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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 48,204
Hi, When you have interference in thin films, why does the film has to be thin? Why doesn't it work with "thick"...
Jun4-08 07:45 AM
yoran
2 3,292
Would a harmonic of the Larmor frequency have any effect on proton precession?
Jun5-08 12:29 PM
rj_duff
2 1,587
Hi I have a problem I'm trying to figure out, but no idea where to start. Essentially I am trying to calculate the...
Jun5-08 12:45 PM
RTW69
4 2,085
I want to create a little board with 20 LEDs. My only problem is wiring them, I want to make a parallel circuit. I was...
Jun6-08 12:16 AM
noagname
0 1,185
What is the difference between Simple Harmonic Motion and Harmonic Motion ? and How do we define the motion of a...
Jun6-08 03:46 AM
linuxpie
4 1,130
I've seen two references to magnetic charge density as something that Dirac said would explain charge quantization. ...
Jun6-08 08:55 AM
Peeter
2 1,704
It is often claimed that in a hot climate, it is better to paint one's house white because it will reflect more...
Jun6-08 09:30 AM
DaveC426913
8 2,464
Hello!I would like to ask about Electromagnetic induction in transformer.As we learn that an alternating voltage is...
Jun6-08 08:00 PM
ws0619
5 1,843
If a mass became pulled up from Earth, its U increases and its K decreases, but if it became pulled into space, its U...
Jun7-08 12:29 PM
Ignition
3 1,278
I have a question about the Poynting vector: mit.edu/8.02t/www/materials/StudyGuide/guide13.pdf (page 44/51) ...
Jun9-08 03:41 AM
Domenicaccio
2 4,007
for my lab we built an am radio, with a breadboard, variable capacitor, capacitors, antenna, ground, headphone,...
Jun9-08 10:40 PM
proton
0 1,518
In physics, we learned about friction between one object sliding across another, but when we got to torque and angular...
Jun10-08 12:00 AM
Telanor
3 3,297
Hi there. I got two questions for you: 1- How can I calculate the force of attraction in Newton of two bar magnets...
Jun10-08 07:56 AM
noneya44
2 7,799
Is it true that we can consider a spherical wave in the far field (i.e. away from antenna, at a large distance) as a...
Jun10-08 11:21 AM
HallsofIvy
1 3,962
hello every body, i am trying to understand the capacitor behavior as deeply as i can ... consider a simple...
Jun10-08 03:45 PM
armis
3 1,816
How would you find voltage difference between two surfaces? If you are given a capacitor with an internal electric...
Jun11-08 10:04 AM
cmos
1 1,565
Hi all. I was thinking of something: Bound charges in an insulator arise because of the polarisation, so even...
Jun11-08 10:57 AM
Niles
2 2,693
do sound waves carry momentum? any momentum at all (no matter how small)? the obvious answer is that they carry...
Jun12-08 07:22 AM
shamrock5585
10 5,750
A satellite is in a particular orbit. Too put it in a higher orbit(greater distance from earth), we increase its...
Jun12-08 01:17 PM
rcgldr
9 1,860
Say I have the following simple situation || || ||---/\/\/\---m1---/\/\/\----m2...
Jun12-08 01:33 PM
JohnSimpson
2 1,854
Hi, I was thinking about the graviton ride at amusement parks - the one that sort of simulates the feeling of gravity...
Jun12-08 02:51 PM
russ_watters
2 1,872
hi there. one question arrise from a discussion in our lunch!?: is the universe neutral?? that means; is the universe...
Jun12-08 03:32 PM
Littlepig
0 1,387
Hi I've working on a computer program where I need to calculate some electric fields. I am referring to a thesis...
Jun12-08 03:54 PM
broli86
2 6,594
Let's assume that we have a straight current-carrying wire, along the z axis of the cartesian (or cylindrical)...
Jun12-08 04:13 PM
Littlepig
5 2,146
Hello Guys As Electricity power supply Mechanical Engineer Entropy is a reality we battle with every moment. Is...
Jun12-08 09:18 PM
Euclid
3 1,339
so einstein is a genius of all genius. In his derivation of E=mc^2 he used the analogy of a box being in space not...
Jun13-08 09:27 AM
cmos
11 1,453
ok so i've got the three components of the inertia tensor (A,A,C) and ive derived expression for, using matrices, the...
Jun13-08 12:29 PM
latentcorpse
2 2,145
I have a Q re angular momentum (L) that's causing some heated discussion. A bullet is fired off center toward a...
Jun14-08 12:22 PM
RodB
2 1,393
Hi, I'm having some difficulties understanding some elementary physics concept. When different emf is supplied...
Jun14-08 04:23 PM
Phrak
5 1,806
this is just a question i cant seem to find an answer for, but i was wondering how strong a 5 tesla magnetic field is?
Jun14-08 11:17 PM
Creator
5 2,699
How are Electromagnetic forces created by a current?
Jun14-08 11:56 PM
jtbell
1 1,534
how does one calculate the velocity of an electric or magnetic field? obviously its not as simple as just taking the...
Jun15-08 07:27 AM
DaleSpam
26 3,007
Hellow, I came upon this problem when working out the power developed in the cylinder of a double-acting steal engine....
Jun16-08 04:15 AM
afternoonslow
0 2,665
I was recently casually tosing a fork in my hand so it completed a 360 degree rotation with the handle landing back in...
Jun16-08 09:07 AM
damo_clark
7 2,313
What are the general boundary conditions for nonviscous, incompressible fluid flow? I am trying to find the velocity...
Jun16-08 01:33 PM
JohnSimpson
2 2,114
Process is isenthalpic if there is no transfer of heat to (or from) the surroundings and no work done on (or by) the...
Jun17-08 09:31 AM
Count Iblis
0 1,687
Hey can neone tell me why this is so? I have not got the ans in any book i read... Thnx 4 replying
Jun17-08 09:37 AM
Count Iblis
8 9,902
Hi Can anybody explain why the top part of the body goes back when the car accelerates? Can you please explain in...
Jun17-08 11:08 AM
jablonsky27
11 1,920
In section 4 of Landau and Lifgarbagez they derive the expression for the kinetic energy by expanding the Lagrangian...
Jun17-08 11:35 AM
dslowik
1 2,135
A magnet will induce EMF when it passes through a conducting coil. Where does that energy come from? Does the coil do...
Jun17-08 07:32 PM
Doc Al
10 6,619

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