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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
46,482 
I would like someone to explain to me the correlations between these thermodynamics concepts:
1 State...

Jun1611 11:36 AM
atyy

2 
2,513 
Hello all. I have what seems to be a fairly simple problem but I need a bit of help on the reasoning and what happens...

Jun1611 11:12 AM
goobertron

3 
844 
phase diagram for x and xdot.

Jun1611 09:55 AM
timthereaper

2 
1,069 
V=\frac 1 {4\pi\epsilon_0}\int \frac {\rho(\vec r\;')}{\eta} \;d\;\tau'\;\hbox{ where }\; \vec{\eta} = \vec r  \vec...

Jun1611 01:54 AM
yungman

4 
747 
Does an ice cube have more entropy than room temp water? I would intuitively think it doesn't because its atoms are...

Jun1511 11:54 PM
jambaugh

6 
1,150 
Hi everyone, I'm studying applied dynamics for college.
I have a simple question and then a more importante...

Jun1511 07:45 PM
luis20

4 
2,327 
Estimate how many photons of visible light (500 nm) are emitted by a 100 W Bulb.
I get 2.5\times10^{20}...

Jun1511 05:49 PM
Vanadium 50

5 
776 
Hello,
I was wondering if uniform motion and uniform speed were one in the same things? Also (if they are both...

Jun1511 02:46 PM
Bashyboy

10 
2,162 
How would I go about calculating the resultant forces / torques on a system if it's previously spinning at a constant...

Jun1511 01:18 PM
eacousineau

0 
1,643 
Hi,
From what I have read, if a bulb X is connected to the input voltage of a stepup transformer, and another...

Jun1511 12:40 PM
arydberg

4 
4,170 
Dear physicists
I am a physics teacher in London. Whilst I can understand exam style questions on circular motion...

Jun1511 12:34 PM
mklein

14 
2,108 
Excuse me if this is a really ignorant question but I tried searching google but all I got was debunking...

Jun1511 11:55 AM
Mute

3 
616 
Hello everyone,
I have a project of mine where I need to find out the force that acts on a wheel to start it...

Jun1511 11:28 AM
Doc Al

7 
1,730 
I'm working on a RFSF for the University of KY. It's essentially a giant coil, where the coil is the inductor,...

Jun1511 10:52 AM
jmtome2

0 
609 
Looking for something with lots of worked examples in lagrangian mechanics. The more useful books I've already checked...

Jun1511 09:48 AM
Lavabug

0 
584 
I've been doing a lot of research on how the sum of a systems change and the environments change from point a to be...

Jun1511 08:24 AM
atyy

2 
653 
Hi best regard to all
This is my first post so forgive me in any mistakes.
If some one can explain to me those...

Jun1511 07:24 AM
CICCI_2011

5 
846 
can someone give me an example of isolated open systems ,which can allow me to understand 2nd law of...

Jun1511 03:17 AM
nouveau_riche

4 
957 
Energy and momentum only differ by a factor of V/2. So in essence, at a fundamental level, does this mean that the...

Jun1411 11:14 PM
matonski

9 
2,107 
I'm making my way through some workbooks at my job (coalfired power plant) and I've hit a stumbling block. I could...

Jun1411 09:36 PM
jbryan133

0 
2,785 
could someone told me an experiment that ı can find the dimensions of the electric charge in therms of m, kg, sec
the...

Jun1411 04:42 PM
Studiot

3 
7,913 
My classmates had an argument.
There are 2 trolleys; one of them (A) is attached to a solenoid wrapped around a...

Jun1411 02:16 PM
BruceW

9 
1,793 
Hi guys,
I have a quick q about solving questions where there are two charges q1 and q2 approaching each other (in...

Jun1411 12:59 PM
Mokha75

2 
473 
The documentary "Man on Wire" covers Philippe Petit's 1974 crossing between the WTC towers. The movie is available on...

Jun1411 11:47 AM
Bill_K

1 
1,150 
I have read that the electric and magnetic fields are always "perpendicular". Is that true? And if so, does that...

Jun1411 10:40 AM
chrisbaird

2 
703 
I notice that sometimes there may be 2 ways of getting to the answer  using energy, or "forces'. Can I always just...

Jun1411 10:24 AM
I like Serena

8 
1,647 
Hello all,
I'm currently working on some magnetic shielding, and my supervisor wants me to try and find an...

Jun1411 06:16 AM
Born2bwire

5 
942 
I'm a mechanical engineer and I'm really interested in electrical systems. I understand a fair amount about the basics...

Jun1411 05:52 AM
The_Duck

6 
2,144 
Hi everyone!
I'm new to this forum. I enjoy physics but I'm full of doubts :)
Now I'm trying to understand how...

Jun1411 05:50 AM
luis20

2 
1,449 
Hey, all.
I'm tutoring a freshman, and we've come to this particular problem, and I think there's missing data. He...

Jun1411 04:41 AM
Metaleer

3 
1,496 
if we have cylinder full of water on a scale the we heat it, does the scale show any difference in weight of...

Jun1411 03:00 AM
Lsos

2 
1,003 
Can anyone explain the mechanics of a chain hoist and its mechanical advantage, in mathematical terms,???
thank you...

Jun1411 12:20 AM
JohnMorriss

3 
1,645 
Hallo,
I hope someone can help me with the following question:
A submarine conatins 1000m^3 of air and has a...

Jun1311 08:55 PM
nasu

2 
1,489 
I'm going into my third undergraduate year and have yet to take a course on thermodynamics and statistical physics,...

Jun1311 07:53 PM
Pengwuino

3 
593 
Hello friends .. I did a physics exam last week and had many doubts on questions 1  d) e) and 2  b) c) ... I tried...

Jun1311 07:31 PM
pupiloslash

1 
933 
Hi everybody.
That's my first (of many) post here!
I'm a brazilian guy who is trying o solve de Wopho's Problems....

Jun1311 04:51 PM
nekronaut

3 
1,007 
I'm trying to understand how the polarization of an incident laser, (280.5 nm YAG in this case horizontally polarized)...

Jun1311 03:50 PM
Jimbone

0 
476 
Hello,
I need some help in a matter.
I donīt have any great knowledge in thermodynamics.
If I have a plate of...

Jun1311 12:51 PM
ladil

4 
1,136 
hi all
why do many things in physics move in waves ?
in fact , if im not mistaken , everything apart from mass...

Jun1311 11:23 AM
Studiot

37 
4,645 
What is the proof that the total rate at which radiation is emitted by a blackbody radiator is proportional to the...

Jun1311 11:19 AM
Lakshya

2 
874 