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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 48,212
Hi, I am new poster on this forum. Apologies if you have already answered a similar problem before. let me get to the...
Jun22-07 01:25 PM
41 4,958
hi.. once again my thoughts bumped into weird energy question, yet, very basic...... so say there is car, which...
Mar6-10 08:43 AM
41 4,591
As the title says. If we have a system which can't exchange heat with the environment that is, by definition, an...
May29-10 11:10 AM
Count Iblis
41 5,228
I have asked a few people this question and the most common answer is, "that just seems to be the way nature works." ...
May25-10 04:15 PM
41 5,446
I have a hypothetical question: Suppose a use a chemical source of energy to heat a 1Kg Iron ball, or, transform that...
Jun19-10 09:13 AM
41 3,903
I was tutoring a student in an optics lesson the other day. We discussed the foundational concept, that light travels...
May27-13 12:46 AM
41 13,695
helllo ALLLLLL my question in Ac single phase without earth only one phase live and one neutral why we say...
Jan30-13 01:08 PM
41 2,119
For example if a box is sitting on a table, not moving, it is said that the table exerts a support force on the box. ...
Mar23-13 04:00 PM
41 2,625
The Benouilli effect, used by aeroplanes, race cars and of course blowing pieces of paper. OK, In the case of an...
Oct27-03 12:25 AM
40 8,212
I don't understand why a rotating gyroscope whose rotation axis is inclined with respect to a vertical axis does not...
Oct29-09 09:11 PM
40 10,908
Hello Everyone! I am a new member in this forum.:cool: What we learn at school regarding dielectrics is: When...
Jul7-07 07:43 AM
Mr Virtual
40 4,814
That was discussed before but the thread died inconclusively. Anybody knows of necessary or sufficient conditions...
Jul16-07 02:25 PM
40 4,207
The result was surprising. Their "explanation" was nonsense. What is the reason that the boat is able to move...
Jul13-11 11:34 AM
40 23,113
My textbook says that Electrostatic potential is the work done on a unit charge to bring it from infinity to a point...
Aug9-11 10:45 AM
40 5,353
My son and I were playing in the park and accidently came across an interesting physical force. We threw a marble on...
May25-12 06:08 PM
40 5,629
The initial presentation of Newton’s Laws of Motion (NLM) to students often proceeds as follow: 1. The 3 laws are...
Feb10-12 09:35 AM
40 4,349
Hi, I'm 15 and I want to build a particle accelerator (probably in my backyard). I don't know much about physics yet,...
Oct18-12 02:10 PM
40 4,568
This is polarization density. Can somebody...
Mar6-13 05:31 PM
40 2,352
Hello! I've read thousand of explanations about how q and q-dot are considered independent in the Lagrangian treatment...
Sep5-13 06:55 AM
40 3,624
If you apply 100 volts to a 10:1 transformer you will end up with 10 volts out. If you put a 10 ohm resistor on the...
Aug2-14 05:30 AM
Philip Wood
40 2,146
I'm trying to understand why a superdeformed nucleus may be represented as bulging perpendicular to the axis of...
Mar27-14 11:05 PM
40 1,456
Are the questions a) why does an accelerating charge radiate and b) why does an uniformly accelarating...
Apr18-10 09:16 PM
39 11,380
Another intersting point on home electronics raised was - why does every device you purchase have it's own...
May13-05 03:40 PM
39 3,430
if one recalls the old classical physics terms namely repose angle, i've got a problem for them. as it(repose angle)...
Aug24-05 10:49 PM
39 2,643
I was watching "Casino Royale" with my friends yesterday, and there was a part where a commercial plane was about to...
May26-11 12:13 AM
39 7,986
can static friction do work?
Dec10-07 02:12 PM
39 5,069
Hello, im new to the these forums. I recently read the article in the Wikipedia about this force (Abraham-Lorentz)...
Mar9-09 06:44 PM
39 4,424
let me first donate a(A,B) is the acceleration of A relative to B Observer 2 and a subject A with mass m are falling...
Nov19-11 12:46 AM
39 4,351
I have a very simple conceptual physics problem that I am looking to solve, and unfortunately I've been out of school...
Jun7-09 09:24 PM
Bob S
39 37,071
The wikipedia article I quote below is confusing me. I followed the links to Frank Lambert's website, where he claims...
Jul1-13 02:26 PM
39 7,891
Suppose you have a dissipative system where \dot{q}=p/m \dot{p}=-\gamma p -k\sin(q) So there isn't a...
Mar9-11 05:19 AM
39 3,376
A friend of mine says they can tell which 2 notes are being played together on a piano keyboard. How can this be if...
Jun27-11 12:06 AM
39 4,456
In Landau's Mechanics it states "If all co-ordinates and velocities are simultaneously specified, it is know from...
Jun15-13 06:45 AM
39 2,228
This post specifically queries the absorption, by matter, of (thermal) radiation which has been emitted from a source...
Jan26-14 01:19 PM
Arfur Bryant
39 1,100
According to source i read, in classical theory it its believed that charged particles radiate when the accelarate -...
Oct7-09 09:27 PM
38 7,414
Basically, what I mean to say is that lets say I am playing ping pong...I put a lot of sidespin on the ball.(from back...
Oct24-10 10:32 PM
Roy Dale
38 7,983
I decided to try and learn what entropy is today and I swear to god I've been sitting here for 4 hours and I still...
Nov28-10 08:18 PM
38 61,832
Electricity (the flow of current) is said to travel at near the speed of light (75-90%), but I read that electrons...
Oct2-09 12:54 PM
38 13,215
Hi friends Let me talk in context of cars wheels..... See!, tractive force is what ground offers us depending upon...
Nov7-09 01:29 AM
R Power
38 12,881
How does one find the electrical resistance of a homogenous sphere of uniform density? By connecting two wires...
Feb26-13 02:19 AM
38 4,966

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