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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,832 
I'm trying to work out a model for a spring mass system with a force acting at the centre of mass of the mass using...

May1709 12:30 PM
Triangulum

1 
2,159 
Hi All,
I would like to know what is the main reason to build those metalic apparatus to receive the discharge of a...

May1609 10:23 PM
captn

6 
1,327 
Like university researchers measuring the force of Ricky Hattons punch with a special bag, or when programs talk about...

May1609 06:12 PM
xxChrisxx

9 
1,637 
I understand that after writing down this:
F^{ \mu v} = \partial^{\mu} A^v \partial^v A^{\mu}
We can get a nice...

May1609 04:48 PM
muppet

14 
3,513 
Making photos under the water with common camera.
Is this possible. Or this need different optics.

May1609 07:28 AM
exponent137

8 
1,106 
While reading a paper on optics, I came across "the radiance of the projector is 20 mW/cm2, expanding out onto an f/18...

May1509 10:34 PM
Andy Resnick

1 
2,672 
HELP!
I am currently working on the derivation of the equations of motion for three coupled pendula, The mass and...

May1509 04:31 PM
Dr.D

1 
997 
I've though about this for a while... If KE from object X is lost during the collision it means that the object will...

May1509 08:00 AM
Count Iblis

23 
3,769 
Just want to make sure my concepts about this fictitious force is correct...
"
Assuming Joe is spinning around on...

May1509 02:28 AM
tinytim

11 
1,588 
I understand that objects of different masses will accelerate equally in a vacuum. This is because the force of...

May1409 05:33 PM
TurtleMeister

87 
7,844 
If we have an inclined plane at angle \alpha and a sphere on that plane it will have angular acceleration due to the...

May1409 09:17 AM
sganesh88

6 
3,304 
After seeing contradictory posts on many forums , and getting differing opinions from my teachers , i'm completely...

May1409 07:54 AM
Redbelly98

29 
3,937 
I have heard that newton's third law fails to apply in certain cases.
Is it true??
and if it is , is there a reason...

May1309 09:04 PM
diazona

9 
1,498 
I was thinking the other day about how conservation of momentum works in terms of a closed system consisting of a...

May1309 08:08 PM
worldrimroamr

7 
2,559 
I would be extremely grateful if somebody could help me out with the following setup.
I have a robot arm of x...

May1309 05:46 PM
oracle3001

0 
1,565 
Impact of electric shock on human body is above all with electric current, not with electric power. The dead limit is...

May1309 03:31 PM
exponent137

3 
1,298 
I saw this post on a forum and thought it wasn't right, it's about why the force of frction on rotors is independent...

May1309 03:18 PM
AUMathTutor

3 
1,001 
Is the length of time for which an object is falling directly proportional to the force it hits the ground with?

May1309 11:48 AM
AUMathTutor

3 
772 
Considering the visual representation of an electric/magnetic field (by 'line of forces'), is this fact about the...

May1309 11:27 AM
AUMathTutor

8 
993 
Under an influence of a field, the electron distribution can be 
Theory A 
...

May1309 12:28 AM
dE_logics

3 
1,155 
Hi
assume J = I/A = equal in a circular segment of wire
then after a while those electrons forces other...

May1209 11:42 PM
Born2bwire

7 
1,710 
I would like to simulate a gasvery approximatelyin 2 dimensions. The container will be divided into a grid, and...

May1209 07:21 PM
mXSCNT

6 
1,411 
HELLO
Can anyone help me about radio frequency because i want to write report about it and i need Title of book...

May1209 04:06 PM
ecestar

0 
700 
I wonder why the amplitude of Huygens' wavelet is equal to the amplitude of incident wave multimpled by i / \lambda. I...

May1209 02:03 PM
squeezed>

1 
1,297 
Hi
I have read BioSavar , Amper law (also maxwell) about Magnetic fields
but all of them had I
biosavar :
B...

May1209 01:41 PM
conway

3 
3,414 
Potential difference is what which makes sense. But calculating the potential difference b/w two points and one of...

May1209 08:43 AM
rcgldr

9 
1,596 
Hello
we know that satelites turn around a star in ellipse path (or parabola/hyperbola)
I wanted to know where...

May1209 04:54 AM
MahbodDruid

7 
1,326 
We know the covariant Lagrangian of the Lorentz force law. However, in presence of a magnetic monopole, one must add...

May1109 11:54 PM
praharmitra

2 
1,301 
I was reading about the classic Young's double slit experiment and I had a few questions regarding secondary wavelets...

May1109 11:20 PM
WiFO215

3 
735 
Can anyone point me to a derivation of the LienardWiechart potential formulas? I assume that they can be derived...

May1109 09:05 PM
snoopies622

5 
1,364 
Can gases lower their temperature by heat radiation?
For example in a common room (at around 30°C), I know that air...

May1109 07:04 PM
fluidistic

5 
1,959 
http://www.getofftheinternet.net/pulley.png
How would you go about calculating the mechanical advantage of this...

May1109 03:14 PM
phrankle

2 
4,235 
In a textbook on wireless communications that Im reading, the author states that transmissions from a vertically...

May1109 11:51 AM
Bob S

2 
880 
Hello everyone,
I need some information with angular velocity in 3D and since I'm a math student, it's been a long...

May1109 09:05 AM
nburo

7 
4,785 
If you throw a ball straight up, say, and it reaches a height of 30 meters before falling straight down and back to...

May1109 06:51 AM
Researcher X

7 
2,269 
Hi pals
Could someone introduce me some docs about the unification of electric and magnetic forces?
thanks alot

May1109 06:23 AM
DruidArmy

8 
1,470 
Hello,
I noticed that with my radio sometimes when I am getting static if I bring my hand close to the antenna, the...

May1109 04:59 AM
Born2bwire

1 
1,428 
A metal is held by E.F...its an arrangement of electrons and kernels cause of which the metal sustains as a solid.
...

May1109 04:33 AM
Born2bwire

29 
2,242 
what is the meaning of modulation and what is types
can any one explain that to me
and give me any book.

May1109 04:06 AM
ecestar

4 
929 
Temp message
This is what a book says 
“The number of lines per unit area through a surface perpendicular to...

May1109 12:08 AM
dE_logics

8 
2,286 