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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,652 
I am wondering if it is possible to shield strong (1 Tesla) DC magnetic fields with high attenuation factor (10^4 or...

Jul1514 11:00 AM
rigetFrog

2 
1,115 
Dear all,
I solved the NavierStokes equations in Eulerian description. I would like to illustrate it as follows:...

Jul1514 10:55 AM
Zoli

3 
822 
Imagine to have a drop of water(semisphere volume) on a flat membrane covered by a polymer so that the liquid can't...

Jul1514 10:28 AM
rinale84

0 
829 
Why does the potential drops when charge pass through a capacitors connected in series.

Jul1514 09:49 AM
DeltaČ

11 
1,027 
Hello.
I think that you know an experiment called Cartesian diver.
I can use some heads of matches like Castesian...

Jul1514 08:05 AM
Oomph!

0 
768 
Let \lambda be a linear density of a rope which is moving into a scale at velocity v. The additional force on the...

Jul1514 02:57 AM
MisterX

2 
964 
I just wanted to clear one thing... in metals what type of potential the electrons are subjected to..??
Is it...

Jul1414 10:51 PM
rigetFrog

2 
1,320 
Why do the capacitance increase with increase in dielectric constant(K) of the medium between the capacitor?

Jul1414 10:38 PM
rigetFrog

2 
1,249 
(Headsup: these might be QM questions)
Two questions:
1.) What is it that gives rise to the fact that...

Jul1414 09:16 PM
UltrafastPED

5 
1,038 
Consider the following problem: A spring with spring constant ##k## is suspended vertically from a fixed support and...

Jul1414 07:42 PM
Matterwave

5 
1,028 
I was wondering if someone could show me the derivation of Faraday's Law of induction from the more fundamental...

Jul1414 07:11 PM
TumblingDice

3 
918 
I learned that momentum conservation is vectorial, and now, when i read about perfect elastic collisions, I can't...

Jul1414 10:52 AM
olivermsun

1 
880 
I can do circuit problems, but conceptually I cannot figure out what is going on from a basic physics perspective,...

Jul1414 10:31 AM
DeltaČ

9 
1,214 
Please find the attachment and comment about equation (2).

Jul1414 08:58 AM
DaleSpam

75 
6,989 
I can see the purpose of J for currents taking place in a volume like, say.. plasma physics
but for current in a...

Jul1414 06:06 AM
UltrafastPED

1 
794 
I have seen in a number of thermodynamics lectures that the entropy change of a system as it falls approximately...

Jul1414 02:39 AM
nayanm

16 
1,520 
Hi all,
Can someone clarify whether the following is right?
Assume a Cylindrical tank with a base area of 2000...

Jul1314 11:24 PM
user100

5 
1,070 
For twice differentiable path x:\to\mathbb{R}^N the action is defined as
S(x) = \int\limits_{t_A}^{t_B}...

Jul1314 08:35 PM
UltrafastPED

2 
773 
Figured it out thanks, next post:

Jul1314 08:02 PM
TSC

2 
881 
Hey guys I'm looking for. Some more info on eddies current. I understand how it works but all the examples I see use...

Jul1314 11:06 AM
Ziggey

2 
730 
I want to calculate the field distortion caused by placing a conducting spheroid in a uniform electric field. The...

Jul1314 04:42 AM
Shyan

2 
716 
I am working with a single mode fiber at 830 nm with a NA of 0.12...

Jul1314 12:10 AM
rigetFrog

1 
900 
How is electromagnetism different from gravity in that accelerated objects radiate EM waves when accelerated in an...

Jul1214 05:39 PM
WannabeNewton

8 
1,099 
this is a homework problem i realized after posting it. so could a moderator please move this question to the hw...

Jul1214 04:54 PM
UltrafastPED

1 
680 
This is related to classical Hamiltonian mechanics. There is something wrong
in the following argument but I cannot...

Jul1214 05:46 AM
Matterwave

1 
795 
What are your opinions about these two experiments described at: http://adsind.wordpress.com? Can they be used to...

Jul1114 01:45 PM
micromass

5 
816 
I am trying to understand why I can specify the specific volume v of a fluid element as a function of the equilibrium...

Jul1114 12:34 PM
WannabeNewton

3 
832 
This is a problem I thought up. If I'm correct as far as I've gone, the answer is rather surprising.
A thin but...

Jul1114 12:26 PM
MrAnchovy

16 
1,751 
I understand that when an electron is excited it goes to a higher energy level and then relaxes to ground state...

Jul1114 11:57 AM
Bandersnatch

1 
639 
Hello,
Been a while since I posted on here, nice to be back :) .
I just want some pointers as to the methodology...

Jul1114 08:45 AM
Mech King

3 
938 
I have come to learn that the Doppler shift equation is asymmetric. That is, the Doppler shift is not the same when...

Jul1114 07:47 AM
user3

7 
771 
We know that the main use of capacitor is to store charge in the form of electric field,and we want it to store as...

Jul1114 01:44 AM
phoenixXL

1 
664 
I feel I understand what happens, and how to solve the equation of motion x(t) for a mass attached to a spring and...

Jul1014 06:19 PM
Edge Of Pain

7 
928 
The power density of an electromagnetic wave is proportional to the absolute square of the electric field E^2...

Jul914 09:05 PM
Andy Resnick

2 
1,579 
Please help me qualitatively in the following points :
1) If in a system(consider a cylinder) fixed with a piston ,...

Jul914 11:14 AM
Philip Wood

2 
902 
hai friends,
i would like to know what would happen to three isolated point separated by infinite...

Jul914 09:39 AM
jbriggs444

1 
863 
Hi,
I have a question I'd like some help with which is related to my job working with drill rigs.
Where you have...

Jul914 07:43 AM
256bits

6 
1,116 
Why do we take Θ=90° for calculation of potential energy

Jul914 06:11 AM
physicsjn

1 
896 
Hello!
It has been years since I had physics at uni, and I have forgotten lots of it, so I need some help here. The...

Jul814 01:20 PM
homeowner

0 
797 
I know that in the vector potential formulation one can use a scalar Green function (to find the said potential and...

Jul814 12:50 PM
Apollo2010

3 
1,279 