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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,737 
Hi there,
I've been looking over the internet for a while and I am looking to find the terminal velocity of a tennis...

May2509 10:16 PM
Pengwuino

2 
4,845 
Hi, I really want to learn about the applications of quaternions in Physics (I have posted in this section as...

May2509 07:08 PM
Cantab Morgan

3 
964 
Hi
Firstly, this is not a homework problem. It's regarding some flow experimental results I have and to understand...

May2509 09:33 AM
Mapes

3 
14,518 
Hi,
My name is Andy im a new user here. Im having a bit of trouble deriving the difference between the Francis...

May2509 09:07 AM
14andyhigg

0 
2,595 
Hi all.
Usually we have worked with electromagnetic waves linearly polarized along the zdirection (or x or y for...

May2509 12:16 AM
Born2bwire

11 
2,998 
I have a question that annoys my basic understanding of kinetic energy.
I know if I have a forcetime plot then the...

May2409 10:03 PM
dE_logics

3 
2,293 
Hello, I have a question about a seesaw / lever problem. Does this configuration I have shown here allow me to treat...

May2409 09:55 PM
dE_logics

1 
1,577 
I'd like to ask how to calculate the rate at which the temperature changes, knowing the power input and the specific...

May2409 09:41 PM
dE_logics

4 
6,995 
Hello, We are studying the parameters of streamer in air. We create the compute model of streamer, but in our...

May2409 08:38 AM
antvyk

0 
691 
Electron oscillate at their natural frequency. I know the force that brings them back is a force of attractrion...

May2309 09:32 PM
Bobbywhy

18 
7,490 
Elastic collision. I cannot find the after collision velocities (quantity and direction), when 2 spheres strike an...

May2309 12:45 AM
luckis11

5 
1,523 
Hello,
I'm reading a paper and find a figure difficult for me.
In figure(a) EM wave(that is 1) is incident from the...

May2209 09:19 PM
lavie

0 
1,180 
We've got a set of Chatter Rings (http://www.youtube.com/watch?v=s0bZ9Ko21XA&feature=related), and are wondering...

May2209 02:51 PM
TheBaker

0 
1,680 
My basic question is this. Can usable energy be extracted from a mechanism that has force only, no movement. Here is...

May2209 02:11 PM
zydubion1

4 
717 
Hi, I have the fields for a rectangular waveguide in terms of cartesian components, that is, Ex, Ey, Hx, Hy. I need to...

May2209 11:21 AM
garethstudent

2 
1,788 
Temporarily communicating vessel isolated hydroelectric power plant with swimming piston, driven through hydrostatic...

May2209 09:20 AM
russ_watters

1 
884 
Rear wheels' rigid positioning parallel to the longitudinal axis of the vehicle somehow makes the vehicle (two as well...

May2109 10:19 PM
sganesh88

25 
2,387 
I was just reading up some stuff about tides. Kind of figured this thingie out, hope my understanding is correct
...

May2109 10:12 PM
raknath

24 
3,283 
Hey guys, I've just starting learning about electric circuits at school and there's something I just can't seem to get...

May2109 06:46 PM
russ_watters

9 
1,014 
First of, PhysicsForum is the best thing ever XD
Hello everyone, I'm trying to write a research paper about...

May2109 03:15 PM
nburo

4 
884 
Hello to all:
Suppose we have two photons that are 180 degrees out of phase. We can assign one unit of energy to...

May2109 08:22 AM
Bob_for_short

11 
3,022 
Hi,
I'm building a simple 2D simulator for mobile robots, and I'd like to be able to determine the translation and...

May2009 05:21 PM
Han Fastolfe

2 
5,410 
Hello All,
I am wondering why the presence of a dielectric reduces the potential difference of a capacitor (after...

May2009 03:21 PM
jtbell

5 
1,983 
Hi!
In a book it said that it can be clearly seen from the interatomic potential (such as the Lennard Jones) that...

May2009 10:12 AM
trelek2

3 
3,155 
just like the title says at what angle can you put the front wheel of a bicycle in relation to the ground and still be...

May2009 09:55 AM
belliott4488

1 
2,106 
I have a component made of some sort of stamped steel which has a significant magnetic field (upto 2000mGa) which I...

May2009 08:51 AM
turbo

4 
870 
A lot of physical phenomena tend to be explained (at least on a superficial level) by referring a current or particle...

May2009 06:56 AM
parsec

3 
2,315 
Hi, I have a simple question: if I have a circuit with a capacitor, how do I calculate the voltage on the capacitor in...

May2009 05:38 AM
DIrtyPio

2 
915 
I need to compute the energy to get a truck and trailer from 0 to 60 mph from rest taking into account the mass of...

May2009 05:12 AM
CH_GR

4 
1,897 
i have a personal project that has been brewing in my head since high school. i want to make an electron trap that is...

May1909 07:13 PM
microfracture

0 
1,189 
Some basic curve integration leads me to the believe, that if you stack two coils into one another with opposite...

May1909 04:43 PM
0xDEADBEEF

2 
583 
Hi
we connect a Voltage to heads of a conductive wire
how will be the field lines inside Wire ? (cylinder wire)
...

May1909 04:11 PM
Bob S

2 
1,609 
I am trying to grasp how Maxwell's equations and energy/photons are related in a doppler shift problem.
The way I...

May1909 03:31 PM
0xDEADBEEF

1 
1,253 
My friend has been shocking me and friends with part of something (a lighter maybe) he found. We even got the shock to...

May1909 02:24 PM
0xDEADBEEF

8 
1,857 
Hi,
How do we relate F*d (Units: Nm.) with energy (Units: joule.). What is the logical link there?
I am...

May1909 08:14 AM
fatra2

2 
1,045 
Hello.
I know that entropy equals the Boltzmann's constant times the natural log of the multiplicity but I do not...

May1909 02:30 AM
vipul_rop88

4 
9,991 
how does one perform a frequency sweep to obtain resonant frequency?
for instance, if the inductance is 50mH and...

May1809 03:10 PM
Bob S

5 
5,675 
Simple question.
So in an example question I'm lookin at finding the work between 2 points on a line.
The points...

May1809 03:04 PM
Nick89

5 
959 
If we consider an isolated system in which a process occurs, then according to the clausius inequality :
dS \geq...

May1809 11:51 AM
Andy Resnick

32 
10,161 
Is temperature frame dependent?
The temperature of the system is due to the translational,rotational and...

May1809 11:23 AM
Bob S

3 
1,862 