25 PM
DaleSpam
46 1,533
Hello everyone, as I know the regular precession of torque-free symmetric top is such a cliche, I'll try to keep...
Aug19-14 03:01 PM
D H
13 452
an air wave takes place in volumes of air, water takes place in volumes of water... but u can have an electromagnetic...
Aug19-14 10:57 AM
WannabeNewton
1 186
Please help me with this, In Reheat Rankine cycle, we first Expand the steam partially in a high pressure turbine...
Aug19-14 02:05 AM
tduell
1 154
I just start to read Mathematical Methods of Classical Mechanics by Arnold. And I am sort of very puzzled by all the...
Aug18-14 11:40 PM
fisicist
13 294
When watching some videos about neodymium magnets, I came upon a very interesting phenomenon. Namely, the maker of the...
Aug18-14 10:31 PM
Simon Bridge
5 281

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