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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,822 
Just read in Taylor that in general the kinetic energy can depend on position as well as velocity. I believe him, but...

Aug2414 09:47 AM
USeptim

9 
316 
How magnetic field associate with mass........
from the experiment we know that this is due to electric charge........

Aug2414 06:39 AM
ChrisVer

3 
247 
We know that a steam power plant is basically a heat engine with steam as the working fluid.
According to the...

Aug2314 11:35 PM
Soumalya

8 
1,011 
when a magnetic field exert force on a moving charge the work done by it is 0.But bar magnet do work.And i read that...

Aug2314 04:52 PM
DaleSpam

83 
2,105 
I am not sure if this is the right forum for this question, but I arrived at the question while studying the principle...

Aug2314 03:18 AM
A.T.

9 
278 
In my theoretical mechanics class, we went over some very basic conservation laws (namely momentum) and talked about...

Aug2214 03:37 PM
Orodruin

1 
177 
Hi all,
I am preparing for my "second chance exam" in analytical mechanics.
It is a graduate course i.e. based on...

Aug2214 11:38 AM
samalkhaiat

2 
231 
Divergence of electric field is 0 for the field produced by a point charge at origin at points other than origin is 0;...

Aug2214 12:43 AM
Delta²

1 
216 
In vector form,
L=Iω.
I am trying to show that for a point particle, this reduces to L=rxp, but am getting an...

Aug2114 06:05 PM
jtbell

1 
159 
I was going through "Engineering Thermodynamics" by Cengel & Boles studying exergy analysis of a closed(non flow)...

Aug2114 01:36 PM
Soumalya

3 
196 
For a uniform, hollow cylinder, why is this derivation wrong?
M = mass of whole solid cylinder
m = mass of missing...

Aug2114 12:42 PM
BrainSalad

3 
192 
I'm given an expression for the pressure of air with height z, as
P(z)=P(0)e^{(mgz/k_bT)}
Where m is the...

Aug2114 11:09 AM
Greg Bernhardt

1 
234 
Hello Forum,
Resolution is an angular distance (measured in fractions of an 1 degree angle). The lower the...

Aug2114 09:52 AM
fog37

3 
202 
I hope this is posted in the correct thread.
When I was still in my physics class, we learned that a loop of wire...

Aug2114 02:06 AM
Simon Bridge

15 
365 
According Pascal law we get force high and low to the applying force.....why fluid not behave like ideal solid body...

Aug2114 02:02 AM
rcgldr

15 
273 
Reference to Griffith electrodynamics question: 1.16
Compute the divergence of an inverse square vector field.
...

Aug2114 12:07 AM
porcupine137

2 
175 
I have already balanced beam both side two same mass at same distance and it is pivot on its center of...

Aug2014 08:22 PM
D.R.U

7 
190 
For example, it could be said that the equation ∇*B= 0 is based on the observation that there are no magnetic...

Aug2014 03:17 PM
newton_1372

4 
265 
Hi everyone,
I am about to enter a local Science Fair and my project revolves around creating plasma in a...

Aug2014 02:29 PM
Physicist50

2 
170 
Hello,
We read very often that wave propagation électromagnetism is the result of an interaction between electric...

Aug2014 01:33 PM
USeptim

23 
404 
Good day! I am a beginner in Finite Element Analysis and Structural Mechanics. I have problem in understanding the...

Aug2014 09:01 AM
shawn

2 
159 
http://cognizantwire.net/HTMLKHSL/ELECTRON/MAGNETIC/MoveCharge.GIF...

Aug1914 07:47 PM
DaleSpam

12 
268 
Does anyone know how the mathematics/formulae of SHM (say a particle in a force field, with the standard a=d) changes...

Aug1914 05:27 PM
DaleSpam

4 
210 
Where is the glitch?
1. Let a single free electron move along x axis with constant speed Vx. It encounters magnetic...

Aug1914 04:25 PM
DaleSpam

46 
1,520 
Hello everyone,
as I know the regular precession of torquefree symmetric top is such a cliche, I'll try to keep...

Aug1914 03:01 PM
D H

13 
449 
an air wave takes place in volumes of air, water takes place in volumes of water... but u can have an electromagnetic...

Aug1914 10:57 AM
WannabeNewton

1 
183 
Please help me with this,
In Reheat Rankine cycle, we first Expand the steam partially in a high pressure turbine...

Aug1914 02:05 AM
tduell

1 
152 
I just start to read Mathematical Methods of Classical Mechanics by Arnold. And I am sort of very puzzled by all the...

Aug1814 11:40 PM
fisicist

13 
292 
When watching some videos about neodymium magnets, I came upon a very interesting phenomenon. Namely, the maker of the...

Aug1814 10:31 PM
Simon Bridge

5 
281 
Hi, I have a question
If im not mistaken, the Maxwell relations of theromdynamics
for example: ∂G/∂T) = S ; ...

Aug1814 07:02 PM
John Perez

7 
229 
Is it correct that the two ways that force can be 'applied' are via an Impulse or Work? I know that force is defined...

Aug1814 04:56 PM
A.T.

1 
186 
Hi all,
I have a (hopefully) quick conceptual question that I'd like to clear up with your help.
Is the...

Aug1814 04:48 PM
"Don't panic!"

16 
461 
Currently I'm reading Magnetostatics. While reading Divergence of B, I fell into a confusion that what divergence...

Aug1814 08:53 AM
AbhiFromXtraZ

14 
304 
Hi pf, I have been reading about back EMF and just had a few questions. I found this article on wiki...

Aug1814 06:21 AM
milesyoung

1 
152 
if the sun disappears, the earth would go dark and life would end ...
it would also go out of orbit
but how...

Aug1814 01:25 AM
haruspex

8 
323 
Hi guys. Let me just say at the outset that I know very little fluid mechanics but I keep coming back to the same...

Aug1714 05:19 PM
WannabeNewton

12 
361 
Maximum value of friction depends upon the normal reaction and normal reaction can be impulsive, so does that imply...

Aug1714 02:15 PM
WhatIsGravity

2 
147 
Different four potentials can generate the same electromagnetic fields. Specifically the following degrees of freedom...

Aug1714 12:04 PM
USeptim

13 
309 
I've been looking for this proof for months but I wasn't able to find something...

Aug1714 09:46 AM
Simon Bridge

1 
159 
It is well known that when the vapor pressure of a substance is bigger than the external pressure, it boils. In vacuum...

Aug1714 07:19 AM
voko

16 
240 