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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
46,713 
I've been reading this article for a prof this summer: http://arxiv.org/pdf/1302.0245v1.pdf
I'm having some trouble...

Jun114 07:56 PM
Born2bwire

2 
233 
I was studying the equations of free fall and of launch when I realize that those equations are spetial case of a...

Jun114 06:56 PM
Matterwave

1 
190 
So I'm a diabetic and i know about the prickles meters, i want to know how they work though. I would assume it has to...

Jun114 02:35 PM
UltrafastPED

1 
143 
Is it true that the center of mass of an object will be accelerated with the same direction and magnitude from the...

Jun114 05:38 AM
Delta²

2 
228 
Hi !
2 Objects turn at constant rotational velocity ω rd/s around axis noted "axis" on image (ω clockwise). An...

Jun114 02:45 AM
CWatters

9 
431 
Hi, I am a bit confused with the relationship between gravitational field strength and gravitational potential. As far...

Jun114 02:38 AM
haisydinh

6 
279 
Question: A glass half filled with water is kept on a horizontal table in a train. Will the free surface of water...

May3114 11:21 PM
siddharth5129

15 
534 
I have been reading up on PALM works and am still confused about a few things. In particular, (1) how can you only...

May3114 08:50 PM
UltrafastPED

1 
165 
Hi. So let's say you have two identical cubes with expansion coefficients of approx. zero. These cubes are thermally...

May3114 04:38 PM
WannabeNewton

3 
201 
speed of light = wavelength X Freq. Suppose Freq of the wave is 1 Hz, then isn't ist possible that the wavelength is...

May3114 02:38 PM
Drakkith

6 
251 
Hi. I have two questions:
1) Is ΔG the amount of useful work a system can do while the pressure and temperature of...

May3114 09:50 AM
Nikitin

2 
251 
Hi,
I would like to solve the steadystate incompressible NavierStokes equations by a spectral method. When I saw...

May3114 07:00 AM
Zoli

0 
201 
The situation is as such. you have a magnetic passing through a loop(loop 1)of wire as some time t, say you also have...

May3114 02:18 AM
Delta²

5 
283 
we have an inversed pendulum(ignore the car)
http://csd.newcastle.edu.au/simulations/cart.gif
and we choose the...

May3014 06:35 PM
Andrax

3 
240 
Hello experts!
I am looking for the proof of the following equation:...

May3014 06:22 PM
jasonRF

7 
436 
The position equation for a oscillator undergoing critical damping is given by
x(t) = Ate^(γt) + Be^(γt)
where...

May3014 10:18 AM
vanhees71

1 
155 
As the spring semester is over and the summer is now beginning I was thinking that I would like to get a start on...

May3014 10:16 AM
hideelo

6 
210 
I'm reading Lanczos: 'The variational Principles of Mechanics'. I need help resolving a paradox  which is probably...

May3014 04:17 AM
Philip Wood

50 
1,320 
Lately I have been thinking about the conservation of linear momentum, and there are two cases that I can think of...

May2914 05:36 PM
DaleSpam

18 
388 
Hi, I having been looking on the internet and other threads and can't seem to find any detailed information on how a...

May2914 05:10 PM
UltrafastPED

10 
232 
Hello experts!
I wonder if there are any disadvantagês of Stêp Indêx Fibêr?
I searched for my knowledge but only...

May2914 05:02 PM
UltrafastPED

8 
226 
I was just doing a readthrough of my freshman griffith's electrodynamics textbook ( I found my comprehension of...

May2914 03:35 PM
Jano L.

3 
278 
Hey PF,
my book either got sloppy in a derivation or I am not connecting two very obvious dots.
It gives the energy...

May2914 09:12 AM
D H

2 
210 
Hello guys,
Iam doing a project to find the tension of timing belt using a dial gauge indicator,but i can't find a...

May2914 07:43 AM
CWatters

4 
265 
So what if we have two thick lenses?
Thanks in advance ,

May2914 06:46 AM
UltrafastPED

1 
178 
Why change of magnetic flux with the time through a coil induces current in it?
Please tell me that what happen to...

May2914 05:01 AM
siddharth5129

5 
270 
Hey, I don't if this is the right place to ask ( it is not a homework question but just a curious one about what i...

May2914 03:06 AM
siddharth5129

7 
254 
This question is about push bikes, but could be applied to anything with a versatile engine and a gearing mechanism.
...

May2914 01:39 AM
A.T.

3 
222 
Hello,
Im a student and I try to design a valve connected to a tank. However I have some troubles to define the...

May2814 06:53 PM
Chestermiller

1 
189 
Hello,
I need some help understanding Bernoulli's principle, flow rate, velocity and pressure.
I understand...

May2814 11:27 AM
siddharth5129

3 
362 
Hi
I am new to this forum. I am an amateur blacksmith/machinist/all around tinkerer. I took a class with a...

May2814 07:33 AM
Nugatory

4 
194 
When thinking of a spherical shaped particle moving about under Brownian motion, one describes its motion by...

May2814 07:11 AM
Steve Drake

2 
221 
Initially the pings from Malaysian airlines flight MH370 could only determine the distance of the aircraft from the...

May2714 10:39 PM
nsaspook

29 
1,961 
I am going through Mary Boas' "Mathematical Methods in the Physical Sciences 3rd Ed". I finished the chapter 3...

May2714 08:43 PM
kq6up

4 
237 
I was wondering how could I hold a lot of charge inside, for example, a ball. I thought by wrapping it in an isolant...

May2714 08:34 PM
UltrafastPED

1 
205 
Hi, I am trying to resolve a force into xyz components and I think I'm getting a bit confused.
When viewed face on...

May2714 07:03 PM
LukaD

4 
202 
I was solving a static electricity/electric field problem and I came across with one saying earth has an electric...

May2714 04:56 PM
sophiecentaur

7 
390 
Hello there, I have a problem that I've been trying to solve for some time now and I find myself struggling.
I am...

May2714 03:56 PM
mattt

1 
148 
I am aware that when charged particles accelerate or decelerate, the particle will emit a certain amount of radiation....

May2714 02:05 PM
Prince Rilian

2 
186 
What is the smallest amount of electricity (volts, amps?) required in order to create a magnet capable of spinning a...

May2614 05:21 PM
TheAzn

2 
211 