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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 47,792
I am programming an addon for a space game/simulation (Kerbal Space Program) and I am looking for some help with a bit...
T 09:32 PM
6 91
The only force really considered in classical mechanics is gravity. And yet, we often have problems involving...
T 08:54 PM
0 43
I attached a picture with 3 questions? My first question is, I know that for a convex or concave mirror, If I...
T 08:08 PM
7 121
One particular experiment that I remember from a visit to a Science Center is the one involving a revolving platform...
T 06:43 PM
24 358
For the classic Lenz law demonstration using a neo. magnet dropped down a copper pipe, is the magnetic force generated...
T 04:52 PM
Philip Wood
11 809
I guess we all know laser beams. I wonder if we can make beams in the microwave frequency range and how the beam width...
T 04:35 PM
1 60
I came across this article was incredibly interested. I've read the paper and the material was completely over my...
T 01:55 PM
1 109
Hi PhysicsForums, I was wondering if this youtube was a correct representation of a photon traveling through space...
T 12:18 PM
6 201
Hello, I am at present analyzing the electromagnetic interaction of a layer of paritcles in air when illuminated...
T 10:53 AM
0 73
Many of you are familiar with the catapult launched profile fuselage gliders that are sold in hobby stores. Since...
T 06:04 AM
16 993
A free rigid body (no forces/torques acting on it) has a constant angular momentum. And yet, I am puzzled because...
T 04:43 AM
6 254
Is there a mathematical relation for the temperature change when a fluid flows through a pipe from one end to another?...
Y 08:13 PM
121 9,622
In almost every textbook I have seen, pressure is said to be one of the most important state variables of a...
Y 06:11 PM
9 157
Hi Guys! I have a, rather general, question regarding the nature of magnet repulsion. When two opposite poled...
Y 05:29 PM
2 92
Is a standing wave actually a traveling wave appearing to be still do to interference of two different waves? If...
Y 04:56 PM
Philip Wood
14 258
According to d'Alembert's Principle, the virtual work done by constraint forces must be zero. I have a few things...
Y 04:26 PM
Greg Bernhardt
1 198
Hello everyone, I was recently creating two different types of plasma for a Science Fair, one created from ionised...
Y 10:37 AM
Simon Bridge
7 219
Hi all, I'm new to the forums (in posting at least!). I recently graduated with a B.S. in Applied Physics, and have...
Y 08:49 AM
Andy Resnick
9 238
Hello PF'ers, Why is it that two light-bulbs produce twice as much brightness as a single light-bulb would? If we...
Y 08:24 AM
4 170
I want to construct 5 sided dice in the shape of a square-based pyramid. When rolled, I want the die to have equal...
Aug25-14 09:09 PM
12 342
hi, I'm a student and i have an electromagnet and a bar magnet paced head on coaxially and i want to calculate the...
Aug25-14 07:16 PM
Meir Achuz
32 792
I cannot seem to visualize how this compression and rarefaction occurs for example when I clap my hands, I know I move...
Aug25-14 07:09 PM
4 176
Hey! I need to calculate the electric field on the axis of a circular plate of radius a with the following charge...
Aug25-14 03:24 PM
2 123
Hello, I am having trouble understanding collision frequency in following discussion from Kubo,...
Aug25-14 08:46 AM
2 106
Hello, I am a PhD student in chemistry, and need to determine the pressure of a reaction to be carried out I...
Aug24-14 11:32 PM
5 176
I am having trouble wrapping my head around the idea of a piston/cylinder type arrangement where the piston has a...
Aug24-14 05:54 PM
7 250
I know that delta h(Enthalpy) is heat and it is also the total kinetic energy of the system. Temperature is the...
Aug24-14 02:13 PM
Andrew Mason
11 394
Wikipedia claims that the Chandler wobble (a deviation of the angular velocity vector of the Earth with respect to the...
Aug24-14 12:37 PM
0 131
While deriving lagrangian equation using D'Alembert's principle, in Goldstien, they defined a variable called "virtual...
Aug24-14 10:08 AM
1 194
My question relates to entropy generation in a closed system ΔS=dQrev/T for a reversible process ΔS=dQ/T + Sgen for...
Aug24-14 09:54 AM
12 243
Just read in Taylor that in general the kinetic energy can depend on position as well as velocity. I believe him, but...
Aug24-14 09:47 AM
9 306
How magnetic field associate with mass........ from the experiment we know that this is due to electric charge........
Aug24-14 06:39 AM
3 236
We know that a steam power plant is basically a heat engine with steam as the working fluid. According to the...
Aug23-14 11:35 PM
8 1,000
when a magnetic field exert force on a moving charge the work done by it is 0.But bar magnet do work.And i read that...
Aug23-14 04:52 PM
83 2,087
I am not sure if this is the right forum for this question, but I arrived at the question while studying the principle...
Aug23-14 03:18 AM
9 273
In my theoretical mechanics class, we went over some very basic conservation laws (namely momentum) and talked about...
Aug22-14 03:37 PM
1 171
Hi all, I am preparing for my "second chance exam" in analytical mechanics. It is a graduate course i.e. based on...
Aug22-14 11:38 AM
2 226
Divergence of electric field is 0 for the field produced by a point charge at origin at points other than origin is 0;...
Aug22-14 12:43 AM
1 212
In vector form, L=Iω. I am trying to show that for a point particle, this reduces to L=rxp, but am getting an...
Aug21-14 06:05 PM
1 157
I was going through "Engineering Thermodynamics" by Cengel & Boles studying exergy analysis of a closed(non flow)...
Aug21-14 01:36 PM
3 196

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