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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 47,884
I'm wrestling with the question of dragon flight and whether it would be possible/feasible. I've read the book "the...
Jul22-08 10:38 PM
huggy bear
7 3,157
I wish to understand evaporative cooling. Apparently the principle consists in pumping the vapour above a bath, hence...
Jul22-08 07:06 PM
Angelos K
4 2,779
Hello, I have a little project I'm playing with that involves calculating a series of forces and summing them to...
Jul22-08 10:30 AM
graffy76
2 4,254
It's been a while since I've been in the classroom and I'm having trouble figuring this one out. I'm trying to create...
Jul22-08 10:04 AM
mgb_phys
1 3,376
So... am I understanding this right? Does Lenz's law suggest that the velocity of a magnet dropping (gravity) into a...
Jul21-08 11:18 PM
vanesch
1 1,090
Here's a silly question I ended up thinking about. Maybe I learned it in college, but it's long forgotten by now ^~^;...
Jul21-08 09:32 PM
tuoni
4 1,207
Hi What do the 4 equations say in words? not in math but in words that explains the meaning of them. thanks
Jul21-08 08:50 PM
Gear300
5 2,106
... with all this drilling equipment and an idea, albeit a dumb one. Big tube, through the moon. Big permanent mag...
Jul21-08 04:39 PM
russ_watters
13 1,829
How does dissvoled gas bubbles move in solution? I want to do a computer simulation on nucleation so i am trying to...
Jul21-08 11:03 AM
Vanadium 50
1 1,097
What is charge?
Jul20-08 05:31 AM
CompuChip
1 907
First, to preface this, I have never taken any formal engineering courses, and I don't remember the physics class I...
Jul20-08 12:05 AM
rcgldr
4 4,013
Can someone explain me how to extend Hamilton's principle to non-holonomic system's thru the lagrange undetermined...
Jul19-08 02:10 PM
gdp
1 2,578
Where can I find online a good set of rigid body dynamics exercises? Thanks.
Jul19-08 06:05 AM
Bert
2 1,267
Hi, folks. I am looking for some help to understand the physics of a water pendulum (in fact, I don’t even know if...
Jul18-08 09:39 PM
luke
1 2,397
I am trying to calculate the E-field from a varying B-field. The B-field is from a current loop. ...
Jul18-08 09:03 PM
luke
4 3,753
Has anyone heard of anyone trying to conduct the double slit experiment with a barrier between the two slits that goes...
Jul18-08 06:41 PM
pallidin
3 1,170
Can anyone please tell me whether the temperature measured from Wien's Displacement law/Planck's Radiation...
Jul18-08 02:55 PM
Andy Resnick
10 1,884
I don't know if you guys have heard that, when a railroad car is about to start moving, railroad operators sometimes...
Jul18-08 11:54 AM
berkeman
4 3,755
hi, I'm a web developer so i usually stay in front of a computer for almost 12 hrs a day. my question is, when i...
Jul17-08 10:06 PM
DaveC426913
1 1,145
I'm trying to figure out what the stress level of a wakeboard is when it hits the water upon landing. I'd like to be...
Jul17-08 04:46 PM
ugly
0 2,834
Could someone show me the simple formula, showing how quickly an item sinks in water. Presumably the formula...
Jul17-08 11:59 AM
bemortu
4 3,159
I have a conceptual question regarding the self-induced emf in a solenoid coil. I have attached a graphic from...
Jul16-08 09:44 PM
Defennder
6 1,965
Hi, I am going through a book on thermal physics (specifically on a section on the 2nd Law) It talks about...
Jul16-08 08:45 PM
juanedilio
2 2,154
Dear all I am a secondary and sixth form teacher in London and I have come across a puzzling situation involving a...
Jul16-08 04:18 AM
mklein
2 1,145
Here is the situation. A large electric motor has a long rod attached at a 90º to the motor shaft and is accelerated...
Jul16-08 12:46 AM
russ_watters
3 1,344
If say a cylindrical piece of material with a high yield strength is compressed in a vice with a force approaching the...
Jul15-08 10:17 PM
stewartcs
2 1,407
I was playing around with some manipulations of maxwell's equations and seeing if I could work out the wave equation...
Jul15-08 05:00 PM
Andy Resnick
3 964
Hi. I'll start off by saying I have a background in mathematics, but not in physics. If I use the wrong term, I...
Jul15-08 02:17 PM
rcgldr
5 1,182
Hey everyone. First post here. Sorry if this is the wrong place. Force calculation seems to fall under classic...
Jul14-08 11:33 PM
lukahn12
2 1,159
Are there any other math/physics/engineering runners out there who are interested in collaborating on an effort to...
Jul14-08 06:19 PM
juliasantanna
1 4,722
Hello! I'm very new to these forums so please pardon my ignorance. When you twirl a mass on a string horizontally...
Jul14-08 05:56 PM
Doc Al
6 2,455
Why do we apply law of conservation of linear momentum on a body that explodes in air when an external force,...
Jul14-08 08:35 AM
pardesi
8 2,479
Hi all, Some time ago I watched this video about an intra-terrestrial elevator. It is about a theoretical elevator...
Jul14-08 06:06 AM
Gear300
4 1,397
Hmm how does one prove that a lagrangian is a function of just the generalized coordinates and the generalized speed...
Jul14-08 03:19 AM
pardesi
2 1,164
BACKGROUND: I am doing an experiment determining the young's modulus of a cantilever through principles of SHM (i.e....
Jul13-08 07:05 AM
tiny-tim
4 4,185
1975 the roof of the Montreal Velódromo which weighed 3.7x107N was raised 10cm to be centralized. What the work...
Jul12-08 10:10 PM
kateman
1 1,430
There is a EM radiation of frequency suppose x Hz.Let it has to travel a distance of y m.Now what's the time required...
Jul12-08 06:10 PM
Andy Resnick
3 1,340
Hi. I'm having some problem solving this problem: Consider a 3 body elastic collision; 3 bodies on 1 axe; both have...
Jul12-08 06:16 AM
BobMonahon
1 3,311
Can anyone give a simple explanation to generalised cordinates in Lagarangian/hamiltonian mechanics
Jul11-08 03:02 PM
Oberst Villa
2 1,227
For an ideal gas PV=nRT where n is the number of moles show that the heat transferred can be written as: dQ =...
Jul11-08 10:43 AM
Andrew Mason
1 1,438

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