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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 47,822
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
9 316
How magnetic field associate with mass........ from the experiment we know that this is due to electric charge........
Aug24-14 06:39 AM
3 247
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
8 1,011
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
83 2,105
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
9 278
In my theoretical mechanics class, we went over some very basic conservation laws (namely momentum) and talked about...
Aug22-14 03:37 PM
1 177
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
2 231
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
1 216
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
1 159
I was going through "Engineering Thermodynamics" by Cengel & Boles studying exergy analysis of a closed(non flow)...
Aug21-14 01:36 PM
3 196
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
3 192
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
1 234
Hello Forum, Resolution is an angular distance (measured in fractions of an 1 degree angle). The lower the...
Aug21-14 09:52 AM
3 202
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
15 365
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
15 273
Reference to Griffith electrodynamics question:- 1.16 Compute the divergence of an inverse square vector field. ...
Aug21-14 12:07 AM
2 175
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
7 190
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
4 265
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
2 170
Hello, We read very often that wave propagation électro-magnetism is the result of an interaction between electric...
Aug20-14 01:33 PM
23 404
Good day! I am a beginner in Finite Element Analysis and Structural Mechanics. I have problem in understanding the...
Aug20-14 09:01 AM
2 159
Aug19-14 07:47 PM
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
4 210
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
46 1,520
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
13 449
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
1 183
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
1 152
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
13 292
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
Hi, I have a question If im not mistaken, the Maxwell relations of theromdynamics -----for example: ∂G/∂T) = -S ; ...
Aug18-14 07:02 PM
John Perez
7 229
Is it correct that the two ways that force can be 'applied' are via an Impulse or Work? I know that force is defined...
Aug18-14 04:56 PM
1 186
Hi all, I have a (hopefully) quick conceptual question that I'd like to clear up with your help. Is the...
Aug18-14 04:48 PM
"Don't panic!"
16 461
Currently I'm reading Magnetostatics. While reading Divergence of B, I fell into a confusion that what divergence...
Aug18-14 08:53 AM
14 304
Hi pf, I have been reading about back EMF and just had a few questions. I found this article on wiki...
Aug18-14 06:21 AM
1 152
if the sun disappears, the earth would go dark and life would end ... it would also go out of orbit but how...
Aug18-14 01:25 AM
8 323
Hi guys. Let me just say at the outset that I know very little fluid mechanics but I keep coming back to the same...
Aug17-14 05:19 PM
12 361
Maximum value of friction depends upon the normal reaction and normal reaction can be impulsive, so does that imply...
Aug17-14 02:15 PM
2 147
Different four potentials can generate the same electromagnetic fields. Specifically the following degrees of freedom...
Aug17-14 12:04 PM
13 309
I've been looking for this proof for months but I wasn't able to find something...
Aug17-14 09:46 AM
Simon Bridge
1 159
It is well known that when the vapor pressure of a substance is bigger than the external pressure, it boils. In vacuum...
Aug17-14 07:19 AM
16 240

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