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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,711 
Hi all
Another thought I have been pondering is why don't I weigh significantly more at the poles than I do at the...

Jul2407 03:29 PM
laurelelizabeth

66 
12,264 
I'm going through The Feynman Lectures On Physics. I've taken a few classical physics classes before, however...

Jul2407 02:26 PM
amolv06

4 
4,535 
I just came across Earnshaw's Theorem which states:
A charged particle cannot be held in stable equilibrium by...

Jul2407 12:28 PM
LHarriger

7 
1,547 
(this is for a hobby, not homework)
I fully understand the drag equation and can work it forwards and backwards....

Jul2407 11:17 AM
Diresu

17 
1,619 
When an aircraft begins to nose up the effects of gravity begin to slow its velocity.
By dividing 100% by 90...

Jul2407 11:16 AM
Diresu

7 
2,330 
In the principle of least action, why does it make sense that L = T V where you subtract the potential energy from...

Jul2307 09:36 PM
ehrenfest

0 
1,472 
I was wondering how the time period of a double pendulum depends on the mass of the intermediate object and its...

Jul2307 02:40 PM
mgb_phys

1 
3,655 
given the Newton equation of a conservative system
m \ddot x = Gra(V(x)) (1)
my question is if we can find a...

Jul2307 01:50 PM
Klaus_Hoffmann

0 
1,324 
Hello,
I am currently studying electrostatics and for the moment we are taking as axioms the facts that there are...

Jul2307 12:15 AM
arivero

11 
29,718 
According to my physics textbook: Workdone=force x distance moved by object in the direction of the force. This is...

Jul2107 04:16 PM
alvaros

12 
7,358 
I have a basic question regarding black body cooling. Suppose a person at sea level on a clear night, were to use a...

Jul2007 08:33 PM
mgb_phys

8 
2,298 
Hi,
I've been trying to figure out a formula which describes the relation between the area, load and negative psig...

Jul2007 12:29 PM
deimors

2 
1,343 
These are the topic areas covered in the notes for this article: The Concept of Energy, Work and Power, Potential...

Jul2007 11:54 AM
Phantym

4 
1,890 
I am a little bit confused as to what boil off is, I can only assume it is the loss of gas but it is still unclear to...

Jul2007 11:11 AM
Q_Goest

13 
4,188 
I think I understand this concept but wanted to get other opinions. My son and I are Taekwondo Black Belts and have to...

Jul1907 04:25 PM
mgb_phys

5 
1,843 
hi, guys:
I am reading some notes of Electromagnetism. It claims that for a helix solenoid with N turns of...

Jul1907 07:41 AM
walkinginwater

4 
3,794 
DISCLAIMER: i may very well have exactly zero idea what i'm talking about. please feel free to berate me if i am way...

Jul1807 08:22 PM
BobG

5 
4,535 
1. IF there are two objects, one is heavier, the other is lighter. Now someone drops them both from the top of a...

Jul1807 03:29 PM
daniel_i_l

27 
2,370 
Can anybody explain how the momentum is conserved in the case of a rubber ball (bounced back),when it was throwned to...

Jul1807 07:07 AM
ank_gl

28 
13,102 
Hello everybody, this is my first thread. The point is i need the book An Introduction to mechanics by Daniel...

Jul1707 10:26 PM
cesiumfrog

1 
1,180 
Is a fully charged battery heavier than a discharged one? Would any difference in weight be measurable using ordinary...

Jul1707 08:41 PM
starkind

10 
1,552 
hello all!
If there is a circuit with only one heating element, how do we calculate the power it requires?
...

Jul1707 07:30 PM
russ_watters

22 
16,298 
Say I have two bodies, idealized as points with mass, in Galilean spacetime A^4. When thinking about the 2body...

Jul1707 04:14 PM
cliowa

8 
1,396 
Ok, So if i calculate the torque on an object, how do i then find out the rate at which that object turns?

Jul1607 07:35 PM
rcgldr

5 
5,049 
I found a site about this book on metaphysics or something, and the author tried to give some examples of where...

Jul1607 04:04 PM
Danger

9 
4,590 
That was discussed before but the thread died inconclusively.
Anybody knows of necessary or sufficient conditions...

Jul1607 02:25 PM
smallphi

40 
3,873 
Hey, I'm working on programming a Newtonian mechanics engine (not as part of coursework, btw, for a game that I'm...

Jul1607 08:30 AM
GoldPheonix

5 
3,762 
While I think I have somewhat an understanding of Entropy. (A measurement of a given state by its tendency proceed to...

Jul1607 06:59 AM
pkleinod

5 
13,169 
please lock thread. thank you.

Jul1507 12:59 PM
beramodk

0 
1,568 
Consider a laminar, initially horizontal stream of liquid with circular cross section, flowing through a vacuum. How...

Jul1407 02:23 AM
Loren Booda

0 
1,467 
I'm taking an introductory college physics course as part of my premed coursework, but unlike most premeds I...

Jul1307 06:59 PM
ranger

9 
4,002 
I've been reading about the abstract formulation of dynamics in terms of symplectic manifolds, and it's amazing how...

Jul1307 04:50 PM
StatusX

2 
1,348 
Consider please a conducting wire located in a plane electromagnetic wave propagating in the positive direction of the...

Jul1307 12:58 PM
bernhard.rothenstein

2 
1,556 
well i saw a proof and therea re hundreds of them where conservation of angular momentum is used to solve the...

Jul1307 11:00 AM
pardesi

19 
3,708 
I visited a coal power plant on the weekend, and was quite impressed by the scale and enormity of the operation. 10...

Jul1307 01:30 AM
parsec

2 
1,570 
Hi all,
This has been bugging me all day, so I thought I'd seek the help and advice of the internet.
When a...

Jul1207 11:37 PM
parsec

10 
1,599 
I am not so clear about the definition of 'free fall'. If an object is an example of free fall, then must its...

Jul1207 06:01 PM
Danger

11 
2,736 
Our air motor has 2 cylinders and is a low rpm device. It therefore
needs a flywheel to store enough torque to get...

Jul1207 02:28 PM
mgb_phys

3 
1,696 
HI.... i wanted to do an extensive project on electricity and i thought of something. When i take a normal conduucting...

Jul1207 11:39 AM
berkeman

3 
2,435 
Hello there
I'm currently working on an EM device that should be able to measure the humidity in the ground. I...

Jul1207 09:12 AM
LorDjidane

1 
2,943 