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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,870 
I am going to be simulating damped driven oscillators for my project and I was wondering if someone could give me a...

Jan2813 01:06 PM
great_sushi

3 
665 
What is the difference between Generalised coordinates and Degrees of freedom in classical mechanics? I know that...

Jan2813 10:43 AM
Aniket1

9 
911 
There is a problem about precession in general that I am trying to understand, and it can be exampled by electron...

Jan2813 09:56 AM
Nemanja989

15 
901 
Period does not depend on amplitude. Correct?
I deduced this from the equations for simple harmonic motion:
...

Jan2813 07:45 AM
G01

1 
710 
I've rencently been thinking about several systems related to fluid mechanics, and I've asked myself the following...

Jan2813 06:15 AM
Chestermiller

7 
1,568 
An object (a tin can for example) orbiting the Sun at about the same distance as the Earth would be what temperature?

Jan2813 05:36 AM
mrspeedybob

2 
600 
So I noticed that when learning about Liouville's Theorem in class, that it was described in terms of ensemble: i.e;...

Jan2713 09:21 PM
nrivera1

0 
506 
We know that the Young's modulus of an object is defined as the ratio between its stress and strain:
Y = σ/ε
,...

Jan2713 06:48 PM
FredericChopin

5 
7,469 
http://i.imgur.com/YkaYsq3.gif
Hello.
I need help clearing up who's gaining potential energy and who's losing...

Jan2713 05:55 PM
rainstom07

0 
771 
Hi,
I am trying to derive a formula for the path taken of a body in a Gravitational Field using Classical...

Jan2713 03:41 PM
VVS

10 
863 
I have a problem which got me thinking, but I'm unable to solve to my satisfaction. The problem involves a gyro...

Jan2713 09:46 AM
Ryoko

9 
1,280 
Hi,
I don't understand this:
You got a dipole, and a resulting electric field from it like this(hyperphysics):...

Jan2713 08:23 AM
stevendaryl

3 
857 
My book says:
\frac{\partial V}{\partial s}\frac{ds}{dt}=\frac{1}{\rho}\frac{dP}{ds}g\frac{dz}{ds} (1.28)...

Jan2713 08:02 AM
Studiot

1 
586 
Can anyone explain point 44 of the attached pdf document on surface tension.
(Here's the link in case attachment...

Jan2713 07:06 AM
andrien

1 
542 
As the title suggests, there is a practical in which we have to find mass of the spring (m*) having a block of mass M...

Jan2713 07:01 AM
andrien

1 
477 
Hey!
Yesterday I was on the Czech Physics Olympiad. There were many examples. To one, however, I did not invent...

Jan2613 08:01 PM
Simon Bridge

1 
407 
Im having a discusion reguarding what temperature (celsius) supercooled water needs to be if it was to freeze...

Jan2613 05:38 PM
Spinnor

4 
560 
I understand that for a fixed massflow the minimum amount of power required to generate a thrust is: P = Massflow * ∫v...

Jan2613 05:05 PM
sophiecentaur

14 
1,710 
Suppose we are far from a 1000 watt source of constant radio frequency electric dipole radiation, say R/λ > 1000....

Jan2613 03:51 PM
Spinnor

0 
387 
Do you know chemtrails? http://en.wikipedia.org/wiki/Chemtrail_conspiracy_theory
I want know more about it! Please,...

Jan2613 01:52 PM
bigfooted

2 
445 
Hi,
In the equation
y(x,t) = ym * sin(kx  wt  PHI)
I thought I understand why we have that phase constant...

Jan2613 01:35 PM
Philip Wood

1 
468 
So I did this lab: http://www.physics.ryerson.ca/sites/default/files/u11/exp/exppcs125/SHM.pdf
Essentially, we have...

Jan2613 01:29 PM
vanhees71

9 
1,280 
Their equations are identical. Is there any difference between the two?

Jan2613 12:41 PM
Studiot

4 
1,717 
I vaguely read about this idea about using particle accelerators as hyperdrives
Does anyone know any more...

Jan2613 09:00 AM
GreenAce92

4 
482 
I came across a rather confusing topic about Work Energy Theorem and Potential Energy applied in lifting a particle.I...

Jan2613 04:26 AM
mihirviveka

7 
1,464 
I often see the EM Hamiltonian written as $$H=\frac1{2m}\left(\vec p\frac ec\vec A\right)^2+e\phi,$$ but this...

Jan2613 03:49 AM
vanhees71

4 
674 
Hello, just had a quick silly question about the coulomb gauge here, though I guess it applies for gauge...

Jan2613 02:00 AM
vanhees71

1 
661 
Hi I recently purchased a small (15mmx15mm) Peltier Thermoelectric Cooler/Heater. I am using this for a prototype of...

Jan2513 11:52 PM
Bobbywhy

1 
565 
i am currently reading griffith's book on electrodynamics, though he does an excellent job with the theory (along with...

Jan2513 11:09 PM
bigerst

0 
390 
Okay, question, do I live in a smaller world than people with normal eyes?
I noticed that when you look over your...

Jan2513 10:31 PM
DiracPool

9 
1,051 
Hi,
I am wondering why microwaves don't escape through the door?
The most common answer seems to be that the...

Jan2513 07:02 PM
Drakkith

18 
1,742 
A question my friend gave me the other day:
If I start humming a constant note and, once 1/2 a wavelength exits my...

Jan2513 06:04 PM
sophiecentaur

4 
478 
Hi,
I am designing a device which has cameras need to see through a sheet of glass at angle very low, near zero....

Jan2513 04:01 AM
mickybob

2 
656 
Let us denote by X^i=(1,\vec 0) the Killing vector and by u^i(s) a tangent vector of a geodesic, where s is some...

Jan2413 11:02 PM
WannabeNewton

3 
1,055 
Stirling engine: the cycle is composed by two isothermals and 2 isometrica and there are just two heat reservoirs.
...

Jan2413 12:03 PM
Studiot

24 
2,515 
I am curious if someone can help be estimate heat sinking and dissipation in an Aluminum structure? What I am trying...

Jan2413 08:57 AM
CWatters

3 
891 
Hello,
I was recently pulsing a coil at fairly high voltages (200600VDC) using DC squarewave, at fairly high...

Jan2413 06:35 AM
DeepCut

13 
1,069 
I'm just uncertain (haha), what IS newton's Second law exactly?
F=ma, or F=dp/dt, aren't these defining equations for...

Jan2413 06:21 AM
Jano L.

12 
1,686 
Hello all,
is there a way to calculate the width of a waveguide required (slab and ribbed) made of silicon with...

Jan2413 04:09 AM
ooe

0 
576 
Hello,
I am currently making a video game and have run into a bit of a physics problem. I have taken two semesters...

Jan2413 01:57 AM
drfrev

11 
948 