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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
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Dear forum, while standing, spreading your legs helps your stability because you have a wider base. but doesn't...
Nov26-13 03:01 PM
3 549
Dear members, My name is Gilberto F. A. and I would like to ask your help regarding a topic in Gravitation. I have...
Nov26-13 12:46 PM
2 630
Is it possible to make a voltage divider split a DC power input between a resistor and capacitor? If so, does anyone...
Nov26-13 11:36 AM
1 354
Dear all, I'd like to specify meaning othe relaxation phenomenon on example in some classical system. For example...
Nov26-13 06:59 AM
1 429
I am really confused about relative velocity when one frame is rotating. Is it possible to have...
Nov25-13 07:34 PM
1 511
Hi, I just submitted some homework that had a question that I'd really like to know the answer to now (rather than...
Nov25-13 03:18 PM
Charlie G
0 456
Hi I googled why different charges attrack each other and I found severel answer but I guess this answers are not...
Nov25-13 10:56 AM
15 754
Dear all, I am trying to calculate the inductance increase of a small ferrite rod placed in the middle of a...
Nov25-13 09:27 AM
0 332
Hey everyone. My question is the following: if we had the trajectory of a particle eventually reaching a point of a...
Nov25-13 08:28 AM
0 302
Every source I have referred to says red light is faster in water than blue light. However, nearly all...
Nov25-13 12:01 AM
7 2,974
Hello, I am wondering if the resistivity of a metal will increase or decrease beyond melting relative to the solid...
Nov24-13 05:51 PM
0 491
Though standard gravity is 9.80665 m/s2, it must vary from city to city, since the Earth is neither a perfect sphere...
Nov24-13 05:14 PM
Vanadium 50
12 595
For a rotating body, (angular acceleration x radius)= Acceleration of center of mass ? But a rotating body can...
Nov24-13 09:33 AM
6 638
Hi, I want to write a very simple code to plot the beam emittance knowing x,y,z and vx,vy,vz of each particle. I...
Nov24-13 09:28 AM
6 585
I was having a few problems with Negative gravitational potential energy, I wasn't able to put my finger on why...
Nov24-13 05:02 AM
4 549
I don't understand this concept very well. Is it like taking the energy each possible configuration and adding them...
Nov24-13 12:43 AM
6 479
Hi, please could someone guide me to a correct definition of voltage. I have looked through previous posts and there...
Nov23-13 08:52 PM
5 691
Hi, I have been told that you take say a metal board and another board (both endless and paralell) leads to the...
Nov23-13 08:50 PM
3 407
Was reading my old copy of Surely You're Joking Mr. Feynman again; ran into the anecdote about the Feynman sprinkler....
Nov23-13 02:28 PM
8 745
Hello, A was just helping my younger brother review some mechanics when I tried to explain how friction will cause...
Nov23-13 12:39 PM
6 529
Hey everyone, hope this is the right place to ask this question so I'll just put it out here. I've been measuring...
Nov23-13 11:31 AM
rude man
1 474
Two new uninflated balloons do not attract or repel each other. But after blowing them up, they repel each other and...
Nov23-13 11:30 AM
5 568
If I wanted to set up some initial conditions for a 3 body figure eight orbit, what would I have to set the position...
Nov23-13 10:04 AM
1 601
The term ground has always confused me. For instance: I have always thought of a battery as a collection of negative...
Nov23-13 02:15 AM
2 463
I'm hoping this is a really simple question, but I can't seem to find a definitive answer anywhere! If the action...
Nov22-13 01:27 PM
0 422
Hi, I'm sorry if this is the wrong section. My Dad keeps telling me that light takes the path of most time elapsed...
Nov22-13 11:42 AM
Vanadium 50
8 494
Suppose I'm holding a magnet and then lift a paperclip(or another magnet) with the magnet. Now the energy density of a...
Nov21-13 10:51 PM
11 726
I trying to come up with a way to measure the power output of an engine using a water pump, And I wanted some one to...
Nov21-13 06:16 PM
6 714
I've come across a few places that mention that dipoles and charged particles accelerate in non-uniform magnetic...
Nov21-13 03:45 PM
6 593
I have three elements, A, B, C, that under certain conditions (rapid heating and cooling) form one ABC phase solid....
Nov21-13 05:27 AM
1 393
Hello, Imagine I have an infinite wire with a DC current. Around it there two rings of ferro-magnetic material, not...
Nov20-13 08:20 PM
Jano L.
8 661
Hi. I am studying physics on my own from scratch, so far so good, though I've run into this concept I am struggling...
Nov20-13 06:28 PM
6 954
Does a yo-yo lose all its translational kinetic energy when it reaches the bottom and turns around? It seems at the...
Nov20-13 05:11 PM
13 838
This is the type of diagram I'm talking about: ...
Nov20-13 05:03 PM
1 474
I've been trying to understand the Coriolis effect on the Earth's surface. The general equations produce two terms: ...
Nov20-13 10:06 AM
1 431
I determined the equilibrium point of a spring by setting the potential energy function U(r) equal to zero and solving...
Nov19-13 05:14 PM
5 582
Hey! Where is the error in my reasoning?: The acceleration of the centre of mass in a swinging physical pendulum...
Nov19-13 09:31 AM
4 602
I have trouble understanding how to draw phase portraits. Is there a good pedagogical overview of their basics (such...
Nov18-13 07:34 PM
Simon Bridge
1 363
First, this is not a post about perpetual motion machines, although thinking about perpetual motion machines made me...
Nov18-13 07:26 PM
1 591
I want to build a fun, but potentially dangerous toy - a human slingshot (into a lake). I'm trying to figure out the...
Nov18-13 07:21 PM
1 641

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