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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,685 
hi all...it is said that constructive interference happens when the path difference is nlambda and i think...

Sep207 09:11 PM
Claude Bile

5 
1,837 
Hey. I'm a serious runner, and lately I've become very interested in biomechanics and running form. One thing I've...

Sep207 07:40 AM
Astronuc

5 
2,157 
i am confused at how this theory assumes the new hamilitonian, K, equal to 0 and the new canonical coordinates and...

Aug3007 04:17 PM
captain

0 
3,338 
hi ..
so i got this galvanoplastic tub ,yes i like coating iron stuff with copper coat ;)
the problem is when i...

Aug3007 01:50 PM
raven4d

0 
2,882 
by definition, a charge cannot move inside an insulator
and by a similar definition, a charge can move inside a...

Aug3007 10:58 AM
bernhard.rothenstein

11 
4,002 
Would someone, PLEEEEAAAASSSEEE, explain here how holography actually works.
...I mean  I know (I've already read...

Aug3007 10:21 AM
Electronica

36 
6,075 
Hi there...
As English is not my native language I want to apologise up front for any mistakes.
I have tried...

Aug3007 09:50 AM
rewebster

7 
4,129 
Hi All;
I try to find the frictional torque on a high speed spindle. There is no flow past the cylinder, the flow...

Aug3007 09:13 AM
eaglemre

0 
2,377 
how do u define rotational kinetic energy when the body is rotting about more than one axis. as an example take a ball...

Aug3007 05:53 AM
Europeman

9 
2,451 
this is in relation to this post of mine.
my question is what is the direction of tension inside a rod (thin ) of...

Aug3007 05:26 AM
pardesi

17 
1,856 
Defining the period measured by a moving observer relative to a stationary source as
T=t(n)t(n1) where t(n) and...

Aug3007 04:19 AM
bernhard.rothenstein

2 
3,133 
I am interested in learning about how automobiles are designed from a physics/engineering perspective (i.e. what are...

Aug2907 02:18 PM
Danger

6 
1,324 
Hi
First of all, since magnetic field in a wire carrying current is due to the movement of electrons, I assume that...

Aug2907 10:14 AM
genneth

24 
3,784 
I'm having difficulty with a problem on MasteringPhysics (such wonderful software...) and as a last resort I'm posting...

Aug2807 08:39 PM
Gaupp

3 
3,976 
Hi,
Does anyone know how to calculate the astigmatic difference (focal length difference) for an offaxis spherical...

Aug2807 04:41 AM
bparker

0 
1,479 
http://www.cco.caltech.edu/~phys1/java/phys1/MovingCharge/MovingCharge.html
"As time goes on, the line becomes more...

Aug2807 04:35 AM
stmartin

2 
1,509 
Here's a quick one:
If the generalized force F is not zero,
does the equation
dH/dq = pdot
become
dH/dq = F...

Aug2707 08:16 PM
jhat21

4 
7,388 
well iwas going through the standard example that is there is a uniform magnetic field in aregion going into the palne...

Aug2707 07:09 PM
Paulanddiw

59 
7,227 
Hello!
I had a question about the vortex panel method.. I used such a method to calculate (succesfully!) the pressure...

Aug2707 02:43 PM
Genik

0 
1,801 
Hi everyone. This is my first post here...
I want to create a numerical simulation in software, to solve the...

Aug2607 10:25 AM
sidman

0 
3,862 
Ok, so i was talking to my friend about life, the universe and everything, and the conversation swung to the 'dumbing...

Aug2507 05:25 PM
LURCH

4 
2,284 
On this picture there are electron and proton. As far as I know the forces should be opposite. Am I right?...

Aug2507 12:39 PM
neutrino

5 
1,179 
Hi, I'm currently doing a research study on the effect of the presence of a rear car spoiler on the lift of a vehicle...

Aug2407 11:22 PM
Idjot

31 
14,592 
what does magnetic moment mean?

Aug2407 05:50 PM
jtbell

2 
1,592 
Hi everyone! Here's something that has been bothering me for quite some time now:
If you detonate an explosive device...

Aug2407 01:37 PM
sohai

22 
2,230 
My mind is currently in a mess regarding the equivalence of gravitational mass and inertial mass. Yes, I know which...

Aug2407 12:07 PM
neutrino

2 
4,011 
When light propagates in a dielectric its wavevector is given by:
k = \frac{\omega n}{c}
where n is the...

Aug2307 07:55 PM
olgranpappy

2 
1,593 
Can someone please explain this ?
Let's say u have a slit through which waves have to pass .
In order to...

Aug2307 07:28 PM
olgranpappy

4 
3,360 
I started asking this question after one of my students had trouble with a problem asking for the net force on a...

Aug2307 10:38 AM
rewebster

17 
4,660 
Hi,
I am trying to make a simply model of a snowboarder for a computer game.
I have implemented basic friction,...

Aug2307 01:19 AM
cesiumfrog

5 
3,352 
This is a concept that has always eluded me. I'm a Biologist who works in the Pharmaceutical Industry and I need to...

Aug2107 03:02 AM
Imagelist

15 
3,428 
I am having a course on classical mechanics and find it rather hard..I mean its just too mathematical for me.. I find...

Aug2007 04:26 AM
zergju

0 
4,906 
Hi,
I am trying to compute the moment of inertia of the Cavendish pendulum. I used
I = 2(m r^2)
r = gyration...

Aug1907 11:09 PM
Pioneer1

4 
4,729 
:confused:every body has definite shape and size and also the centre of gravity.so i want to know a certain body have...

Aug1907 06:33 AM
Doc Al

1 
1,403 
I want to create a floating boat ramp for my dogs. The dogs weigh 50 and 75 lbs each. I have seen commercial ramps...

Aug1807 11:25 AM
Danger

5 
4,031 
This is a highly ideaized problem.
Find a collection of stationary point masses on the unit line such that:
1)...

Aug1707 03:59 PM
olgranpappy

22 
2,670 
I just want to ask you something. If the electrons are surround by force around them, why that force is not...

Aug1707 01:57 PM
Doc Al

13 
1,726 
well consider a loop L a very big one i.e enclosing a large area. say in some small part of the lopp say approxiamtely...

Aug1707 11:18 AM
pardesi

2 
1,091 
I have a question about the electrons in atoms. This question is from quantum mechanics, but it is really a situation...

Aug1707 10:04 AM
marlon

12 
1,891 
are lagrangians based on physical observation or mathematical reasoning?

Aug1707 03:47 AM
captain

6 
1,842 