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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 46,034
Consider a case where 2 people are in a car driving in a straight line at sufficient speed. At some point the driver...
Jul9-09 05:20 AM
8 1,480
How do you calculate amount of power needed to slowly rotate shaft under bending moment? This is not related to...
Jul8-09 11:59 PM
1 2,612
If you have a certain number of particles such as a few electrons and protons in an area, how would you determine the...
Jul8-09 11:09 PM
2 619
Hi! I'm interested on how a 45-gallon drum (filled with air) behaves when submerged in water. I did some...
Jul8-09 10:38 PM
9 6,734
Can anyone help explain how to convert velocities to different co ordinate systems? I've always been shocking at...
Jul8-09 10:33 PM
8 12,115
Tell me what makes electron have a charge , what is that property of electron due to which there is attraction...
Jul8-09 04:30 PM
5 745
Hi all. Could anybody please advise me some good books on Thermodynamics to begin with? My current level of Physics...
Jul8-09 03:25 PM
1 1,119
Does anyone know how to derive the following: \nabla x \vec{V} = -k...
Jul8-09 02:39 PM
0 575
Consider a toroidal solenoid powered by a sinusoidal voltage. This will lead to appearance of sourceless electric...
Jul8-09 09:12 AM
6 1,076
My specialization is Mechanical engineering. So I'm dumb to many of the electromagnetic concepts. But right now, I...
Jul8-09 08:11 AM
Andy Resnick
9 2,492
is there any one who wants to chat about it ? iv tried once here and got not 1 reply, not even the YOU HAVE DONE IT...
Jul8-09 07:39 AM
1 706
Hi all, I was wondering if anyone knew, or if anyone knows where I can find, the maximum magnetic field that a micro...
Jul8-09 07:05 AM
2 1,429
Hi, I'm a beginer with COMSOL. I work in diffusion process and I's been trying to simulate with COMSOL a very simple...
Jul8-09 04:30 AM
0 392
Hi There I'm wokring on a miniature steam car ~0.7kg. I've decided that I would like to investigate the feasibility...
Jul7-09 10:53 AM
Nick Bruno
4 1,471
Can a magnetized ship go to the South Magnetic Pole on its own accord? Let's say it is currently located in the...
Jul6-09 07:00 PM
8 1,564
Can anyone explain how to relate the bunch length and energy spread of a bunch in an electron storage ring to the...
Jul6-09 03:56 PM
Bob S
1 909
Hi! I'm working on a thing that could be simplified as a pendulum standing straight up. I've found some formulas on...
Jul6-09 02:31 PM
Bob S
2 678
I need an explanation that relates the equation to what I learned about the dot product of two vectors being the...
Jul6-09 01:21 PM
36 2,792
I have two spectra of a star across the visible and NIR. One spectrum comes from an online resource (CALSPEC) for...
Jul6-09 10:36 AM
2 702
can some one explain what chromatic dispersion is? and it helps me finding which colour radiates more heat in the...
Jul6-09 07:51 AM
Andy Resnick
1 1,047
What is the difference between eigenfriquency and normal mode? If, for example, I solve the secular equation (from the...
Jul6-09 06:08 AM
3 9,127
i want to ask can i model sloshing of fuel in satellite feul tank , to an energy sink model.... can anybody...
Jul5-09 07:38 PM
6 803
I though you might like a light break to solve a problem probably more interesting than the author intended. This is...
Jul5-09 08:49 AM
Jimmy Snyder
5 1,402
can some one explain me why,center of mass of an object can lie outside the surface of the object also?
Jul5-09 07:48 AM
6 1,181
Hi if i have lets say a rod swinging on a pivot, and i calculate the moment of inertia around the axis, which is...
Jul5-09 03:21 AM
8 875
I was thinking about it, and the only thing I could come up with is that it reduces friction with the surface the...
Jul5-09 12:29 AM
22 3,928
I've read the physical explanation for this eq is that magnetic monopoles do not exist. A poor explanation in my...
Jul4-09 09:28 PM
Count Iblis
46 3,391
Here are more unknows need to slove while I had only two equations which are sum of force on y-asix = 0 and sum of...
Jul4-09 12:41 PM
7 1,330
I'm looking for one clear, simple mathematical definition of action-angle variables. I believe they are also called...
Jul4-09 12:55 AM
1 1,989
I found interesting to me this topic and tryed to analyze. At...
Jul3-09 03:23 AM
5 2,025
When you drop a (strong) magnet into a copper pipe, it slows down. Is there an equation for calculating the force? I...
Jul2-09 05:42 PM
9 7,848
Hello, I read somewhere that the second derivatives of coordinates in Lagrangian would violate causality. Why is...
Jul2-09 11:36 AM
4 1,124
Dear all, I have a doubt on the validity of one of the Maxwell's equations, the one that states that the divergence...
Jul2-09 06:35 AM
5 714
Does anyone know of a treatment of Lagrangian and/or Hamiltonian mechanics that would be accessible to someone who is...
Jul2-09 03:07 AM
1 1,009
Hi all. I am trying to understand how a tunable Fabry-Perot interferometer works. This is what I have understood so...
Jul1-09 06:00 PM
Bob S
11 2,167
I am trying to bridge a gap between Maxwell equations and Lorentz force. I know that they are not independent and in...
Jul1-09 05:36 PM
Bob S
19 4,473
Hello Forum , i have a Polygonal mirror with 6 facets of mirrors , i am working in a project for a scan system without...
Jul1-09 07:50 AM
Andy Resnick
1 572
Two aluminium plates, each 150 x 150mm, were separated by 100mm to create a form of parallel-plate capacitor. A DC...
Jul1-09 04:21 AM
7 2,195
I've seen one derivation on Feynman Lectures on Physics, but the derivation is not really rigorous(he took a very...
Jun30-09 07:50 PM
4 2,476
I find that there are two ways in which the relationship between electric field intensity and potential are expressed...
Jun30-09 07:28 PM
6 14,801

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