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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,758 
Hi all,
I hope that I'm posting in the right section of the forum. If not, I kindly request a moderator to move the...

Feb2812 06:39 PM
BaCaRoZzo

0 
838 
This likely represents a physical impossibility or contradiction, but I'd like to know that or, if not, understand...

Feb2812 06:30 PM
DrewD

6 
956 
I have a question about the ideal equilibrium MHD equation:
\vec{J} \times \vec{B} = \nabla p
where \vec{J}...

Feb2812 05:17 PM
vibe3

0 
1,119 
I know this is more of a chemistry question but it's come to this I'm afraid.
When calculating entropy changes in...

Feb2812 03:28 PM
tomothy

0 
1,296 
Hello,
I am trying to measure a couple of things related to thermal data. Is there a way to measure a transient...

Feb2812 02:06 PM
ProgrammerUK

0 
946 
Hi  am looking for some data points on how much suction is required to lift an object at different weights and...

Feb2812 11:30 AM
DaveC426913

1 
747 
I have a system that looks like this:
http://i.imgur.com/zKjqb.jpg
The top part is a piston, whereas the bottom...

Feb2812 08:58 AM
Kalus

0 
718 
As I was sitting at work the other day productively watching an aeroplane fly across the window I started to think of...

Feb2812 07:49 AM
Hassan2

5 
681 
I attached a file that shows the free EM action integral and how it can be rewritten. I would like to know how to go...

Feb2812 05:46 AM
Lapidus

1 
1,074 
Hi Guys,
Is there an easy way to determine this?
Say I have a 300mm Dia Pipe that @ 200deg C, ambient temp 30gec...

Feb2812 05:20 AM
xXx

6 
1,132 
I'm a little bothered with the inconsistency in notation of electric potential (V) and potential difference (ΔV)...

Feb2812 03:09 AM
Philip Wood

2 
1,243 
Few years ago, we have known about the phenomenon that Coca cola is overflow severely when a piece of Menthos candy is...

Feb2812 03:02 AM
NascentOxygen

3 
980 
I can't seem to figure out this question.
A Thermometer is filled with unknown liquid. It has a square bulb and a...

Feb2712 05:13 PM
SAFiiNA

3 
1,646 
If a ball, mass 10kg, is displaced 5m by a gravitational acceleration or 10 m/s², what is the work done by the...

Feb2712 01:15 PM
Blibbler

1 
1,047 
Assuming that the polymer walks randomly in each dimension, (with arbitrary D dimension) independently. Can I say...

Feb2712 01:06 PM
hansbahia

0 
507 
IF a material say a ferromagnet is placed in a magnetic field Bo then there will be an additional field due to...

Feb2712 11:31 AM
Hassan2

7 
1,862 
I don't understand conceptually how something accelerating down weighs less. For example, the elevator example of...

Feb2712 11:18 AM
DrewD

5 
1,363 
Are there any mysteries yet unexplained in Classical Physics, Thermodynamics or Statistical Mechanics? Or do all the...

Feb2712 09:06 AM
absurdist

7 
1,458 
Hello seniors..im a undergrad student from hyderabad ,India. Presently im am doing a theory based research project on...

Feb2712 05:09 AM
strafer

0 
904 
Greetings everyone,
While I was studying on my own using MIT OCW, I came across the following document. In that...

Feb2712 04:07 AM
Hassan2

13 
1,257 
I'm having a little trouble wrapping my head around the idea of electric displacement fields, it doesn't fit in with...

Feb2712 12:33 AM
Arijun

1 
1,018 
I'm doing example 2.1 in Griffith's Electrodynamics book. Can someone explain where the cos(theta) comes from in the...

Feb2612 06:37 PM
jinksys

3 
1,200 
When an electron moves( or any charge particle moves) it creates a magnetic field around it according to biotsavarts...

Feb2612 07:18 AM
ZealScience

6 
1,021 
http://img849.imageshack.us/img849/9018/curvess.jpg
So pump curve, as flow increases, pressure drops. For the...

Feb2612 05:49 AM
dushizhe

6 
3,333 
I need to calculate the magnetic force exerted on a ferromagnetic body in a magnetic field. One method is based on the...

Feb2612 03:27 AM
Hassan2

0 
1,095 
any help is good
so i was thinking about a string and a mass hanging from the center (not tied) of it(any mass "m"...

Feb2612 01:20 AM
uknew

6 
1,834 
I am trying to determine what the best motor would be for me to achieve an rpm from 0250 with a maximum 50lb load...

Feb2612 12:59 AM
uknew

6 
1,823 
I've recently attempted to calculate the force of repulsion between two neodymium magnets. The problems arise fairly...

Feb2512 11:53 PM
Hassan2

23 
3,260 
After determining the canonical partition function you can determine the energy as a function of temperature. Now how...

Feb2512 05:22 PM
hokhani

0 
1,497 
Could you let me know which formula is Newton's Gravitation Law used for the three body or n body problem in general?...

Feb2512 12:03 PM
Hassan2

2 
859 
How does y(x,t)=f(kxwt) represent a wave ,and how is(kxwt) and (wtkx)?

Feb2512 12:00 PM
Fazan Mushtaq

0 
761 
I'm sure this topic has been asked before so I'd be happy if you'd just direct me to the thread.
I know U+PV=H and if...

Feb2512 11:58 AM
juanrga

1 
2,471 
μ/T represents the change in entropy if we change the number of particles,, so according to the fundamental assumption...

Feb2512 11:55 AM
alemsalem

0 
848 
Hi everyone,
There are 2 things I do not understand in the derivation of kinetic energy from work:...

Feb2512 11:49 AM
juanrga

6 
1,570 
When a ruler is placed on a pivot and I push it down from one side, then there is a moment. But then is there any...

Feb2512 09:02 AM
sgstudent

4 
1,323 
When I am reading the papers about the breakup of the liquid jet flow, I get to know that Weber improved the linear...

Feb2512 08:18 AM
Chuck88

0 
687 
For a rod magnet, how is the field inside the rod change if another piece of ferro magnetic material is being brought...

Feb2512 05:53 AM
Hassan2

3 
1,039 
Hey,
Imagine a frictionless inclined plane situation where the ramp goes up and to the right.
If we put an...

Feb2412 04:00 PM
Ken G

3 
1,960 
Hello,
I'd like to know how to calculate the transport of a certain volume of water in a vertical wick system.
...

Feb2412 02:17 PM
matthh

0 
796 
IS huygens principle a consequence of isotropy of space? According to wikipedia...

Feb2412 02:12 PM
harrylin

3 
910 