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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 47,913
When I have an ideal mixture of 2 liquds, A and B. so the partial pressure of A is PA=PA°xA while for B, it's...
Jul28-13 09:35 AM
Chestermiller
27 2,267
for RF, how does this mechanism work? http://i.imgur.com/Crx4Amx.png how does the conductor do this? and why...
Jul31-13 10:45 AM
Enigman
9 856
Rusty on the math... I am working on a problem and need the derivation of a free fall trajectory for an object at...
Jul29-13 03:06 PM
Creator
8 703
Hi, Suppose we look at two dimensional Poisson's equation in a medium with spatially varying (but real) dielectric...
Jul27-13 07:21 AM
Chestermiller
1 541
I've been told (since high school I think) that "view angle" in a 2-dimensional plane is approximately (distance to...
Jul29-13 08:03 AM
Andy Resnick
6 1,380
why is force equal to rate of change in momentum rather than rate of change in kinetic energy. If we consider time is...
Jul28-13 08:13 AM
bodhi
16 1,101
The potential due to a polorized distribution is given by: V( \vec{r}) = \frac{1}{4 \pi \epsilon _{0}} \int _{V}...
Jul29-13 03:45 PM
DrDu
20 1,028
When considering electric field in a dielectric media,there are two forms of Gauss's law: \oint \vec{D}\cdot\vec{d...
Jul27-13 08:40 PM
Simon Bridge
13 688
I am just reading through this free online textbook and it seems to me that there is a mistake on page 24. ...
Jul26-13 06:19 PM
Redbelly98
3 425
In this video at 7:15 you see a rifle fired underwater: cp5gdUHFGIQ Apparently even before the bullet leaves the...
Jul31-13 10:07 AM
A.T.
20 1,516
Hey all! I'm building a simple low cost Fourier Transform Infrared Spectroscope as a summer project. for those...
Jul27-13 06:24 PM
Drakkith
1 411
I am not sure I get the concept of centrifugal force.. If we have a stone tied to a thread and we just spin it in a...
Jul30-13 12:03 AM
DaleSpam
35 2,113
I am interested in the main difference between transitions from electric fields from Conductive to Conductive/...
Jul29-13 01:51 AM
DrDu
1 363
How to find the linear dispersion of a Direct Vision Prism with given parameters?
Jul29-13 10:46 PM
itsnaresh
0 338
Hi guys, After reading a paper about electron scattering, I became very interested. So if an electron is...
Jul30-13 10:02 PM
Simon Bridge
6 599
State and justify the techniques you would use to reduce the errors of the following. Each explanation should show a...
Jul27-13 11:24 PM
Simon Bridge
1 558
I think no matter what are the mass of two objects, there must be a fix angle between the angle of two direction. Is...
Jul28-13 02:02 AM
Outrageous
4 790
Hi All! I've been doing some research in an attempt to uncover the proportionality between usable traction, which is...
Jul29-13 06:08 PM
tduell
2 518
i think i've asked this a number of times on different posts stemming from various discussions but i don't think this...
Jul28-13 07:54 PM
Drakkith
2 475
Since every mass attracts every other mass according to Newton's universal law of gravity, why don't I just get pulled...
Jul28-13 08:05 PM
Drakkith
8 786
harmonics... got it.. but for instruments, whether they have a sound cavity (brass instrument or woodwind) or a...
Jul28-13 06:27 PM
turbo
6 502
Hello everybody! I read that if one of the two materials involved in Snell's law is a conductor, the refraction angle...
Jul31-13 05:41 AM
EmilyRuck
10 910
Does any body here have any information about gravitational vortex power plant..?
Jul31-13 11:22 AM
Drakkith
7 752
Good afternoon all My question is, when we observe stationary waves, and we know that at a certain point, the sound...
Jul29-13 03:58 AM
Bobbywhy
1 648
How exactly would you describe the principle of a valve for flow control? In a globe valve for example the fluid...
Jul30-13 04:28 AM
gmax137
5 750
Hi all, I notice the patterns such as v = 0.5at^2 and PE(spring)=0.5kx^2, etc...but, all examples I have seen show...
Jul29-13 10:08 PM
PhanthomJay
4 454
I think everybody here knows the equation that gives the potential of a point like dipole, but how does the field look...
Jul30-13 02:03 AM
DrDu
1 386
What's the difference between cold moving air and hot moving air? For instance, suppose you put two fans, of the...
Aug1-13 11:18 AM
russ_watters
11 965
Hi All, I'm having a bit of trouble remember basic physics and hoping someone can help If i've got the wrong...
Jul29-13 08:50 PM
basil4j
0 390
Batters swear that batting gloves improve their performance. From a physics standpoint, why is this? My impression...
Jul29-13 10:09 PM
Simon Bridge
1 353
Hi PhysicsForums. I have a question. I was looking through a manual for an industrial grade PC, which is fanless,...
Jul30-13 02:31 AM
256bits
2 418
http://en.wikipedia.org/wiki/Gradient#Cylindrical_and_spherical_coordinates which formula do we apply to get the...
Jul31-13 06:37 AM
igorronaldo
4 538
The following are Maxwell's Relations right? \left(\frac{\partial s}{\partial v}\right)_{T} = \left(\frac{\partial...
Jul30-13 09:15 AM
jtbell
1 422
I am trying to study the motion of a falling body in the earth’s gravitational field however not assuming a constant...
Jul31-13 02:43 AM
rcgldr
10 542
Hello forum. I am finding it hard to wrap my mind around the concept of power when considering forces. We can...
Jul31-13 11:29 AM
Drakkith
3 675
So, I was wondering if a conducting loop was placed in orbit around the Earth would it be able to generate a current?
Jul30-13 10:24 PM
Simon Bridge
1 781
Hi all, Any ideas how to solve this integral? $$ \int_{0}^{\pi}...
Jul30-13 08:18 PM
klawlor419
2 493
Trying to get my head around something with the Darcy Weisbach. It is used to calculate the head loss of a moving...
Jul31-13 06:57 PM
SteamKing
1 554
Please watch 05:00 to 08:00 http://www.youtube.com/watch?v=jbmFcGhTnS0 Force = Mass x Acceleration So for...
Aug1-13 08:13 AM
DaleSpam
30 1,859
I'm curious what models there are for calculating the Electric Susceptibility in crystalline solids and any books that...
Aug1-13 01:56 AM
DrDu
1 533

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