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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 46,790
Hello-- Suppose that I insert a thin-needle thermometer into a porous material (such as snow) that consists of air,...
Aug23-09 11:05 PM
6 1,100
I'm reading the book "Electricity and Magnetism: Vol. II" by Edward M. Purcell, in which he describes Gauss' law as...
Aug23-09 10:10 PM
3 1,048
I've learned that the electrostatic force is about 10^{39} times greater than the gravitational force. I guess the...
Aug23-09 11:35 AM
15 1,330
Hi, Is it possible to have a magnetic field B which has curl B = 0 in all space? intuitivly such a field will be...
Aug23-09 02:08 AM
4 5,134
I was unfortunate enough to have sports on the days of my mechanics classes so I've basically missed most if not all...
Aug22-09 11:52 PM
3 795
Hey guys, I have the following (non-homework) problem: I am simulating a collection of normally distributed...
Aug22-09 08:37 PM
1 742
I am trying to work out the physics used in a micro-controller project. I am having problems with even simple...
Aug22-09 12:43 PM
2 851
Hi guys, I am reading Reif's book on statistical mechanics and have a question on the H theorem. In section 2.3, Reif...
Aug22-09 12:39 PM
10 1,853
Or how did Coulomb measure quantity of electricity while doing his experiments that leads him to claim his famous...
Aug22-09 11:39 AM
Bob S
4 1,446
Hi, I'm not sure this falls under the homework category, but I posted this here because I think this is more of an...
Aug22-09 11:14 AM
5 2,660
if a system is made of 3 atoms with no degeneracy with energy levels of fro example 0, e, 2e would it be safe to...
Aug22-09 08:58 AM
Count Iblis
4 696
Is it true that partition function for canonical ensemble is Z=\sum_{\{states j\}}e^{-\beta E_j}=e^{-\beta F} ...
Aug22-09 08:49 AM
Count Iblis
9 1,290
My question is what causes death wobble? Let me explain more... The vehicle I've experienced this on is a Jeep with...
Aug22-09 04:03 AM
19 15,648
A classic problem in freshman electrodynamics is as follows: We have a capacitor (capacitance C1) charged up w/ charge...
Aug21-09 09:22 PM
Bob S
4 1,114
Hello Everyone, Recently, I was trying to explain the fundamentals of thermal radiation to a non-engineer and I...
Aug21-09 02:03 PM
2 866
Is there an other liquid that was similar water(In Convection current) but without the conductivity of it?
Aug21-09 12:14 PM
17 4,452
Here is an invention I'd like to share with anyone who has the money to develop and market it. Furthermore, I don't...
Aug21-09 09:18 AM
1 610
Let us consider a wheel which rotates about an axle thorugh its center with an angular velociy \omega0. After sometime...
Aug21-09 07:17 AM
2 1,690
This is my first post so I hope I'm putting it in the right section :redface: I searched for similar questions but...
Aug21-09 02:34 AM
5 1,241
A steam engine stove produces, say, 10 units of warmth, the second law states that not all warmth can be converted...
Aug20-09 02:55 PM
6 1,652
I was curious about how exactly energy was transferred in electrical circuits because all my texts were inadequate....
Aug20-09 10:23 AM
3 1,307
I need to find a means to calculate the load on three or four ropes that are supporting a weight between them. These...
Aug20-09 06:53 AM
9 3,986
In what kind of instances would the quantity of impulse be used? My text book says that it's when very large forces...
Aug20-09 03:37 AM
4 755
I was studying avometer, and came across this paragraph which I find confusing: "The voltage measuring part of the...
Aug20-09 02:51 AM
1 1,271
In essence, Beers law describes the behavior of a quantity where the probability of a unit of that quantity over a...
Aug20-09 01:56 AM
John Creighto
0 1,449
Hi, Let E(r,t) = E(r)exp(-ikz)exp(iwt) be a plane wave in time domain, propagating...
Aug20-09 12:28 AM
2 1,078
Every coil have more than one layer.All coils are coaxial. I kown all their dimensions ,turns,layers. I use...
Aug19-09 09:37 PM
0 624
In the kinetic theory of Gases , we rely purely on classical mechanics. We derive the equations using classical...
Aug19-09 07:35 PM
2 703
I'm designing a paddle wheel drive house boat and need to do some calculations to see if the parts I have on hand can...
Aug19-09 03:32 PM
0 3,645
I was told that you need a low voltage, high amperage taser to make any damage. I know that touching devices with high...
Aug19-09 02:44 PM
John Creighto
6 21,835
ive been trying to do this question all summer to no joy. ive got a flywheel in motion which then has a torque...
Aug19-09 06:41 AM
2 1,217
Quantities, like photons, alpha/beta particles, can travel with a billiard ball like behavior. There are two...
Aug19-09 03:22 AM
John Creighto
0 592
we've been studying te physics involved in bungee jumping. We went to a bungee site, and recorded data, such as length...
Aug19-09 02:32 AM
10 2,098
1)What is the formal definition of a point charge? It is known, that coulomb's law , is valid for point charges? But...
Aug19-09 02:08 AM
4 1,642
Hi ive been having an argument with a few friends about a theory of mine (based on what i can remember from my physics...
Aug18-09 11:34 PM
16 5,148
I'm confused by coarse and fine grained entropy and how they're related to the standard Boltzmann and Gibbs equations....
Aug18-09 10:18 PM
SW VandeCarr
1 2,020
This is a physics and math problem The representation of a vector as a straight ray is problematic Imagine an arc of...
Aug18-09 03:07 PM
1 522
I recently watched the Feynman Messenger Lectures on project tuva. I hope some of you have watched the second video...
Aug18-09 11:27 AM
4 1,626
Dear all, I've found in many books forces acting between 2 parallel wires, but not between a magnetic field and a...
Aug18-09 02:06 AM
4 657
Let's say there is flat floor at y=0 . There is a rectangle of which two vertices are at (0,0) and (w,h). There is a...
Aug18-09 01:23 AM
4 763

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