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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,708 
If we are given B, how can we find A? I can fine the magnitude of A by:
\int_{s'} \vec B \cdot d\vec{s'} = ...

Oct2011 03:33 AM
vanhees71

24 
9,730 
Say we have a simple circuit with just a battery and two capacitors. Why must the voltage of each capacitor in series...

Feb1609 10:02 PM
atyy

3 
9,718 
work done in an reversible process is easy to find we have the function of P internal bt when it comes to irreversible...

Nov108 06:52 PM
Count Iblis

3 
9,717 
Hello.
I'm having troubles solving the enthalpy for an ideal gas.
From the equation H=U+PV, i could find H...

May1510 08:41 AM
quantoshake11

2 
9,694 
Hi,
Does anyone know an equation/approximation/model or other to estimate the capacitance between two coplanar...

Jun2210 05:53 PM
marcusl

7 
9,682 
On an automotive forum, a member made a statement that compressed air won't hold as much moisture as ambient pressure...

Feb604 11:31 PM
desertwinds

4 
9,680 
There's a simple explanation that wasn't covered in the last thread about this.
Start off with an ideal...

Nov607 11:49 PM
ael65

3 
9,670 
A ball being thrown, ignoring drag or wind, has an initial height, initial velocity, and experiences the acceleration...

Jan1312 09:42 AM
nelleyao

19 
9,669 
In a Time article about global warming they say warm water expands, but water expands when it's frozen  is it both...

Jan2907 02:02 AM
thetada

10 
9,665 
Hello,
Something on my mind today...
As you keep differentiating functions that are sometimes used to represent...

Dec1311 06:04 PM
Nikarasu M

9 
9,662 
i saw the 'proof' of the wave equation for a sound wave in a medium assuming the wave equation for a dissplacement...

Nov1707 09:49 PM
pardesi

0 
9,640 
What are you able to derive or integrate from a voltage vs. time graph? Like if I have a battery and a resistor and...

Oct2109 03:15 AM
mikelepore

4 
9,624 
I seems very simple, and I'm sure I understood it before, but for some reason I suddenly started to get confused with...

Sep2208 04:07 PM
atyy

53 
9,618 
Hello,
For a reversible heat engine between temperatures T_1 and T_2, the ratio of heat going in and out the engine...

Sep2310 06:48 AM
DrDu

116 
9,604 
HI guys. im facing a problem that is quite interesting but quite complicated to explain. so would like to ask some...

Jun2008 02:29 PM
rcgldr

6 
9,597 
any good website suggested on coupled pendulum?
I have to do an investigation and I'm going to investigate simple...

Nov1703 03:33 PM
LLT

7 
9,576 
If water and vegetable oil are added to a bowl, they do not mix.
If gasoline and vegetable oil are added in another...

Dec2706 08:39 PM
Gokul43201

32 
9,542 
Energy can be neither created nor destroyed.
What is energy?. ability to do work.
what is work ? work = force x...

Jul1107 08:45 AM
Doc Al

88 
9,514 
I have found a website which claims that rubber bands obey a force law
F=kT(x\frac{1}{x^2})
x=\frac{L}{L_0} ...

Oct2604 02:50 PM
PerennialII

6 
9,504 
I am new here and have always loved the history of science as much as the science itself. I have been intrigued by...

May610 09:11 AM
James A. Putnam

113 
9,502 
When you have a cube made of any matter plastic, iron ,wood it is made of millions of atoms.
But those atoms are held...

Mar1111 10:10 AM
A. Neumaier

19 
9,500 
Hello,
I have a quick question that I imagine anyone who has studied physics or math at a university can answer...

Jan1312 06:46 AM
Claude Bile

48 
9,479 
Hi, I didn't post this question in the Homework section as it is not home work and does not seem to fit with the...

Feb2009 10:04 PM
mcvwi623

5 
9,476 
Hi, has anybody worked with heat pumps? I'm recently confused about how the heat pump compressor operates. Does it...

Jan2111 01:22 AM
ikhlaq

5 
9,473 
From experiment, it's easy to see that if we balance an industrial sized broom with one finger at it's center of...

Jan407 06:14 PM
PhysMaster

7 
9,470 
Permanent magnets are advertised as having some scalar strength, say, 1.5 Teslas, depending on the composition of the...

Mar1809 08:34 AM
clem

5 
9,446 
I have recently taken an interest in the idea that all pendulums of the same length are isochronous, and am currently...

May2407 09:30 PM
StatMechGuy

3 
9,443 
F=ma
How do we define m and F? If their definition both come from this equation, then the equation doesn't really...

Oct1909 12:29 AM
Martin

31 
9,421 
This question came some time back in Stony Brooks exam. I have the solution also. But i am having some conceptual...

Mar3108 03:02 PM
zarbanx

2 
9,420 
Hi! I really want to make a difference in my school's science fair on january.. Usually, the interactive projects are...

Oct1004 07:05 PM
Claude Bile

2 
9,418 
Mass on a string undergoing uniform circular motion by hand:
I was taught that the centripetal force F = mV^2/R is...

Feb510 01:27 AM
rcgldr

7 
9,414 
In space if a space craft in the absence of a gravitational field stopped using whatever propulsion system it was...

Jun1910 11:51 AM
DaveC426913

10 
9,411 
I have just returned from a holiday in turkey, and the resort we stayed at had a water slide that ran into the pool....

Apr912 02:39 PM
willem2

19 
9,407 
Is the amount of energy needed to raise the temperature of a substance linear or not? For instance, would it take the...

Jan1004 02:38 AM
Bystander

13 
9,382 
Hi
I have a hard time understanding what the curl really means in Maxwell's equations, for example in a steadystate...

Mar606 05:41 AM
dextercioby

10 
9,380 
I've attached a diagram of a bar magnet being plunged into a solenoid.
I'd like someone to explain the direction of...

Jan2312 08:08 AM
mishi003

7 
9,378 
Hi,
From knowing that the 3D harmonic oscillator has 3 degrees of freedom, how do you conclude that the average total...

Sep2909 07:43 AM
conway

15 
9,374 
Could someone explain me in detail the differences between an inertial reference frame and a noninertial reference...

Jan1605 07:32 AM
marlon

3 
9,373 
Hi!
Great website I just wished I had discovered it earlier. :smile:
Here is my simple question and I would...

Dec2309 05:38 AM
AzeemA

6 
9,370 
While I understand the use of the Lagrangian in Hamilton's principle, I have the gut feeling that there is more to it...

Sep2904 10:12 AM
alexepascual

43 
9,351 