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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
ZapperZ
1 41,685
I'm a bit confused with this topic we're supposed to be writing a paper on: "Thermodynamical Irreversibility VS...
Nov22-03 02:36 PM
krab
1 2,564
what kind of sources of light generate sinusodially varying electric field that is solutions of the form ...
Nov1-07 06:50 PM
Claude Bile
7 2,564
Trek recently released a belt driven bicycle (instead of chain drive) which led to a discussion among some cycling...
Nov20-08 08:45 PM
rcgldr
1 2,564
I understand that chromatic aberrations occur because the different wavelengths of light are separated, but I don't...
Apr23-09 07:50 AM
Andy Resnick
15 2,564
Am I correct in saying that when a torque is applied to a wheel the force is resisted by the friction at the contact...
Jul24-10 08:18 AM
AJ Bentley
1 2,564
I hope this comes under the classic physics roof. Do any of you play the game and would like to offer your opinions...
Feb15-04 08:37 PM
russ_watters
3 2,563
Hi, I'm not sure this falls under the homework category, but I posted this here because I think this is more of an...
Aug22-09 11:14 AM
jfierro
5 2,563
recenty i read the rocket equation, derivation of, however i think i have a slight confusion with signs suppost...
Nov27-10 01:02 AM
yathiraj
8 2,562
I have recently found a circuit schematic that can pick up radio signals without the need of a battery. Is this an...
May30-11 07:14 AM
mavc
15 2,562
Heinrich Lenz postulated in 1834 the following law; "An induced current is always in such a direction as to...
Nov19-09 11:12 PM
Born2bwire
5 2,561
Consider a rotating disk on a uniform magnetic field. Faraday's law states that \epsilon = - \frac{d\phi}{dt} ...
Apr26-10 04:46 PM
elect_eng
1 2,561
Given that heat capacity is a ratio of change of energy over change of temperature, while entropy is a change of...
Jun24-12 07:02 AM
Studiot
30 2,561
I recently noticed that when a cup of tea was stirred, the floating leaves collect at center of cup rather than outer...
Oct15-11 01:12 AM
A.T.
22 2,560
hi i am looking for an equation that gives me the potential energy of 2 quadrupole moments and their mutual...
Jun17-11 12:10 AM
liuxunchen
4 2,559
Ok guys everyone knows teh solid Pressure = P / S but i have a question.. I though about an object that falls from...
Apr4-05 07:10 PM
Andrew Mason
4 2,558
Hellow, I came upon this problem when working out the power developed in the cylinder of a double-acting steal engine....
Jun16-08 04:15 AM
afternoonslow
0 2,558
F=μmg. How was μ calculated? Obviously experiments were needed. So, done the experiments, what's the exact...
Mar16-11 09:47 PM
RandomMystery
37 2,558
Before I get yelled at for cross-posting, it was advised that I post this query here, as opposed to the celestial...
Oct3-04 05:56 PM
pervect
9 2,557
Your standard first-post-pleading-for-help here :) This doesn't make sense: Say you've got a setup like in...
Sep19-04 07:05 PM
Reisen
2 2,556
Hello, I have read over many textbooks and websites (including posts on this forum) relating to the concept of tension...
Mar12-07 07:04 PM
p3t3r1
10 2,556
I bumped into this physicis problem about 2 weeks ago and it is much harder than you might think: A ball is dropped...
Jan19-06 02:07 PM
Galileo
1 2,555
Assume there is a boat of length 4 m weighing 40 kg. One man of weight 50 kg is at one end (A) and the other of weight...
Jul29-11 12:34 PM
Dickfore
31 2,555
Suppose we have box with a volume V which is divided down its middle. So the box is split in two sides with equal...
Dec6-07 03:08 AM
LTP
8 2,553
Hi, When exactly does the phase change of \pi occur when a EM wave reflects from a surface? I notice that it...
Oct3-08 01:05 PM
Doc Al
1 2,553
Can someone explain this please. From what I understand momentum is often the more fundamental as it is spatially...
Feb4-12 12:18 PM
ardie
12 2,553
I wanted to ask which would provide the largest total BTU cooling regular ice from water or dry ice to reach a...
Mar26-09 04:14 PM
mgb_phys
1 2,552
Hello I am a graduate student and it is my first year in physics. Our instructor showed vector product with Levi...
Oct31-10 05:54 PM
vishal007win
1 2,552
I work at an office where we have this 350 pound tape ball that is nearly 10 years of high adhesive masking tape...
Sep22-04 05:11 PM
Cyrus
1 2,550
Hello everyone I came across a few (relatively standard) problem in elementary classical mechanics... A mass A...
Jan20-05 05:03 AM
maverick280857
3 2,550
I have a small steel cylinder centered inside a larger steel cylinder. The remaining space is filled with 60% silica...
Jun24-10 06:22 PM
Bacat
0 2,550
Hi, I remember reading that no work is done on an object in a circular orbit experiencing a centripetal force. ...
Feb22-11 02:51 PM
rcgldr
9 2,549
I'm probably going to make a fool of myself for asking this, but that's what the anonymity of the internet is for...
Jun20-12 07:06 AM
mischeya
4 2,549
Sorry for that title, but what can I say, i'm gonna be mad to get the motion equation for some systems but always...
Mar29-05 04:17 PM
Integral
21 2,548
Hey all, I'm trying to do some math related to air pressure and temperature and i keep getting unreasonable answers. ...
Oct24-07 12:09 AM
npau8648
2 2,548
I just thought of something, imagine this scenario: You have an empty bottle of sode\water(whatever) and you hold...
Feb9-07 03:52 PM
disregardthat
11 2,547
I was thinking the other day about how conservation of momentum works in terms of a closed system consisting of a...
May13-09 08:08 PM
worldrimroamr
7 2,546
I am having trouble understanding this. For example, say I have this: I know the...
Aug26-10 09:07 AM
nasu
1 2,546
I've thinked an experiment. We have two containers that contain two liquids. One container contains a liquid that...
May10-09 05:10 AM
Sundara1977
4 2,545
I wasn't sure which forum this came under, so... I've read the basic idea of polarised lenses: light rays have an...
Jul26-10 10:11 PM
dydxforsn
4 2,545
Hi, I am going through Non Equilibrium Statistical Mechanics by Zwanzig and I can't follow, the step below: I have...
Oct5-10 06:49 AM
DrDu
1 2,545

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