
Before posting anything, please review the Physics Forums Global Guidelines.
Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,886 
Hello friends,
I recently, was reading all about the accelerating charges and radiation, but somehow the classical...

Sep712 03:21 AM
vanhees71

26 
2,809 
Hi there,
I'm working on some experiments regarding to gases. I want to know what'd happen to gas which is uneder...

Apr108 04:16 PM
russ_watters

9 
2,809 
Suppose I have 2 bodies, M1 and M2. Assuming that no other forces are acting on them aside from gravity, what is the...

Apr1108 11:34 AM
Ulysees

3 
2,809 
I've never known this but the equation only seems to contain a conduction term so I assume it can only apply to...

Jul2111 05:49 PM
Studiot

27 
2,809 
I'm trying to derive the resonance frequencies for a simple fixedfixed beam, as opposed to a simplysupported beam.
...

Sep711 03:23 PM
Bill_K

2 
2,809 
Hello,
I have found a nice popularisation text on general relativity.
It ends with a puzzle that I like very much....

Mar2809 10:33 PM
BillClarkson

8 
2,808 
When a charge start motion it produce magnetic field.Is this cause any change in electric filed of this charge?and...

Dec209 09:02 AM
Longstreet

1 
2,807 
A damped oscillator is described by the equation m(x'') + b(x') + kx = 0, where the damping force is given by F =...

Nov2911 03:43 PM
dacruick

5 
2,807 
My textbook says the an object undergoing undamped, underdriven
harmonic motion...

Jul2504 05:22 PM
cj

5 
2,806 
Can you tell me how to find CG. point.
thank you.

Nov2109 08:48 AM
Redbelly98

8 
2,806 
I don't get how this ever came to be a law, since it seems so obviously false. Entropy in a closed system can only...

Jun2211 02:02 AM
DaleSpam

32 
2,806 
As Gokul43281 correctly pointed out to me, the dot product of two vectors is a scalar.
I looked up this page to...

Sep806 06:07 PM
WhyIsItSo

14 
2,805 
can anyone give me an example of isolated closed system?,bcoz for me there is nothing called closed system,all we can...

Jun2111 11:02 AM
DaleSpam

17 
2,804 
Could I please have help with something: If I generated hydrogen via electrolysis from water, sent it high up a long...

Jun1113 05:46 PM
russ_watters

43 
2,803 
Lets assume that vacuum empty cylinder has a spinning top. Rotational speed at circumference is V. Cylinder axis is...

Nov807 06:00 PM
ael65

7 
2,802 
I can't find the THEORETICAL definition of "strain optic coefficient" online. I googled and wiki'd enough. Can someone...

Jan1212 10:29 AM
Studiot

4 
2,802 
i have a problem to determine the repeating variable in Buckingham pi theorem.
how to determine which variable i...

Dec1309 08:16 PM
archden

0 
2,801 
Hi guys,
I need to model a ball rolling on an incline plane, and i would like to be able to calculate acceleration...

Mar2511 04:26 PM
Doc Al

21 
2,801 
Hello, I would like to know if Pascal really made the experiment of the barrel.
I have looked for in his...

Nov507 10:38 AM
hamilton333

2 
2,799 
Why don't we simply take t as x? why is it t��?
Where �� is the time constant.
If you're looking at a question...

May409 01:39 AM
dE_logics

15 
2,799 
There's a machine that uses a type of plastic material (reinforced Teflon) as a wear ring. The plastic rides on a...

Jan1306 06:58 AM
Q_Goest

4 
2,798 
Ok, first I'll mention that I'm completely new to these forms (first post) and all that jazz. Anyway, on to the...

Jan1507 09:26 PM
Gaijinja

7 
2,798 
http://www.science27.com/formel.jpg
I want to calculate the area that occurs in a curve of acceleration due to...

Sep809 11:44 AM
Hootenanny

25 
2,798 
The pressure in a pressurized water tank is measured by a multifluid manometer. The gage pressure of air in the tank...

Aug2411 11:06 PM
boyongo

0 
2,798 
Hello!
If I know the deflection (w) of a beam subjected to a point load in the middle, can I calculate the stress...

Mar1509 02:26 AM
dE_logics

5 
2,797 
When a light wave enters a medium the electric field value of the wave is smaller in the medium.
With the incident...

Jan2311 12:46 AM
Antiphon

2 
2,797 
I have a feeling someone is gonna be like "Duhhh" on this one. But I got to thinking.
I recall reading somewhere...

Jul407 10:02 AM
mgb_phys

11 
2,796 
Hi,
couldn't think of a better title, but it turns out to be rather fitting for what I'm about to describe, I...

Mar610 03:58 AM
Frame Dragger

6 
2,796 
Im having trouble with a question I have to answer, It's not so much the answer I want but im having trouble...

Mar1704 06:52 PM
jamesrc

1 
2,795 
how could one evaluate a numerical value for the entropy change of a nonperfect gas?
Also,which system has more...

May1804 09:44 AM
MiGUi

8 
2,795 
I understand the definition of an electric field as a property of space surrounding a charge, but what exactly is this...

Jan510 11:05 PM
qsa

25 
2,795 
Hello, I have read over many textbooks and websites (including posts on this forum) relating to the concept of tension...

Mar1207 07:04 PM
p3t3r1

10 
2,794 
if you open an icebox's door which is in a somewhat large,isolated space,the temperature of the space will become high...

Aug1607 02:14 PM
Pythagorean

21 
2,794 
Consider many same particles are moving randomly in a constant pressure and constant temperature box. The average...

Jan809 04:08 PM
KFC

2 
2,794 
I am haveing trouble solving a problem that should be fiarly easy. I beleive that i have all the components of the...

Nov804 11:34 AM
assman

0 
2,793 
Hello, I have a question about the following statement:
"It is well known that warm air in a cooler environment...

Jul707 07:16 PM
chroot

1 
2,793 
There is a problem in biomechanics that relates to a human runner’s gait (1) and how much power they consume. At each...

Nov2107 08:08 PM
tedjan

0 
2,793 
Hi
I've been working through some examples from the course material we use in physics class, but one thing keeps...

Dec510 02:38 PM
K^2

3 
2,793 
like centre of mass can there be a concept of centre of charge . To apply newtons laws of motion one can assume a...

Feb2806 08:42 PM
gandharva_23

4 
2,792 
um, first of all, why was my post locked? all i wanted was to know how to patent my idea.if adding this post is in...

Nov207 10:14 AM
ZapperZ

3 
2,792 