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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
48,204 
does not slide.

Oct209 06:31 PM
mathman

1 
802 
Hi All
I would like to know why is it so difficult to calculate by integration the electric potential energy of an...

Oct209 03:34 PM
clem

6 
1,043 
Electricity (the flow of current) is said to travel at near the speed of light (7590%), but I read that electrons...

Oct209 12:54 PM
antd

38 
13,212 
Probably an easy one...
So, I understand the idea of precession on a gyroscope: we've got the angular velocity...

Oct209 12:17 PM
Cleonis

2 
844 
I'm trying to get some sort of value for the electronic contribution to the thermal conductivity of copper.
Most...

Oct209 02:26 AM
Vanadium 50

2 
1,079 
I read in the Feynman Lectures, section 58 in Volume 2, that Coulomb's law may begin to break down at distance scales...

Oct109 10:54 PM
Bob S

3 
1,507 
hi !
I am assigned a project for which I need to look at the detailed dynamics of a carriage drawn by multiple...

Oct109 08:37 PM
nucleus

1 
919 
Hii,
First of all, I'm from Brazil and my english is not so good!
I've been studied the follwing problem for...

Oct109 07:01 PM
taq

0 
2,433 
I know that the work done on the system in any free expansion is 0 since the external pressure is 0. However.. is q...

Oct109 06:15 PM
scorpion990

4 
1,626 
ok im not sure what this kind of motion is called but it is caused when a cylinder, a AA battery lets say, is liying...

Oct109 02:38 PM
htetaung

2 
692 
I have been trying to do some research, but the more I search, the more confused I get (praise physics for that one)....

Oct109 02:00 PM
Bob S

1 
781 
There is no net gravity in a hollow sphere. You can get this result using calculus but that's not really...

Oct109 01:30 PM
stone1

29 
13,480 
Hello.
I've got a magnet of a determinate radius and a coil.
Which radius should i give to the coil (in function of...

Oct109 12:51 PM
encomes

0 
469 
Hi everybody...
this is my first topic here.
I'm solving problems for the phd test here in my university. Here's...

Oct109 12:05 PM
nonhermitian

6 
3,039 
Hey guys,
I am kinda simulate car dynamics with given parameters. I actually want simple solution. I have been...

Oct109 09:29 AM
dehseth

12 
6,810 
I was wondering if someone could help me this NavierStokes Equation.
f = DP + Dt + f
Could someone maybe...

Oct109 08:42 AM
Andy Resnick

2 
1,845 
hi. i live in a backwards country.
the optics textbooks here do not really go into enough detail.
how do i...

Oct109 06:23 AM
iffybom

0 
447 
Hi,
new to the forum, I was shown a graph (hopefully I can upload it).. it is to do with porosity, but I don't think...

Oct109 05:45 AM
geo_lane

0 
535 
Hi all, got a little physics problem that I wonder if anyone could help me with.
I'm using an accelerometer to...

Oct109 02:59 AM
nidhi.monika

7 
7,823 
Hi, thanks in advance for any help and info. Have two conditions.
The first condition is a mass of water spinning...

Sep3009 04:13 PM
trustthrust

2 
3,464 
I've been trying to find the answer to a question i have online but haven't had much luck.
Where did Stable or...

Sep3009 02:35 PM
DaleSpam

2 
984 
Hello,
I am a tactical driving instructor and a precision/stunt driver. For more than 15 years I use high PSI tire...

Sep3009 05:25 AM
xxChrisxx

1 
7,154 
We know that the more electrons there are in the valence shell of an atom, the stronger the London Dispersion Forces...

Sep2909 10:59 PM
sermatt

1 
652 
if you have mass and displacement on a horizontal surface how do you find acceleration

Sep2909 10:46 PM
Vanadium 50

1 
872 
are the forces acting on the passenger seating in the back seat of the car different from the forces acting on the...

Sep2909 04:46 PM
0xDEADBEEF

1 
1,481 
Sorry for such a simple question, but what are the differences between using insulation and heat reflective material? ...

Sep2909 04:20 PM
0xDEADBEEF

1 
1,523 
hi,
a doubt regarding rolling motion of a ball down the incline has been giving me sleepless nights for a couple of...

Sep2909 08:54 AM
shohin

10 
1,170 
Hi,
From knowing that the 3D harmonic oscillator has 3 degrees of freedom, how do you conclude that the average total...

Sep2909 07:43 AM
conway

15 
10,003 
Hello all,
I understand the fact that the principles
LaTeX Code: F= \\nabla \\phi .
LaTeX Code: \\nabla...

Sep2909 12:11 AM
sleventh

2 
1,149 
I have a question:
I have two plates that form a right angle. How would I go about finding the Capacitance of the...

Sep2809 09:27 PM
Born2bwire

4 
1,184 
Hi,
Why is there a difference in electric potential from a point on the surface of a stationary magnet to a point...

Sep2809 06:09 PM
Bob S

4 
1,393 
I've asked myself the following question but couldn't think about an answer.
Imagine a hypothetical situation : you...

Sep2809 05:55 PM
Bob S

5 
1,650 
hello, i'm using an accelerometer (ADXL311) which outputs analog voltage in proportion to g's for X and Y axes. i'm...

Sep2809 02:59 PM
nidhi.monika

5 
7,966 
If a car crashes into a solid unbreakable wall, how is momentum conserved (I know it must be). To me, it seems that...

Sep2809 01:51 PM
willem2

3 
2,432 
What would cause more injuries to the passengers of each car?
a) car colliding against brick wall.
b) car colliding...

Sep2809 01:44 PM
XanziBar

1 
1,213 
A few questions about electric field here:
1. Why do charges have to be on the outer surface of the conductor?
2....

Sep2809 11:37 AM
DaleSpam

8 
4,552 
Hey all,
Can someone please tell me why is the trace of the Jacobian of an integrable hamiltonian system equall to...

Sep2809 12:02 AM
thrillhouse86

1 
868 
When working on homework problems having to do with voltage, there is often the stipulation that V=0 at infinite. If...

Sep2709 12:58 PM
kanato

1 
2,238 
Hello
The Foucault experiment is based on the non rotation of the oscillation plane of a classical pendulum. Maybe...

Sep2709 12:39 PM
Cleonis

7 
2,068 
I recently purchased a new microwave oven, and there's a metal rack in it. The salesmen informed me that it shouldn't...

Sep2709 11:38 AM
kashiark

9 
5,865 