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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,788 
How to find the Vector Potential of an infinite solenoid with n turns per unit length,radius R and current I.
since...

Jan2310 11:41 AM
fluidistic

5 
6,504 
Why is it that a vehicle travels further when skidding with locked wheels than when decelerating with rolling, braked...

Jan2010 09:49 AM
RichardH

16 
5,638 
in HuygensFresnel principle, U(P)=K*∫∫U(Q)*F(θ0，θ0)*exp{ikr}/r*d∑
K=i/λ; F(θ0，θ0)=0.5(cosθ0+cosθ) is inclination...

Jan2110 04:46 AM
ftfaaa

2 
1,216 
Hello. I'm new to the forum and I hope this is the correct place for this question. Would it be possible to lift a...

Jan1810 08:58 PM
Bob S

6 
1,484 
As far as i know, Newtons laws are.....
1st Law A body at remains at rest and a body at uniform motion remains at...

Jan2010 08:22 AM
dE_logics

21 
7,933 
Couple questions regarding Newton:
1) Sort of a historical question...In Newton's time, how did Newton explain the...

Jan2110 11:27 AM
Prologue

12 
1,226 
In the book "Fundamentals of Photonics", the form of the Gaussian beam is written as
I(\rho,z) = I_0...

Jan1810 01:16 PM
Bob S

3 
1,181 
The most general way of calculating the value of the vector electric field at a certain point P is given by the...

Jan2010 05:20 AM
jambaugh

22 
6,023 
The electric filed at a distance x from the center of a uniformly charged disc of radius R,along the axis passing...

Jan1910 02:25 PM
elect_eng

10 
5,013 
We have the following formula for the velocity of an object moving in a fluid.
v = vt vtekt/m.
This formula shows...

Jan2110 09:36 AM
GRDixon

6 
2,569 
I am confused about surface tension.
Everywhere it is written that due to unbalance of forces at surface the...

Jan1910 01:03 PM
Mapes

5 
1,763 
So, i am considering to do experiment on water and magnet for my research paper. So what i am planning to do is, i...

Jan2010 05:38 AM
cibui

5 
1,463 
I'm new to this forum, and during the 10+ hours of googling I've done I've found links to this site over and over....

Jan2010 05:43 AM
tinytim

14 
1,805 
Suppose you have an two objects A and B having different potentials \phi_A, \phi_B and voltage V=\phi_A \phi_B.
...

Jan2010 12:23 AM
vin300

6 
2,723 
In the book "Fundamentals of Physics" by H D Young and Freedman,there is formula about the time period of simple...

Jan2110 11:20 AM
Bob S

6 
1,842 
I was trying to derive the formula for the moment of inertia of a rectangular prism at its centre of mass. And ended...

Jan2210 10:38 PM
benhou

15 
7,128 
Hi. I have got two questions...
1. How can we determine the pressure at the boundary of two gas phases (say,...

Jan2010 01:00 AM
eemmann

0 
749 
In Wikipedia,
http://en.wikipedia.org/wiki/Noether%27s_theorem#One_independent_variable
You can see the proof...

Jan2010 10:08 AM
timewalker

0 
768 
Hello,
I'm having a discussion with my work colleagues, we can't agree about a physics question:
There is a...

Jan2210 05:51 AM
nalA

11 
1,634 
Please explain.

Jan2010 10:34 PM
Daveman20

2 
1,158 
WARNING: Sorry about babbling on, the question is probably really simple and all this text is pointless, so for those...

Jan2310 09:42 PM
kusiobache

5 
1,399 
I'm pretty rusty on my statics. I'm wondering how I could determine the reaction at four points arranged in a...

Jan2110 10:58 AM
tinytim

3 
782 
Our professor said that when a metallic body or a conductor is inserted inside a gaussian sphere, it will not...

Jan2110 12:22 PM
GreenLantern

1 
1,897 
It is known that the motion of a charged particle creats a magnetic field and also at speeds approaching c there will...

Jan2210 12:29 PM
tinytim

9 
2,858 
I was looking at a derivation of entropy expressed as an absolute probability:
S = k. SUM P.lnP
(What is the name...

Jan2310 12:26 AM
Gerenuk

1 
1,333 
I was at work and we build a "fence" on a trailor to keep the load in place, and we got into a disagreement about how...

Jan2110 08:05 PM
Zula110100100

0 
1,070 
How does the coriolis effect have role in the precession of gyroscopes?http://en.wikipedia.org/wiki/Precession
In...

Jan2310 05:26 PM
Cleonis

15 
7,527 
Let us assume a bird to be moving in a straight line with a velocity 'u' and a man to be chasing it with a velocity...

Jan2410 08:48 AM
arildno

4 
992 
Hi,
new to the forum here
I have this bikeengine here and I am thinking whether it would be possible to mount it...

Jan2210 09:11 AM
badshot

0 
2,779 
I am attempting for my own curiosity to find out at what point during a geodesic path from the Earth to the Moon one...

Jan2310 11:47 AM
GRDixon

1 
3,162 
Hello everyone
I'm quite confused here and would really appreciate help.
Consider a spring standing upright with...

Jan2410 03:38 AM
arildno

11 
2,918 
Let pressure equation of sound wave be
\Deltap=Pocos(\omegatkx), then
what will be the density equation of the...

Jan2310 02:13 PM
abhineetK

2 
1,202 
So we are designing a roller coaster for a project, the roller coaster starts at 100m above ground and it has to go...

Jan2310 09:45 PM
Bob S

1 
812 
Suppose we have a universe consisting of three planets. Their velocities and positions at t=0, and the gravitational...

Jan2310 09:59 PM
ImAnEngineer

5 
1,986 
According to "Introduction to Electrodynamics"  Griffiths
I have a few questions about the bolded section
...

Jan2410 05:33 PM
Identity

0 
655 
what is the formula for magnitude and what exactly is it?

Jan2410 09:14 AM
GRDixon

2 
724 
Hi. I'm having trouble understanding exactly what characterizes a thermodynamical state. I mean, how many numbers do...

Jan2410 08:40 AM
daudaudaudau

0 
679 
I got this formula for the magnetic field of a squareshaped coil: B = m0*2*sqrt(2)*I*N/(a*pi), where m0 is the...

Jan2410 12:31 PM
clem

3 
4,315 
Hello,
I'm trying to make sure I understand the basics of statistical mechanics and microstates/macrostates.
...

Jan2410 12:59 PM
Gerenuk

1 
1,253 
I am wondering how is the third equatio of motion derived, I was reading a text on my physics course which it is very...

Jan2410 04:39 PM
diazona

5 
1,248 