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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
ZapperZ
1 47,902
F=ma How do we define m and F? If their definition both come from this equation, then the equation doesn't really...
Oct19-09 12:29 AM
Martin
31 10,475
HI guys. im facing a problem that is quite interesting but quite complicated to explain. so would like to ask some...
Jun20-08 02:29 PM
rcgldr
6 10,472
I am reading an electrodynamics book to grasp the concept of bound and free charge, esp in conductor and dielectric. I...
Nov21-08 10:46 PM
FourierX
5 10,471
1. Is it possible to increase voltage without increasing wattage? 2. If 1. is yes, then is it more common that when...
Jan26-05 07:06 AM
Nylex
6 10,465
I seems very simple, and I'm sure I understood it before, but for some reason I suddenly started to get confused with...
Sep22-08 04:07 PM
atyy
53 10,453
Difficult to put the topics on the right place... Is there any spring (or any physical method) that could have...
Oct2-03 03:53 PM
rdt2
3 10,433
Are there any applications for the lissajous figures? I haven't seen any applications for them besides the ABC logo so...
Sep21-07 11:17 PM
Gokul43201
4 10,410
work done in an reversible process is easy to find we have the function of P internal bt when it comes to irreversible...
Nov1-08 06:52 PM
Count Iblis
3 10,409
Hi all, Will like to check if my below thoughts are right: 1) For a totally reversible process, it has to be...
Feb26-10 02:05 AM
noobie_doobie
2 10,382
I'm a little confused about the analysis of TM and TE modes. As per definition, TE modes have only H (magnetic...
Apr23-12 08:53 PM
Bob S
15 10,380
I understand that using F = qv x B and the fact that positive currents generate counter clockwise magnetic fields, it...
Dec12-10 02:21 PM
compter
7 10,377
what makes the particles move from a high concentration to a lower concentration?
May30-04 03:58 PM
turin
7 10,373
This question came some time back in Stony Brooks exam. I have the solution also. But i am having some conceptual...
Mar31-08 03:02 PM
zarbanx
2 10,358
Why is the SI unit for acceleration \frac{m}{s^2}(meters per second squared) when it is actually \frac{m}{\frac{s}{s}}...
May15-08 08:30 PM
ffleming7
3 10,357
Hi all, I was asked today by a friend a simple question but couldn't answer so I'm asking you. Let's assume we...
Jul15-09 06:04 AM
leviadam
4 10,312
I've looked this up extensively on the web but nothing seems to answer this question satisfactorily. For example,...
Apr22-07 07:44 AM
lpfr
10 10,301
In the movie Speed a speeding bus is shown jumping a long gap in the elevated freeway. The Mythbusters test the...
Dec17-09 11:32 PM
diazona
56 10,301
I have been trying to find the explaination why the wavelength of a wave is the limit of the resolution of an image...
Dec13-07 05:42 PM
Claude Bile
1 10,295
Hey all... I'm trying to write a technical report and one part involves calculating the rate of flow of water...
Mar1-07 09:58 PM
preet
2 10,293
In grade school I remember the physics experiment of the cup of water turned upside down on a card, and kept the water...
Aug29-05 05:06 PM
lightgrav
9 10,290
Hello. I know that entropy equals the Boltzmann's constant times the natural log of the multiplicity but I do not...
May19-09 02:30 AM
vipul_rop88
4 10,285
pi = 3.14159... angular frequency = 2(pi)f theta = 2(pi)f t t = theta / 2(pi)f For theta = 0, t = 0 For...
Oct20-04 07:47 PM
Pyrrhus
7 10,277
Hi, I didn't post this question in the Homework section as it is not home work and does not seem to fit with the...
Feb20-09 10:04 PM
mcvwi623
5 10,265
Hi, I've seen a very very small drop of mercury in a little corner of a laboratory table and it likely dates from a...
Mar28-09 03:15 PM
lalbatros
5 10,261
On an automotive forum, a member made a statement that compressed air won't hold as much moisture as ambient pressure...
Feb6-04 11:31 PM
desertwinds
4 10,259
A ball being thrown, ignoring drag or wind, has an initial height, initial velocity, and experiences the acceleration...
Jan13-12 09:42 AM
nelleyao
19 10,242
Hi, Does anyone know an equation/approximation/model or other to estimate the capacitance between two coplanar...
Jun22-10 05:53 PM
marcusl
7 10,230
Why a cellphone rings inside microwave oven? Does the microwave oven don't block cellphone radiation?
Apr30-08 12:01 PM
mgb_phys
2 10,207
If water and vegetable oil are added to a bowl, they do not mix. If gasoline and vegetable oil are added in another...
Dec27-06 08:39 PM
Gokul43201
32 10,201
I was just wondering how these amazing engineering feats support the loads on their wings? Specifically the larger...
Jun24-08 01:37 AM
russ_watters
9 10,194
A 5 kg block and block X are attached to a rope which passes over a pulley. A 30 N force is applied horizontally to...
Oct19-03 11:49 PM
sirfederation
1 10,191
Everyone here should be familiar with the office toy known as Newton's Cradle where a ball collides with a group of...
Jan13-10 10:11 PM
Prologue
8 10,178
Hi, Was doing some testing for work, but a lot of my physics are gone! Hope someone can help... Here goes: A...
Sep23-09 12:46 AM
rustyphysics
12 10,152
Recently I was going through the derivation of wave equation I want to discuss it to get my concepts fully clear by...
Dec1-10 02:58 PM
emailanmol
10 10,140
If a top is spinning in the horizontal x,y planes in a counter-clockwise motion, the vector of its angular velocity...
Jan5-04 08:00 AM
Njorl
6 10,121
Is there a mathematical relation for the temperature change when a fluid flows through a pipe from one end to another?...
T 11:57 AM
Chestermiller
143 10,114
Energy can be neither created nor destroyed. What is energy?. ability to do work. what is work ? work = force x...
Jul11-07 08:45 AM
Doc Al
88 10,098
Is the kinetic energy of a (not necessarily homogeneous) rigid body in translational motion and rotating about its CM...
Nov12-06 01:00 AM
jtbell
10 10,076
I am new here and have always loved the history of science as much as the science itself. I have been intrigued by...
May6-10 09:11 AM
James A. Putnam
113 10,071
In space if a space craft in the absence of a gravitational field stopped using whatever propulsion system it was...
Jun19-10 11:51 AM
DaveC426913
10 10,070

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