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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,796 
From what I gathered in Heat transfer, an object in space, ie space shuttle, can only lose cabin heat through the...

Aug707 07:32 PM
bdrosd

2 
2,020 
I got my information on speeds of sound through various materials from this page:...

Aug707 02:29 PM
mgb_phys

1 
2,095 
I remember the discussion of resonance from physics class a long time ago because of the illustration of the collapse...

Aug707 02:22 PM
mgb_phys

1 
5,220 
Given the Hamiltonian of a system \mathcal H , could we obtain the curves solution to Hamilton equations X(t) Y(t)...

Aug707 01:55 PM
Klaus_Hoffmann

0 
974 
Hello.
First off, I'd like to mention that I'm new to this website, and I apologize if my question is in the wrong...

Aug707 04:07 AM
AlephZero

6 
1,496 
Hey guys,
I know how to do torque and forces for an object in equilibrium...but how do I know whether a torque is...

Aug607 06:07 AM
da_willem

1 
11,943 
Why do we accept newtons laws?
For every action, there is an equal and opposite reaction. why?
An object in motion...

Aug507 03:01 PM
alvaros

9 
1,582 
how does one prove this
if a system is rotating about three different perpendicular axes then
total kinetic energy...

Aug507 07:31 AM
olgranpappy

5 
1,579 
what really happens in the secondary refraction of light in a rainbow when it occurs ?
Do red and violet stil refract...

Aug507 06:14 AM
Doc Al

3 
1,264 
I'm reading a book (intro to, by Davidson) about MHD now, but found I'm a bit rusty on tensors and curvilinear...

Aug507 05:54 AM
da_willem

1 
2,830 
I was trying to figure this out on my own, probably more a trig question then math though. It''s been a few years...

Aug507 12:09 AM
steadierfooting

1 
1,305 
In my "living room lab", I have observed that oblique collisions between a moving handheld pingpong paddle and a...

Aug407 11:02 PM
Thomas12357

4 
2,351 
when we say that in pure rolling the speed of the point of contact is 0 do we really mean it's just absolutely 0 or is...

Aug407 08:48 AM
pardesi

14 
3,198 
we know
kinetic energy of a system from a certain frame of refrence is the sum of kinetic energy in the c.m framee...

Aug407 03:49 AM
jostpuur

3 
1,492 
One of my professors sent me an article on quantum optics in ultra thin semiconductors. In various graphs and text,...

Aug307 08:36 PM
kanzure

1 
2,880 
can someone tell me why this is true
\vec{F}=T(\frac{dy(x+\Delta x)}{dx}\frac{dy(x)}{dx})\cong...

Aug307 05:27 PM
ice109

7 
1,864 
Hi everyone,
I'm already familiar with, and have used Lagrangians and EulerLagrange equations. I'm interested in...

Aug307 11:54 AM
torstum

4 
2,485 
I would like to ask anybody who can help me to find some notes on the Carnot Cycle and the 2nd law of thermodynamics....

Aug307 07:12 AM
russ_watters

1 
3,405 
consider the plates ofa capacitor suppose u just have two capacitors connected in series then consider the two plates...

Aug107 11:17 PM
meopemuk

10 
2,172 
Does any of you have an idea of how to model the behavior of a bouncing ball with STELLA (ISEE Systems)? I have only...

Aug107 09:38 PM
topito2

1 
1,894 
If I'm a small particle in a liquid in temperature T, molecules from every direction collide in me f times per second,...

Aug107 04:00 PM
Ahmes

2 
3,405 
hi,
We see theoretical discussion of Electric field inside the charged capacitor is confined in the space...

Aug107 09:38 AM
jtbell

1 
1,593 
I have a question regarding the conservation of energy. If I were to push a medium sized box across a surface, I would...

Aug107 05:40 AM
russ_watters

4 
1,094 
I'm trying to model (purely for my own edification) the behavior of a rocket (specifically w.r.t. significant mass...

Jul3107 10:56 AM
rwalrus

0 
1,172 
Consider a two particle system:
 photon  massive particle 
 photon...

Jul3007 07:29 AM
cesiumfrog

6 
2,547 
A little or maybe its a lot, HELP! How do I go about getting the info to design a "cannon" probably black powder to...

Jul2907 12:06 AM
groundtester

12 
2,030 
see the file
the think that i don't understand is hoe to start studying the movement of multiple atom or spacial...

Jul2807 06:14 PM
hagopbul

0 
806 
I'm trying to write a small rigidbody physics program. I already have the linear forces part done, using Euler's...

Jul2707 11:03 AM
D H

1 
10,337 
I've read from several sources that says the inverse square law doesn't apply to lasers, but I've been told that it...

Jul2607 11:43 PM
cesiumfrog

13 
2,610 
my physics teacher told me that: 'for an object placed at the surface of the earth, the gravtitional force must be...

Jul2607 03:20 PM
country boy

12 
2,540 
is there a converse of uniqueness theorem for circuits have for charged conductors.
or atleast is there such a...

Jul2607 04:10 AM
pardesi

10 
2,067 
given any wave equation (linear or not) could we always find a solution.
\Psi (x,t)= f(xct)
is this the...

Jul2507 11:57 PM
olgranpappy

7 
1,831 
given an arbitrary circuit when can u say that a given capacitor of course in the circuit has been fully charged

Jul2507 04:14 AM
pardesi

23 
3,116 
I feel sort of confused with some concepts. Does Gravity mean gravitational force? Is that every object has different...

Jul2407 11:59 PM
SpitfireAce

21 
5,454 
I know mostly that a rocket has acceleration when it is being launched, but does it still keep acceleration when it...

Jul2407 09:38 PM
Cyrus

6 
1,096 
What's the definition of "vector components"? I mean that when I resolve a vector into two components, my teacher...

Jul2407 06:32 PM
Doc Al

2 
12,111 
hello all,
I recently saw a poster for a competition, the idea is that you get a teddy bear and attach a parachute to...

Jul2407 04:22 PM
Danger

5 
3,017 
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 
12,280 
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 
4,544 
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 
1,556 