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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,841 
I am trying to derive the formula for E.m.f across the ends of a rod rotating in a magnetic field when the field is...

May2908 02:43 PM
mukundpa

2 
3,864 
Hi, I've just gone through a derivation and would like some confirmation that my reasoning is correct:
Say the...

May2808 09:19 PM
jbunten

4 
35,432 
I have a vector v = a i +bxj
Now I want to find a.So I apply chain rule and differentiate dv/dx * dx/dt = bj * Vx =...

May2808 07:56 PM
jbunten

9 
1,443 
Could everyone tell me how to calculate YAG/Al2O3 crystal saturating vaporization pressure?
P=P*exp(delt(H)/RT),but...

May2708 08:01 PM
gggarnet

0 
1,192 
I started working on statistical physics for only a few days and it maybe quiet elemantary,
how can i write the...

May2708 02:12 PM
torehan

0 
1,789 
Hi. I understand that Zernike was a physicist and that he did some work in optics, and am also aware of the Zernike...

May2708 08:57 AM
Andy Resnick

1 
1,189 
If I use a narrow slit (e.g. two fingers) to view a distant streetlight, I can see an interference pattern parallel to...

May2708 08:54 AM
Andy Resnick

18 
3,027 
Can anyone tell me if Internal\ Energy + Pressure * Volume equals heat, total energy, energy in transit?
What if...

May2708 02:38 AM
jimRH9

8 
7,575 
Suppose we have a ball made of linear dielectric with permittivity \epsilon, with some initial homogenous polarization...

May2708 01:15 AM
Euclid

1 
1,649 
Hey all, I was wondering about a varied version of something.
I know that if you run a magnet up and down a tightly...

May2708 12:27 AM
thedeepblue

3 
5,366 
How do I work out the rate of heat transfer between different states of matter? Say for example I wanted to calculate...

May2608 10:23 PM
Mapes

3 
2,691 
My thinking must be faulty somewhere, but I can't work out whats gonig on...
The equation
Tds = du + pdv and
...

May2608 04:48 PM
Mapes

2 
1,589 
I was wondering how to do the math for a bullet hitting some body armor.
Would you just divide the original force...

May2608 01:23 PM
rockerdoctor

2 
1,381 
Hello forum friends,
I have stumbled upon the fallowing heat conduction problem:
Consider a heat source of...

May2608 12:13 PM
Yoni

4 
1,685 
Hi guys
I have some questions about electrostatics, and I hope you can help me. Here they are:
1) Please take a...

May2608 06:41 AM
Doc Al

9 
4,307 
Hey
I am trying to figure out how to use the right hand rule when magnetic force points downward. I comprehend what...

May2508 11:16 PM
Col.Buendia

9 
3,159 
Hi, this question might seem really basic but I can't seem to wrap my head around it. For a DC generator (like the...

May2508 06:48 PM
cabraham

15 
4,021 
I am trying to include salt water in my Rube Goldberg project. Instead of the wires that connect a motor simply being...

May2508 04:47 PM
MadScientist 1000

1 
1,199 
I recently ran across an experiment which I needed to explain because it appeared to violate energy conservation. ...

May2508 03:17 PM
benjum

0 
3,186 
Flux = Int B dA
Why isn't this written as a double integral when we antidifferentiate over an areal?

May2408 06:38 AM
Doc Al

2 
1,969 
A few friends and I built a wave "machine." It's made by laying out brass "rods" about a foot long next to each other...

May2308 08:49 PM
bfr

3 
5,074 
Take a look at this little webprogarm...

May2308 07:32 PM
Shooting Star

5 
34,408 
I'm trying to write a Library entry on Reaction Force, and I've discovered I can't answer this very simple question....

May2308 06:05 PM
DavidWhitbeck

3 
1,666 
I know how to compute it and how to use it in equations. I do not understand what is physically happening however....

May2308 03:35 AM
dipstik

28 
5,285 
hi, im just assumin this is the right place for bernoulli stuff
pressure 1 and 2 are both static pressures, and the...

May2208 09:33 PM
russ_watters

6 
1,678 
Hello,
i would like to simulate an ideal gas flow in a cube...the cube consists of small cubes lined next to each...

May2208 04:35 PM
Lojzek

7 
4,651 
Hello. I'm having a bit of a problem. I need to calculate a change in rotational velocity on a rigid object given a...

May2208 02:26 PM
Hootenanny

4 
6,172 
We have the lefthand (motor) rule. We know exactly what happens when we run a current in a magnetic field.
Its...

May2208 10:02 AM
Shooting Star

3 
1,945 
I am a coach for athletes in various sports and have a problem that I can't figure out, but I'm hoping will be easy...

May2208 08:31 AM
Redbelly98

16 
18,813 
Do the molecules of a gas move randomly when they aren't colliding, or is it only when they have elastic collisions...

May2108 02:21 PM
Mapes

4 
2,596 
I'm trying to calculate the attractive force between two Water Molecules under the effect of an Electric field and I'm...

May2108 11:55 AM
borisete

4 
8,222 
Hello everyone, new guy here.
I'd like some other minds on an ongoing debate i have with quite a few people....

May2108 06:28 AM
Fearless

2 
4,792 
Consider two point mass particles m1 m2 (with m1 different from m2) initially stationary relative to each other a...

May2108 04:55 AM
Doc Al

10 
2,085 
Hi, I am looking for method to calculate a surface and bulk polarization of parallelepiped. there are relatively...

May2108 01:43 AM
Struchkov

0 
1,098 
Many wiki articles contained horrible mistakes for many years until just a few days ago when I started to edit them....

May2008 08:40 PM
Count Iblis

2 
1,827 
How would I go about the following:
A set of forces are pushing an object in a circle. These forces are recorded...

May2008 03:43 AM
jayakkumar

10 
2,386 
Hi!
I have been working on a rigid body subject quite a long. But till now there is an unresolved question for me....

May1908 04:58 PM
alextex

1 
2,137 
Red light mixed with green light produces yellow light. Yet, a red photon and a green photon don't combine to make a...

May1908 03:31 PM
snoopies622

3 
2,166 
Hey guys (and girls?)
I'm new here, just registered, because I have a problem that my textbooks or google can't...

May1908 06:47 AM
ingmarvandijk

1 
2,041 
Dear forum,
I'm looking for ebook version of 
"Electricity and Magnetism, Vol. II, Berkeley Physics course"...

May1908 05:34 AM
lior

0 
5,363 