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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 47,867
Hi, I'm looking for some help in calculating the amount of force from natural gas exploding. Part of the problem is...
Mar30-08 04:26 PM
1 778
Now suppose we have two conductors A and B. A has a charge of +2 and B has a charge of +8. If we let the two...
Mar30-08 01:56 PM
5 1,186
I am having a problem with some thermodynamics calculations. I am not very experienced with them and it certainly...
Mar30-08 12:49 PM
0 932
Hello I attach a question (PDF-file) which I found in an old physics book, I printed the question and re-generated...
Mar30-08 10:48 AM
4 1,024
Question on Magnetic polarization Is it possible to hear/record the sound created by the shifting of the alignment...
Mar30-08 10:15 AM
1 986
Many of us have seen how to find a vector satisfying the following conditions (i) magnitude is m (ii) makes angles...
Mar30-08 07:26 AM
13 8,191
Well, I think this one is pretty simple, but still, I don't know how to solve it. We all know that for uniform...
Mar30-08 06:58 AM
3 935
It's widely known that the electromagnetic wave equation admits of time-advanced as well as time-retarded solutions,...
Mar29-08 09:32 PM
0 543
I am writing an essay in which I try to describe Centripetal Force to a layperson. Since I am a layperson myself, I...
Mar29-08 07:32 PM
11 2,562
If F denotes the central force and is given as the inverse of the square distance F=-k/r^2. where k>0. How can i show...
Mar28-08 09:24 PM
Shooting Star
1 951
My professor brought this up in class the other day, but has yet to elaborate on it and i can't stop thinking about...
Mar28-08 01:28 AM
6 2,833
As I've been studying up on EM radiation, I've come to the conclusion that radio and light waves are not the same...
Mar27-08 03:53 PM
18 16,999
Hi, I was just going over some equations for velocity with respect to bodies revolving around the sun. I wanted to...
Mar27-08 09:56 AM
4 4,859
Hello to everybody! I would like to find out how valves work but I can`t find detailed information through Google. ...
Mar27-08 09:10 AM
8 2,413
An infinite string with linear charge density \lambda is put parallel to the axis of an infinite conducting grounded...
Mar27-08 07:14 AM
3 1,681
Ok, let me try to state this properly (I don't know much about this, so try to understand what I am trying to say...
Mar27-08 03:13 AM
2 981
Let us consider a lift which is moving with a constant acceleration with a man inside. Now we know that the man...
Mar26-08 06:55 PM
8 4,260
Some examples in text book make me confused when these two works are discussed at the same time. One of the works...
Mar25-08 12:42 PM
4 1,088
Hi, I have some questions about this equation. P + (1/2)mv^2 + mgh = constant. So obviously (1/2)mv^2 is the...
Mar25-08 08:34 AM
13 3,025
Hi, This is my question: why is in the middle of ice, white ? (have you noticed ?) I guess the reason must be...
Mar25-08 08:00 AM
Andy Resnick
4 2,061
It is often said that Maxwell's equations in differential form hold in special relativity while Maxwell's equations in...
Mar24-08 04:41 PM
0 1,146
I've been trying to figure out how I can start with the Navier-Stokes equation and end up at the Reynolds Transport...
Mar24-08 07:58 AM
Andy Resnick
2 2,053
I read that charge resides on the outer surface of a charged (electrically) body. Is it meant only for charged...
Mar24-08 12:15 AM
7 3,175
What exactly is meant by universal law? I have read in a book a that Ohm's law is not a univeral law. I somewhat...
Mar23-08 08:31 PM
15 3,264
can someone explain the the relationship these have to each other? i know that they are either proportional or...
Mar23-08 10:52 AM
2 2,501
1. Feynman says all of electromagnetism follows from Maxwell equations. 2. Somebody (Pointing to a Feynman diagram of...
Mar23-08 08:21 AM
1 2,015
hi in what direction does the electrostatic force act when we insert a dielectric within a capacitor? and when we...
Mar22-08 09:10 PM
2 1,936
Hi, I'm trying to build a physics simulator right now its just doing launching an object a a certain velocity and...
Mar22-08 04:59 PM
4 3,158
I have read that hot gases flow better than cold gases. Why is this so? Less dense? Any good readings on it. I...
Mar22-08 03:17 AM
6 5,631
Why entropy is a state function ?
Mar21-08 12:53 AM
1 806
I always wondered why time wasn't more of an issue in thermodynamics. for example, if I have a metal at temperature...
Mar21-08 12:45 AM
17 3,232
hello everyone Consider extinction coefficient k, n becomes N=n-ik. the text book says NsinA=N'sinB still holds...
Mar20-08 10:28 PM
5 6,957
The Bernoulli Equation for non-uniform flows have a constant at the kinetic energy term which describes the velocity...
Mar20-08 02:47 PM
4 6,023
Ok so i have looked and looked for a simple way to under stand how to find drag using the coefficient of drag. the...
Mar20-08 01:34 PM
5 1,397
Are "direction of force" and "plane of application" valid concepts in mechanical physics, or are these terms I've made...
Mar20-08 01:17 AM
4 4,979
Let us charge a capacitor and disconnect it from the battery. Let the capacitance, charge and voltage of the...
Mar20-08 12:29 AM
5 1,177
Hi All! I was hoping you guys might be able to point me in the right direction... I'm after a online calculator...
Mar20-08 12:07 AM
2 10,632
Hello everyone, I am dealing with a tough problem. I place a pencil on the edge of a table and I hit it. I want it to...
Mar19-08 07:22 PM
15 2,066
Hello All, I have had some interest in the effects of rotating magnetic fields and was doing some research on the...
Mar19-08 06:05 PM
0 1,629
So, I believe I've got the math part down but, I'm having trouble understanding the theory. Can someone briefly...
Mar19-08 04:22 PM
2 2,879

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