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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,757 
While I understand the use of the Lagrangian in Hamilton's principle, I have the gut feeling that there is more to it...

Sep2904 10:12 AM
alexepascual

43 
9,363 
We are all familiar with the description of a wave as being the ripples on a pond with water being the displacement...

Jun2712 10:51 AM
harrylin

77 
9,349 
is it, cause velocity isn't.

Jan1511 04:12 PM
Mueiz

60 
9,345 
I've found this video on the web:
http://www.youtube.com/watch?v=TIhPayFBE9c&feature=related
and id like to be able...

Sep1209 05:31 AM
Born2bwire

11 
9,337 
Hey can neone tell me why this is so? I have not got the ans in any book i read...
Thnx 4 replying

Jun1708 09:37 AM
Count Iblis

8 
9,317 
I was wondering if there was anyway for me to calculate pressure, velocity, momentum and more on a bottle rocket made...

Oct906 01:56 PM
marcusl

2 
9,274 
We did an experiment of measuring AC mains frequency using sonometer. In the experiment an electromagnet was vibrating...

Jun2610 11:46 AM
graphene

1 
9,271 
I'm having trouble understand this proof of Carnot's theorem, and I would appreciate it if someone could point out...

May1513 10:10 AM
Swarnali Hait

4 
9,260 
Hello all.
I am doing some research on the space shuttle for a class project, and I am having some problems with my...

Jul1604 11:47 AM
JonasS

9 
9,240 
I am having trouble going about proving the Lorentz invariance and nonGalilean invariance of Maxwell's equations. ...

Nov2707 03:13 AM
Mentz114

4 
9,233 
I was just wondering if anyone has any idea on how I would go about working this out. I have performed the experiments...

Sep2808 09:35 AM
Redbelly98

5 
9,231 
If a cantilever beam is subject to forced vibration (from a shaker at fixed end), what will the effect be of placing a...

Mar305 09:24 AM
Doc Al

1 
9,229 
Evryone knows that the work done by a magnetic field is zero. Then how does a permanent magnet lift iron filings.

Aug604 10:13 AM
rayjohn01

31 
9,200 
Hi All,
I'm doing a study on effects of outside temperature on the energy efficiency of airconditioning systems in...

Feb2610 07:33 PM
russ_watters

5 
9,197 
I am looking for a formula to determine what speed an object will fall with a known height and weight. For example a...

Jun2208 03:52 AM
stewartcs

5 
9,187 
Okay, and odd title, but let me continue.
I recently read a 15+ page argument on another board about what would...

Feb2610 05:51 AM
Lsos

23 
9,181 
I understand that using F = qv x B and the fact that positive currents generate counter clockwise magnetic fields, it...

Dec1210 02:21 PM
compter

7 
9,171 
This is a simple enough question, but no one has been able to give me a satisfying explanation. Most people compare...

Oct1212 05:51 AM
CWatters

25 
9,168 
Hey everyone,
I'm a bit confused with the meanings of f, g, and fg subscripts in the thermo steam tables (e.g. hf,...

Apr1711 01:25 PM
AriAstronomer

2 
9,127 
Dear forum users
Firstly, I wanted to post in the General Physics area, but it wouldn't let me create a new thread...

Apr1209 05:45 PM
Fullperson

3 
9,119 
Is heat always the factor that determines the colour of a flame?
Is there a way of approximating the variations in...

Aug2004 05:01 PM
vsage

10 
9,103 
So here's a pretty straightforward question. Given a cylinder with some specific mass and radius rolling down an...

Feb2307 10:59 AM
arunma

5 
9,097 
Trying to verify the general integral solution to Poisson's equation I reach the following contradiction, what am I...

Nov3007 05:23 AM
jmb

10 
9,092 
Do photons in the form of visible light actually pass through ordinary window glass?
I ask because window glass is...

Jun2105 05:27 PM
Swampeast Mike

14 
9,078 
As water is pulled into an opening by gravity, it begins to spin. Why does it spin?

Apr2108 01:34 AM
kamerling

34 
9,065 
Recently I was going through the derivation of wave equation
I want to discuss it to get my concepts fully clear by...

Dec110 02:58 PM
emailanmol

10 
9,053 
Okay, im new so if what im talking about makes no sense, be easy...i dont really know if it belongs in classical...

Mar2609 11:20 PM
Eidnar1

22 
9,035 
Does any one know the proof for newton's law of gravity, because i looked in a lot of books for this proof but i...

Jun1505 05:32 AM
Juan R.

18 
9,022 
Dear all,
i am a bit confused with a very simple equation connecting refractive index of water and its dielectric...

Nov1209 03:16 AM
SHeck

4 
8,995 
I know it's old already.. but this came up when I was lecturing my mom on the evil effects of urban myths and stuff.....

Feb808 03:04 PM
mgb_phys

11 
8,986 
I was wondering how quickly a permanent magnet would loose its magnetism if it was constantly being used to do work,...

Mar809 07:20 PM
russ_watters

24 
8,984 
Hai,
I have the following situation: I have a closed container with a certain gas at a certain...

Feb905 05:14 AM
Clausius2

9 
8,981 
can the net force on an object be zero yet the velocity not be zero?
I say yes but under what conditions and must any...

Jun405 06:12 PM
paulom2001

12 
8,970 
correct me if wrong
an accelerometer consists of a mass(proof mass). say the proof mass is
x kg. The accelerometer...

Aug2306 08:51 AM
WhyIsItSo

2 
8,956 
Anyone ever gotten the physical interpretation of S (if it has a reasonable one?) ? ... I'm remembering something like...

Nov804 01:58 PM
PerennialII

0 
8,931 
I was just wondering how these amazing engineering feats support the loads on their wings? Specifically the larger...

Jun2408 01:37 AM
russ_watters

9 
8,918 
«(...) a torque τ applied perpendicular to the axis of rotation, and therefore perpendicular to L, results in a motion...

Mar106 03:32 PM
panathi

8 
8,916 
is proton volt = electron volt? if yes then why? even if proton is 1840 times massive then electron and eV Is work...

Apr704 05:41 PM
chroot

3 
8,915 
Why does the charge on a conductor accumulate at sharp points? I've read one or two explanations, but I don't follow...

May1808 11:33 PM
Shooting Star

10 
8,913 
What are the equation(s) for circular waves such as pebble dropped in a pond.

Oct1705 04:38 PM
ZapperZ

8 
8,912 