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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 45,988
This relates to the extension of a uniform cross-section, homogenous, ideal wire which extends within the proportional...
Apr7-14 10:01 PM
6 267
I am currently working on an experiment with piezoelectricity and was wondering how I would measure the force applied...
Apr7-14 05:38 PM
3 227
Hi, I was wondering what the frequency of a photon is according to maxwell's equations. Does the...
Apr7-14 05:04 PM
24 943
Hi! I have been studying AC generators. I am confused about why there is no current when the armature is...
Apr7-14 02:07 PM
4 230
I have a quick question regarding causality in SR and some specific examples. Collision between two bodies is one of...
Apr7-14 11:03 AM
10 568
According to Faraday's Law a changing magnetic field induces an electric field, an example of this is if you have a...
Apr7-14 08:18 AM
3 209
Sorry, but this will be a long post. This isn't homework, I'm reviewing physics after many years of neglect. ...
Apr7-14 06:00 AM
8 473
Imagine I am standing but not moving forward/backward, but I am rotating my body about my own axis. Now imagine if I...
Apr7-14 12:20 AM
1 188
I am not well versed in complex physics (I've taken honors physics in High school) so any help I can get with simpler...
Apr6-14 11:08 PM
6 322
How come a spring with applied weight of 1000 g goes down 9.8 cm but the same spring with applied weight of 500g goes...
Apr6-14 08:16 PM
2 198
Consider a solenoid of length l, no. of turns N, n = N/l, area A, and negligible resistance. In its middle is placed...
Apr6-14 04:17 PM
rude man
8 381 Consider the following setup (see...
Apr6-14 01:26 PM
54 1,670
Greetings, I fell upon a certain question and it seemed that no matter what I did I was unable to solve it. I wished...
Apr6-14 10:08 AM
11 376
Given a system's Lagrangian, How can we calculate the equilibrium points corresponding to the system? also how can we...
Apr6-14 08:12 AM
1 171
Greetings, I was thinking about bouncing a tennis ball against a wall and how its momentum and kinetic energy would...
Apr6-14 02:10 AM
4 181
Hi, does somebody know a good website with many exercises about Lagrangian/Hamiltonian mechanics? And I mean problems...
Apr6-14 01:47 AM
1 199
Suppose we have two co-linear strings under tension, attached far away, and with propagation speed v. Let the strings...
Apr5-14 03:38 PM
0 233
As I understand it, The intensity and extensive thermodynamic system parameters can only be internal parameters. The...
Apr5-14 01:38 PM
6 324
I was following along in my Thermodynamic textbook and began playing with some definitions. In the following...
Apr5-14 07:24 AM
1 197
Hi I am using Simple Harmonic Motion in a Matlab/Simulink model. Instead of using a motion for a simple pendulum, I...
Apr5-14 04:09 AM
1 265
Momentum of a body can be constant while it accelerates? I mean if velocity increases while mass decreases...
Apr5-14 01:36 AM
8 360
(This is not a homework problem, but is just something I'm curious about.) If two rocks with different momentum...
Apr4-14 10:48 PM
16 363
So if I slowly pull the A string first B string will tear apart... Cause the A string will expand and it will pull the...
Apr4-14 05:31 PM
2 183
Hello, I'm trying to make my own physics engine. I've already made one with momentum and an very easy collision...
Apr4-14 01:11 PM
5 359
Hi I have calculated angular acceleration which changes with time. I also have a moment(torque) which also changes...
Apr4-14 09:36 AM
4 286
A homogene rod with length "l" is placed vertically, and a nail is stabbed on the top of the rod (now the rod has an...
Apr4-14 06:43 AM
0 223
I have just watched a MythBusters episode investigating whether a concrete glider could fly. They conclude that it was...
Apr4-14 02:29 AM
14 368
Recently, Facebook suggested solar powered drones could be used to provide internet coverage in remote areas and they...
Apr3-14 03:02 PM
5 305
EDIT : solved, thanks :)
Apr3-14 08:57 AM
1 161
Is it possible for a magnetostatic field to exhibit vector circulation when no current ( free, bound or polarization )...
Apr3-14 12:58 AM
6 319
hey pf! so i have a small question when deriving the navier-stokes equations from newton's 2nd law. specifically,...
Apr2-14 11:06 PM
6 235
Hi, I need help with the following equations. n = r/r (unit vector in r direction) v =d r/dt = dr/dt n +...
Apr2-14 07:03 AM
4 286
If you stop cooling a resistor and stop current simultaneously then what happens to the temperature of the resistor in...
Apr2-14 03:05 AM
2 230
I'm wanting to get the time it would take a vehicle to travel a 1/4 mile coming out of a corner in the ideal world. By...
Apr1-14 06:06 PM
17 517
I am trying to use thermodynamics manipulations in order to find \partialP/\partialV (at constant entropy) I tried...
Apr1-14 04:35 PM
rude man
1 229
I am doing a final year project, my Prof gave me 2 prism. He wants me to do so: A white laser is shot on a prism...
Mar31-14 10:18 AM
5 281
If I have a pair of coils connected in an anti-helmholtz configuration, with current flowing oppositely in both, and I...
Mar31-14 09:49 AM
16 346
On the 2012 AP Physics C Mechanics test, I got confused by the sign conventions for torques on question 3....
Mar30-14 11:59 PM
Simon Bridge
1 215
I was wondering where the derivation of the formula Group Velocity = Phase Velocity + K(dVp/dK)
Mar30-14 01:55 PM
1 201
What happens To the force between 2 charges if a metal sheet or a dielectric sheet is kept in between the two charges...
Mar30-14 01:52 PM
1 193

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