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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 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...
Aug6-09 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...
Aug6-09 03:27 AM
vin300
3 831
Hi friends, long time ago I noticed the following interesting similarity between classical mechanics and...
Aug5-09 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...
Aug5-09 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...
Aug5-09 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...
Aug5-09 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...
Aug5-09 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...
Aug5-09 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...
Aug5-09 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...
Aug4-09 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...
Aug4-09 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...
Aug3-09 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...
Aug3-09 05:45 PM
J Goodrich
2 580
can circular magnetic fields accelerate charged particles linearly? is their any method to make a powerful circular...
Aug3-09 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...
Aug3-09 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...
Aug3-09 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...
Aug3-09 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',...
Aug2-09 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...
Aug2-09 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...
Aug2-09 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: ...
Aug2-09 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...
Aug1-09 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 ...
Jul31-09 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...
Jul31-09 08:15 AM
jtbell
15 1,203
Imagine the following conductive structure built outside: A ...
Jul31-09 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...
Jul30-09 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...
Jul30-09 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...
Jul29-09 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: ...
Jul29-09 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...
Jul29-09 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 /...
Jul29-09 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...
Jul29-09 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...
Jul29-09 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...
Jul29-09 06:36 AM
tiny-tim
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...
Jul29-09 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...
Jul29-09 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...
Jul29-09 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...
Jul29-09 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,...
Jul29-09 12:50 AM
rockyshephear
4 710
Hi all, can a laser light be magnified by means of a magnifying glass?
Jul28-09 06:58 PM
russ_watters
14 1,439

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