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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,913 
When I have an ideal mixture of 2 liquds, A and B. so the partial pressure of A is PA=PA°xA while for B, it's...

Jul2813 09:35 AM
Chestermiller

27 
2,267 
for RF, how does this mechanism work?
http://i.imgur.com/Crx4Amx.png
how does the conductor do this? and why...

Jul3113 10:45 AM
Enigman

9 
856 
Rusty on the math...
I am working on a problem and need the derivation of a free fall trajectory for an object at...

Jul2913 03:06 PM
Creator

8 
703 
Hi,
Suppose we look at two dimensional Poisson's equation in a medium with spatially varying (but real) dielectric...

Jul2713 07:21 AM
Chestermiller

1 
541 
I've been told (since high school I think) that "view angle" in a 2dimensional plane is approximately (distance to...

Jul2913 08:03 AM
Andy Resnick

6 
1,380 
why is force equal to rate of change in momentum rather than rate of change in kinetic energy.
If we consider time is...

Jul2813 08:13 AM
bodhi

16 
1,101 
The potential due to a polorized distribution is given by:
V( \vec{r}) = \frac{1}{4 \pi \epsilon _{0}} \int _{V}...

Jul2913 03:45 PM
DrDu

20 
1,028 
When considering electric field in a dielectric media,there are two forms of Gauss's law:
\oint \vec{D}\cdot\vec{d...

Jul2713 08:40 PM
Simon Bridge

13 
688 
I am just reading through this free online textbook and it seems to me that there is a mistake on page 24.
...

Jul2613 06:19 PM
Redbelly98

3 
425 
In this video at 7:15 you see a rifle fired underwater:
cp5gdUHFGIQ
Apparently even before the bullet leaves the...

Jul3113 10:07 AM
A.T.

20 
1,516 
Hey all!
I'm building a simple low cost Fourier Transform Infrared Spectroscope as a summer project. for those...

Jul2713 06:24 PM
Drakkith

1 
411 
I am not sure I get the concept of centrifugal force..
If we have a stone tied to a thread and we just spin it in a...

Jul3013 12:03 AM
DaleSpam

35 
2,113 
I am interested in the main difference between transitions from electric fields from Conductive to Conductive/...

Jul2913 01:51 AM
DrDu

1 
363 
How to find the linear dispersion of a Direct Vision Prism with given parameters?

Jul2913 10:46 PM
itsnaresh

0 
338 
Hi guys,
After reading a paper about electron scattering, I became very interested. So if an electron is...

Jul3013 10:02 PM
Simon Bridge

6 
599 
State and justify the techniques you would use to reduce the errors of the following. Each explanation should show a...

Jul2713 11:24 PM
Simon Bridge

1 
558 
I think no matter what are the mass of two objects, there must be a fix angle between the angle of two direction.
Is...

Jul2813 02:02 AM
Outrageous

4 
790 
Hi All!
I've been doing some research in an attempt to uncover the proportionality between usable traction, which is...

Jul2913 06:08 PM
tduell

2 
518 
i think i've asked this a number of times on different posts stemming from various discussions but i don't think this...

Jul2813 07:54 PM
Drakkith

2 
475 
Since every mass attracts every other mass according to Newton's universal law of gravity, why don't I just get pulled...

Jul2813 08:05 PM
Drakkith

8 
786 
harmonics... got it.. but for instruments, whether they have a sound cavity (brass instrument or woodwind) or a...

Jul2813 06:27 PM
turbo

6 
502 
Hello everybody!
I read that if one of the two materials involved in Snell's law is a conductor, the refraction angle...

Jul3113 05:41 AM
EmilyRuck

10 
910 
Does any body here have any information about gravitational vortex power plant..?

Jul3113 11:22 AM
Drakkith

7 
752 
Good afternoon all
My question is, when we observe stationary waves, and we know that at a certain point, the sound...

Jul2913 03:58 AM
Bobbywhy

1 
648 
How exactly would you describe the principle of a valve for flow control?
In a globe valve for example the fluid...

Jul3013 04:28 AM
gmax137

5 
750 
Hi all,
I notice the patterns such as v = 0.5at^2 and PE(spring)=0.5kx^2, etc...but, all examples I have seen show...

Jul2913 10:08 PM
PhanthomJay

4 
454 
I think everybody here knows the equation that gives the potential of a point like dipole, but how does the field look...

Jul3013 02:03 AM
DrDu

1 
386 
What's the difference between cold moving air and hot moving air?
For instance, suppose you put two fans, of the...

Aug113 11:18 AM
russ_watters

11 
965 
Hi All,
I'm having a bit of trouble remember basic physics and hoping someone can help If i've got the wrong...

Jul2913 08:50 PM
basil4j

0 
390 
Batters swear that batting gloves improve their performance. From a physics standpoint, why is this?
My impression...

Jul2913 10:09 PM
Simon Bridge

1 
353 
Hi PhysicsForums.
I have a question. I was looking through a manual for an industrial grade PC, which is fanless,...

Jul3013 02:31 AM
256bits

2 
418 
http://en.wikipedia.org/wiki/Gradient#Cylindrical_and_spherical_coordinates
which formula do we apply to get the...

Jul3113 06:37 AM
igorronaldo

4 
538 
The following are Maxwell's Relations right?
\left(\frac{\partial s}{\partial v}\right)_{T} = \left(\frac{\partial...

Jul3013 09:15 AM
jtbell

1 
422 
I am trying to study the motion of a falling body in the earth’s gravitational field however not assuming a constant...

Jul3113 02:43 AM
rcgldr

10 
542 
Hello forum.
I am finding it hard to wrap my mind around the concept of power when considering forces. We can...

Jul3113 11:29 AM
Drakkith

3 
675 
So, I was wondering if a conducting loop was placed in orbit around the Earth would it be able to generate a current?

Jul3013 10:24 PM
Simon Bridge

1 
781 
Hi all,
Any ideas how to solve this integral?
$$ \int_{0}^{\pi}...

Jul3013 08:18 PM
klawlor419

2 
493 
Trying to get my head around something with the Darcy Weisbach. It is used to calculate the head loss of a moving...

Jul3113 06:57 PM
SteamKing

1 
554 
Please watch 05:00 to 08:00
http://www.youtube.com/watch?v=jbmFcGhTnS0
Force = Mass x Acceleration
So for...

Aug113 08:13 AM
DaleSpam

30 
1,859 
I'm curious what models there are for calculating the Electric Susceptibility in crystalline solids and any books that...

Aug113 01:56 AM
DrDu

1 
533 