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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 41,831
What is the potential energy of a uniformly charged spherical shell; i think it is called the self energy of shell.
Feb3-08 11:19 AM
Shooting Star
13 9,885
Hello, everyone. I've been working with this physics problem for about a week without much success, and this looked...
Feb3-08 10:22 AM
DaleSpam
4 1,495
Hello i need this för a coding project im currently occupying myself with =) ok so the system is in a 2D space, the...
Feb3-08 10:03 AM
DaleSpam
4 4,223
Hello! I have a question arising from my course in statistical physics: Describing microcanonical, canonical and...
Feb2-08 04:17 PM
Mapes
3 1,513
So I'm reading "Mathematical Physics" by Donald H. Menzel, and I don't buy the following derivation from ...
Feb2-08 01:46 PM
John Creighto
2 1,843
Got this question somewhere: A boy is standing on a rotating platform. The system has a kinetic energy 'K'. Now, the...
Feb2-08 12:34 PM
lightarrow
5 1,336
Consider int(E.dA)=q/e, guass law relating the electric field to the charge enclosed. One can also derive (using...
Feb1-08 10:23 PM
user01
6 2,867
In classical Hamiltonian mechanics, the concept of a canonical transformation ("CT") preserving the form of...
Feb1-08 06:29 PM
strangerep
0 1,263
Hello All, I am new to this forum, and right up front I will say I know very little about physics in general. That...
Feb1-08 11:28 AM
Andy Resnick
1 1,437
in my fields course we are using the metric tensor g=diagonal(1,-1,-1,-1), off diagonal(0) i'm looking for an...
Jan31-08 09:44 AM
jcsd
4 1,579
what is the difference between classical mechanics and quantum mechanics?? other than that classical mechanics...
Jan30-08 03:35 PM
samalkhaiat
14 2,390
I'd like to see an example of a formula describing the position of a rolling ball over time. It has been given one...
Jan30-08 03:15 PM
PatPwnt
3 2,324
Is there any material such that if you make a hollow object out of it, the magnetic field inside is not equal to the...
Jan30-08 12:02 PM
Ulysees
9 11,465
Is there any situation where the electric field drop exponentially in free space? thanks
Jan30-08 10:54 AM
jdavel
5 1,864
Hi, (All oscillations I'll be talking about here are longitudinal.) For coupled oscillations of 2 masses between...
Jan30-08 07:05 AM
pam
1 1,902
If not, then what are the conditions for us to construct a periodic boundary condition(PBC)? If so, then please help...
Jan29-08 10:07 AM
qijiongli
4 4,241
Hello All, I just read in a book that springs are pretty much analogous to capacitors in terms of energy...
Jan29-08 07:47 AM
TVP45
1 3,340
Hi all. Picture a series of strings around a circle, oscillating with fixed ends. Now picture a these strings as...
Jan28-08 10:40 PM
SteveDB
0 1,142
I'm looking to simulate a bouncing and spinning ball in two dimensions. I have the detection working fine but I'm...
Jan28-08 10:23 PM
gcoope
0 1,592
I am constructing a 'white line detector' to use on the underside of a robot. The crucial components are an...
Jan28-08 11:45 AM
joeisthedude
0 3,217
I'm attempting to write a simple model to describe the angular velocity profile (aka angular acceleration) of a...
Jan28-08 09:20 AM
vortmax
3 2,387
Hello, I am a computer science researcher and I have had my last physics and math courses several years ago so I...
Jan28-08 03:31 AM
wmac
0 1,614
If I have a vector for the angular momentum of a ball rolling along a plane in terms of the world and I wan't to...
Jan28-08 02:41 AM
Bobolis
0 6,073
What would wobble more easily... a thin hoop or a solid disk of the same mass? A solid disk will have a lower moment...
Jan27-08 11:07 PM
jambaugh
2 2,031
Hello, is it possible to create a pressure wave from any form of electromagnetic radiation that travels inward to a...
Jan27-08 03:01 PM
plutoisacomet
3 1,734
I am actually trying to solve a problem from fluid mechanics. The especifications of the problem are on the...
Jan27-08 01:19 PM
DaleSpam
1 2,388
The force on a single dipole (dipole moment m) can be obtained by taking the gradient of its energy, i.e. \vec{F} =...
Jan27-08 11:09 AM
da_willem
2 1,394
Why does the following hold? \int _0 ^H \nabla H dH =0 The book I'm reading (ferrohydrodynamics by Rosensweig)...
Jan27-08 04:00 AM
da_willem
0 1,623
Here I have a translation from French to English of the original paper by Poisson about his brackets. I cannot...
Jan26-08 03:27 PM
gibsonphysics
2 1,238
A horizontal cylinder is fit with a frictionless and massless piston. Inside the cylinder there is a mono-atomic gas....
Jan26-08 11:07 AM
Hootenanny
1 989
Is it possible to obtain the relation S = \log Z + \langle U \rangle /T directly from the Boltzmann distribution? ...
Jan26-08 09:48 AM
Argyle
6 7,635
I was wondering, can the friction force be split up? Suppose you have a friction force working under an angle alpha,...
Jan25-08 05:41 PM
NoobixCube
4 1,727
(I know that it's easier to get water to boil att lower pressure...) The goal is to get the water to an temperature...
Jan25-08 07:54 AM
RonL
11 3,540
if we think the height of a matter reaches over the radius of the earth how will the potential energy of it change?...
Jan25-08 05:43 AM
sandoko
5 3,628
When can you define temperatures for the molecular energy storage modes (i.e. translational, rotational, vibrational)?...
Jan24-08 09:10 AM
pkleinod
1 1,497
I tried posting a similar question before, however, I've found the 1 reply is actually wrong. Hopefully with better...
Jan24-08 08:16 AM
Andy Resnick
2 12,897
For non-equilibrium conditions, can temperature be defined? Does this relate to the zeroeth law of thermo? Thanks!
Jan23-08 03:25 PM
Andy Resnick
1 1,924
What is the speed? If the speed of electricity is c, then how is it possible that an electron, with a rest mass, can...
Jan22-08 05:37 PM
chroot
17 4,248
Hello! Would you say that the following text is true from beginning to end?: ----------------------- Basically,...
Jan22-08 05:06 PM
fortaq
2 2,753
According to Noether's Theorem, for every symmetry of the Lagrangian there is a corresponding conservation law, and...
Jan22-08 05:34 AM
lugita15
26 3,494

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