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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
45,886 
It is said that if a force depends only on distance (And not on time), the equations that involve those forces are...

Aug609 05:26 AM
Jano L.

1 
953 
I am looking for a relation between electromagnet (or permanent magnet) and frequency.For example what is the...

Aug609 03:27 AM
vin300

3 
831 
Hi friends,
long time ago I noticed the following interesting similarity between
classical mechanics and...

Aug509 03:53 PM
Jano L.

0 
847 
Suppose you're driving along a straight, smooth, level stretch of highway with a constant velocity v. There is a cup...

Aug509 02:46 PM
jpreed

1 
623 
i am so confused.. does anybody know a good source to learn physics? every single source (book, website, etc.) says...

Aug509 02:25 PM
Mad_Eye

10 
1,970 
Hello, I got another inquiry about work. Supposing an external agent gives potential energy to an object by pulling it...

Aug509 12:19 PM
rcgldr

8 
815 
Why is the normal reaction to a rolling object shown to the side of the CM?
Forces must be equal and opposite
Is...

Aug509 12:05 PM
rcgldr

6 
1,060 
I understand that light propagates as a transverse wave  does this mean that the momentum carried by a photon is...

Aug509 11:28 AM
Bob S

2 
1,123 
I'm new to these equations but let's see if I have the talk down.
1. The electric field surrounding a charge will...

Aug509 10:57 AM
Born2bwire

18 
1,574 
Can a generic, not necessarily harmonic, signal of time be represented as a complex signal with a real and imaginary...

Aug409 11:50 AM
jasonRF

4 
3,127 
Suppose some vehicle with mass m is moving down a hill with angle \theta . Say that the vehicle is exerting a...

Aug409 10:27 AM
sganesh88

20 
3,853 
What is the actual definition of the TM mode? A typical definition that I've come across is that there is no Magnetic...

Aug309 10:15 PM
Born2bwire

2 
2,351 
I've been thinking about this problem today. I tried reasoning my way through it and I haven't been able to. I might...

Aug309 05:45 PM
J Goodrich

2 
580 
can circular magnetic fields accelerate charged particles linearly?
is their any method to make a powerful circular...

Aug309 05:43 PM
Bob S

22 
2,484 
Recently, there was a thread on Reddit titled "The year is 2035. We have a permanent base on the moon and have sent...

Aug309 01:48 PM
ZapperZ

14 
1,290 
I understand the the specific heat capacity of a material is a function of temperature.
Does anyone know of either...

Aug309 07:51 AM
lalbatros

2 
1,046 
how to calculate the amount of voltage, current and power that two junctions can produce with seebeck effect when the...

Aug309 06:54 AM
aravindnaga

0 
1,007 
Hi,
I have been trying to model the temperature distribution along the length of a fin.
With a constant 'h',...

Aug209 09:41 PM
Karthiksrao

2 
651 
Hello, this is my first post, i hope somebody can help me.
I have searched for the answer myself all over on the web...

Aug209 08:54 PM
Q_Goest

5 
4,338 
hi all,
i think this should be simple but i just cant figuring it out
i basically want to move a particle at...

Aug209 05:51 PM
rcgldr

8 
1,391 
Hello, I've been going over work and energy transfer for some upcoming tests, and I got the following question:
...

Aug209 07:29 AM
Perrin

2 
559 
If you have just one point charge of 1 Coulomb in the entire universe, and you look at the magnetic field at a foot...

Aug109 12:11 AM
rockyshephear

15 
1,119 
Why is it that kinetic energy is conserved  for example during collisions?
Or can one prove in general that for
...

Jul3109 02:10 PM
Dadface

32 
5,206 
Can anyone explain why it's important to be able to take vectors in an x,y,z coordinate system and be able to...

Jul3109 08:15 AM
jtbell

15 
1,203 
Imagine the following conductive structure built outside:
A
...

Jul3109 06:54 AM
Borg

12 
5,078 
Another way of stating it is
the sum of the dot products of vectors B and vectors A = 0
Is this because the dot...

Jul3009 06:52 PM
Phrak

26 
2,525 
I don't want to hijack another thread, so I'm moving the discussion here....
A point about Archimedes Death Ray...

Jul3009 03:41 PM
Andy Resnick

14 
2,245 
Read this.
Electric flux is a measure of the number of electric field lines passing through an area. To calculate...

Jul2909 08:27 PM
rockyshephear

37 
3,138 
I would like to build an electric load simulator for testing purposes along the lines of this link:
...

Jul2909 04:35 PM
Bob S

2 
2,991 
According to Landau textbook:
Having two inertial frames K and K' moving with velocities \vec{v} and...

Jul2909 12:15 PM
Rebel

3 
1,240 
This past weekend  Sunday, July 26th to be precise  Ferrari Formula 1 driver Felipe Massa suffered a HORRIBLE head /...

Jul2909 12:10 PM
mgb_phys

3 
1,096 
http://philosophy.ucsd.edu/faculty/ccallender/index_files/Phil%20146/a%20beautiful%20supertask.pdf
It seems to me...

Jul2909 08:47 AM
buffordboy23

3 
771 
I've been reading some E&M text and came across an interesting electrostatic problem that went something like "find...

Jul2909 06:42 AM
lalbatros

15 
1,614 
Hi,
Problem Statement:
A flywheel with Moment of Inertia I, and rpm w1 is rotating. It has a shaft at is center...

Jul2909 06:36 AM
tinytim

1 
2,033 
I would like to put this out for argument that there is no such thing as magnetic flux density. Since magnetism is a...

Jul2909 04:14 AM
A.T.

13 
1,121 
Greetings,
The other day while working on my car I began thinking about solenoids and how they work, but I think I...

Jul2909 01:49 AM
jfowle

0 
751 
So given the common explanation here for Del dot B equals 0 to be "There are no magnetic monopoles.", since the title...

Jul2909 01:25 AM
rockyshephear

24 
4,069 
You know how metal shavings form bows of flux lines. How is this possible since there are no discrete flux lines. I...

Jul2909 01:13 AM
rockyshephear

2 
737 
I've been told over and over its the amount of something entering a given surface. But the amount of what? Twinkies,...

Jul2909 12:50 AM
rockyshephear

4 
710 
Hi all, can a laser light be magnified by means of a magnifying glass?

Jul2809 06:58 PM
russ_watters

14 
1,439 