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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 47,882
1) If we charge a stacked capacitor like the one in the picture and then remove the leads (red and blue) what will be...
Sep22-11 04:53 PM
Philip Wood
3 962
while solving an exercise, i have found that they are considering the back emf of a motor constant although the...
Apr4-11 05:25 PM
epsilonjon
1 962
What is the physics of sharp turning; sharp curves and changing direction about those curves?
Sep18-05 02:54 AM
Dr.Brain
3 961
http://www.badongo.com/pic/3538078 When this machine takes 0.2 moles of a one atomic ideal gas through this cycle,...
May10-08 11:26 AM
kasse
0 961
Hello I'm new to this forum and i was wondering if anyone here can help me with a problem i'm having. I am...
Apr17-11 01:35 PM
rcgldr
2 961
I only know that a pure gas at same reduced temperature and reduced pressure will have same compressibility factor....
Nov13-12 11:23 PM
Outrageous
0 961
Hi, I'm very new here, 10min old, but the problem with my knowledge, or better, lack there of, at this time is very...
Dec2-12 04:27 AM
juvan
0 961
Hi! :) I'm trying to calculate the appropriate lenses to use for a project. I need to magnify a 50mm by 50mm...
Dec29-12 11:43 PM
kingkahuka
1 961
Hi!! WWhen i did the Bar graph experiment, i obtained a parabolic curve on negative and positive x axes (time...
Apr25-13 07:41 AM
GabrielMoon
4 961
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
11 961
Greetings I've been reading about these magnets such as these: http://www.lanl.gov/orgs/mpa/nhmfl/magnets.shtml ...
Nov11-08 10:14 AM
Enthalpy
1 960
Can anyone show me how to use impulse to solve any problem???
Dec12-08 07:23 AM
Doc Al
3 960
So for my textbook says that for the potential energy of two point charges to be zero (U=0), there must be an infinite...
Feb5-09 05:17 PM
Seraph404
0 960
Hello all, I'm currently working on some magnetic shielding, and my supervisor wants me to try and find an...
Jun14-11 06:16 AM
Born2bwire
5 960
since, B=curl(A), curl(E)= -\partialB/\partialt 1)curl(E)=- \partial/\partialt(curl(A)) 2)curl(...
Dec3-11 12:20 PM
sk2nightfire
0 960
Hello, This is kind of a simple question but if an EM wave is propagating in the positive x direction and the E field...
Dec16-11 08:59 PM
Simon Bridge
1 960
Lets suppose that we setup two instances involving two masses m1 and m2. m1 > m2 Case 1. The two bodies are...
Feb10-12 12:33 PM
IsometricPion
3 960
Hi, There are probably hundreds of books explaining (mathematically!!) how a directional coupler works....
Feb29-12 03:16 AM
kaps_nit
0 960
Why is the parabola the most bent, concave, effective mirror? What are some properties of a third order mirror...
May21-12 05:35 AM
xlearsi31
2 960
Hi, I have a quick question: Let's say I have a Lagrangian \mathcal{L} . From Hamilton's principle I find a...
May22-12 05:32 PM
Vargo
3 960
As charge moves around a circuit, their energy increases by each loop. However, I just heard somebody say the total...
May28-13 12:57 PM
DaleSpam
11 960
Second law of thermodynamics states that heat does not flow spontaneously from cold to hot bodies. But a cool...
May14-13 10:58 AM
Andrew Mason
8 959
Considering: 1. Sir Arthur Eddington once said: "If someone points out to you that your pet theory of the...
Jan13-09 06:05 AM
intervoxel
0 959
Hope iposted this question in the right spot!!!!. If i launched something in space and then stopped its forward...
Apr2-10 12:37 PM
LURCH
7 959
http://www.grc.nasa.gov/WWW/BGH/reynolds.html (Reynolds Number)=(Inertial Forces)/(Viscous Forces) My question...
Sep8-10 03:45 PM
luckis11
6 959
Can anybody help me that how to work out the direction of Lorentz Force? Should I work out from the formula? Thanks.
Sep15-10 12:34 AM
Born2bwire
2 959
Hi, all Would you guys recommend some books on the subject of nonlinear physics? And how is the recent progress...
Jan2-12 10:22 AM
Filip Larsen
6 959
A positron and an electron are simultaneously fired from paralle particle accelerators a distance d apart, with equal...
Feb7-12 06:19 AM
clem
2 959
Hey, i have a Thermo exam tomorrow, and i've been working through the textbook examples and problems, and i was...
Feb19-12 10:00 PM
PhysicsGod
1 959
I just read that Centrifugal Force is a false force. It does not exist. Inertia (which is not a force) is mistakenly...
Mar12-12 05:59 AM
tiny-tim
2 959
hi im really confused about the exact heat transfer mechanism of the phenomenon i observed the situations simple:...
Mar21-12 03:00 PM
uniqueboy
0 959
I have a question that involves two electric dipoles that are situated at the origin and are perpendicular to each...
May19-12 12:11 PM
neebah
0 959
What properties of an inductor change in a low temperature environment. Specifically in the -100 through -70 degrees...
Jul11-12 06:31 PM
berkeman
1 959
http://www.youtube.com/watch?v=E185G_JBd7U At 37:00 he charges a conductor with a dielectric inside, removes the...
Feb17-13 03:58 AM
vanhees71
4 959
I'm working on a project for myself in regards to atmospheric reentry. I've come across some equations that describe...
Apr9-14 08:41 PM
Rd123
11 959
Sorry if the formulation is imprecise, I'm a biology major trying to study some physics. The question is: So far,...
Jun27-13 07:39 AM
boneh3ad
3 959
Edit: Apparently Coulomb's law only holds for electrostatics... in that case I understand that this problem is...
Feb17-10 07:12 PM
torquil
1 958
For a horizontal spring mass system is the frictional force considered negative (-μmg)? i guess it will be negative;...
Apr22-12 12:16 PM
sphyics
4 958
So I'm just reading through a high school Physics text, essentially, and I have these four general question as I learn...
Jul26-12 07:46 PM
DaleSpam
1 958
I've theoretically proved that heat to work can be converted at 100% efficiency by proposing a system, named as the...
May3-13 06:59 AM
Vanadium 50
7 958

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