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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
ZapperZ
1 41,753
My E&M professor brought up this problem of considering a uniform charge density, rho, that is infinite in volume and...
Feb28-14 02:18 PM
dauto
3 259
If you have two sound sources emitting the same frequency and in phase with each other such that the emitted waves...
Feb28-14 01:55 PM
dauto
3 185
A simple question about elasticity theory/finite element method: Suppose I have a tetragonal 2D piece of a linear...
Feb28-14 03:18 AM
hilbert2
2 201
Hi all i hope some one can help but i have a feeling there will be no easy calculations for this one:confused: Im...
Feb27-14 04:58 PM
CWatters
1 216
Imagine two parallel conducting plates set at a distance of several meters. If one charges the two plates...
Feb27-14 03:44 PM
johne1618
4 222
I just have a quick question, and I'm guessing the answer is no but I wanted to make sure that this was sensible. In...
Feb27-14 09:49 AM
clem
2 204
Hi, does the intensity change when circularly polarised light passes through a linear polariser? I am thinking of...
Feb27-14 09:48 AM
dalind
3 192
If for some functional ##I##, ##\delta I=0## where ##\delta## is symbol for variation functional has extremum. For...
Feb26-14 01:11 PM
dauto
2 218
Hello 1. I was wondering why internal energy is usually expressed as a function of temperature and specific volume...
Feb26-14 01:20 AM
Maylis
10 283
How is electromagnetism different from gravity in that accelerated objects radiate EM waves when accelerated in an...
Feb25-14 07:20 PM
Andrew Mason
6 385
http://sploid.gizmodo.com/amazing-scientists-make-things-fly-around-in-space-usi-1492880964...
Feb25-14 02:45 PM
Bobbywhy
2 193
Is there a way to derive entropy or free energy without using partition function?
Feb25-14 09:13 AM
Useful nucleus
9 299
How did Newton come up with f ∝ Δp/Δt ??
Feb25-14 04:57 AM
adjacent
2 262
Hi guys and girls, Just had a question I have been thinking about for a while. Suppose you have a sound maker...
Feb25-14 02:52 AM
Bobbywhy
3 210
Ok, so in class last week, I had asked my professor about using the Lorentz Force Law to solve a particular problem. ...
Feb24-14 08:51 PM
Ascendant78
3 233
Letís say I have a horizontal rod whose total length = ΔXtotal = 5 inches. However, the rod is made up of two pieces...
Feb24-14 06:54 PM
Simon Bridge
1 184
Hi, I know that for the electric displacement vector field \oint D.dS=\sum Q_{c} does this mean that I can just use...
Feb24-14 01:03 PM
Meir Achuz
1 191
I have a general gauss' law/electric field question. In calculating the electric field of a cylindrical shape,...
Feb24-14 12:59 PM
Meir Achuz
2 221
Hi fellows, I've been looking for "High Repetitive Photocathode RF Guns" for more than a couple of days. It seems,...
Feb24-14 11:03 AM
ZapperZ
6 231
Hi there! I have a couple of questions for you guys about Spatial Light Modulators and laser beam profile aberrations....
Feb24-14 08:56 AM
Choisai
4 262
An electric charge produces a Coulomb electric field: E = dqe r/r3 A current element produces a Biot-Savart...
Feb24-14 08:38 AM
Harrisonized
2 189
What will happen if two batteries were connected in parallel, and how could the total voltage and current be...
Feb24-14 07:18 AM
Harrisonized
19 394
Hey guys, I was messing around with my guitar (classical guitar) and my amp lately. I put the treble on lowest, bass...
Feb24-14 05:07 AM
sophiecentaur
4 195
Hi I want to know what is the diffrences between E=σ/2ε0 & E=σ/ε0 of course I know we use the first for a very huge...
Feb23-14 01:49 PM
dauto
1 204
consider the image on the drawing at the top (above the yellow arrow) http://i.imgur.com/zEWCdDS.png if i had...
Feb23-14 06:20 AM
Chestermiller
3 265
I'll pose that as a general question, and specifically for sound waves, which Googling did not answer in a...
Feb22-14 07:08 PM
mfb
3 213
I'm interested in modeling a system where the material varies along its length, thus the conductivity coefficient...
Feb22-14 02:58 PM
j_phillips
7 192
I wonder if anybody can point me to a good explication of the atmospheric Coriolis effect broken down into base...
Feb22-14 05:34 AM
D H
6 306
Hi, And thank you for your time! :) I've been studying and coding for more than a month on a physic engine for car...
Feb21-14 11:50 PM
Deams
0 167
Hello I just read this http://io9.com/scientists-just-created-some-of-the-most-powerful-muscl-1526957560 where they...
Feb21-14 08:27 PM
Chestermiller
2 233
We know that gravity speeds up a body, like a meteor which enters the earth gets constantly speeded up by earth's...
Feb21-14 04:43 PM
Simon Bridge
18 922
I need to find the moment of inertia of a sphere of radius ##r## and mass ##m## about an axis through it's centre....
Feb21-14 02:23 PM
dauto
13 274
Earth has a huge angular velocity regarding its rotation. Now let's imagine that the earth has the velocity of 400...
Feb21-14 08:56 AM
DaleSpam
1 192
I was hoping that someone could explain why these different equations can be found from different sources please. ...
Feb21-14 05:36 AM
Philip Wood
5 247
It seems to me that for some thermodynamic variables it makes sense to talk of systems in contact with different...
Feb21-14 01:45 AM
Rap
2 240
Hello all, I was wondering if it was possible to have energy without an associated force. More specifically, can...
Feb20-14 10:27 PM
ahyaa
3 245
Hi I have been looking at canonical transformation using generating functions. I am using the Goldstein book and it...
Feb20-14 09:27 PM
dyn
2 196
Consider a solenoid with length L and N turns of wire wound around it, filled with a rod of permeability \mu .I wanna...
Feb20-14 08:35 PM
Meir Achuz
11 452
The Drude model of electrical conduction has the charge carriers being accelerated by an electric field and then...
Feb20-14 06:07 PM
Drakkith
2 202
Hi all. I'm a music student and I've been trying to educate myself about acoustics lately. I'm exploring the...
Feb20-14 01:35 AM
maajdl
1 185

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