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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
46,102 
Why do the capacitance increase with increase in dielectric constant(K) of the medium between the capacitor?

Jul1414 10:38 PM
rigetFrog

2 
969 
(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 
784 
Consider the following problem: A spring with spring constant ##k## is suspended vertically from a fixed support and...

Jul1414 07:42 PM
Matterwave

5 
794 
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 
668 
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 
675 
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 
993 
Please find the attachment and comment about equation (2).

Jul1414 08:58 AM
DaleSpam

75 
5,042 
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 
600 
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 
1,287 
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 
806 
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 
580 
Figured it out thanks, next post:

Jul1314 08:02 PM
TSC

2 
695 
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 
604 
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 
575 
I am working with a single mode fiber at 830 nm with a NA of 0.12...

Jul1314 12:10 AM
rigetFrog

1 
709 
How is electromagnetism different from gravity in that accelerated objects radiate EM waves when accelerated in an...

Jul1214 05:39 PM
WannabeNewton

8 
978 
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 
571 
This is related to classical Hamiltonian mechanics. There is something wrong
in the following argument but I cannot...

Jul1214 05:46 AM
Matterwave

1 
644 
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 
663 
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 
692 
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 
1,482 
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 
522 
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 
772 
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 
656 
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 
558 
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 
787 
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 
1,258 
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 
764 
hai friends,
i would like to know what would happen to three isolated point separated by infinite...

Jul914 09:39 AM
jbriggs444

1 
723 
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 
917 
Why do we take Θ=90° for calculation of potential energy

Jul914 06:11 AM
physicsjn

1 
739 
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 
680 
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 
1,059 
Hi guys,
I hope this is the correct section otherwise I apologize :).The goal is to find the capacity of a non linear...

Jul814 10:15 AM
rinale84

6 
699 
I'm looking to find the resultant force of three forces and a moment: Fx, Fy, Fz, and Mx. I intend to graph multiple...

Jul814 06:07 AM
Smijo

2 
811 
Hi all,
I am looking into induced electric fields by changing B fields inside layers of dielectric. For example, if...

Jul814 05:13 AM
vanhees71

10 
1,075 
I tried to make the title as descriptive as I could without being overly long.
Anyway, I've been trying to work...

Jul714 11:12 PM
elegysix

6 
1,858 
Hello.
I have a question about experiment. You know it. You need beer bottle, water and ping pong ball.
You...

Jul714 10:56 PM
elegysix

1 
653 
Are these two, wave number and wave mode, same thing?
If not, what is the difference?
Thanks...

Jul714 09:00 PM
Simon Bridge

10 
1,215 
Hi
I'm trying to model the drag effects in using Lagrange Mechanics and trying to include the effects of...

Jul714 04:45 PM
rigetFrog

1 
1,042 