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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 46,911
hi, I'm simulating a system of molecules (water) and in order to pass through a barrier they have to overcome an...
Mar31-12 02:08 AM
K^2
2 1,147
Hi! I'm having some trouble with optics. When we have convex, planoconvex, concave, planoconcave, and meniscus...
Mar30-12 11:09 PM
chitturp
2 1,971
There's a circuit with voltage source V resistance R and current i. One section of the circuit has a conductive...
Mar30-12 08:09 PM
papernuke
4 851
Does anyone know a good website or other source for practicing conversions and really just units in general? I'm...
Mar30-12 07:56 PM
K^2
2 1,005
I'm trying to calculate the maximum volume of Helium gas that can be ionized into plasma if I apply a power of 1 watt,...
Mar30-12 07:53 PM
CognitiveNet
0 1,199
An object floats if it is less dense than water. I'm assuming that an aircraft carrier can float because there are...
Mar30-12 05:22 PM
Drakkith
3 1,513
If a permanent magnet is moved in a direction at right angles to the magnet field lines in the magnet, is an emf...
Mar30-12 04:40 PM
MS La Moreaux
8 1,019
If we place an infinite conducting sheet in free space, and fix its potential to \varphi_0, how do we solve solve for...
Mar30-12 03:40 PM
chrisbaird
1 946
Hi, I'm new to the forums, and I have a question. Here's the scenario: Let's say I have a circuit in a vacuum...
Mar30-12 03:29 PM
chrisbaird
1 875
So Polarization of light has always really bugged me. Linear polarization is simple. I understand Elliptical and...
Mar30-12 03:03 PM
chrisbaird
2 1,496
what does more damage an object w/ a high acceleration or a greater momentum i was watching one of my favorite tv...
Mar30-12 02:04 PM
mrneuro
4 804
Q1-if i apply a force on an object that object moves with acceleration does it mean object becomes like a force f=ma ?...
Mar30-12 01:22 PM
mr newtein
2 601
Hello. I want to help a friend solve a problem. I'm having trouble finding the right way to solve for distance for...
Mar30-12 01:00 PM
chrisbaird
1 855
Hi, I have a problem which I can't figure out.:confused: Let us take a sphere which is rolling purely at a...
Mar30-12 10:56 AM
nerdvana101
3 780
Why isn't the influence of air pressure assimilated in Archimedes law? If an obect is more dense than the fluid, it...
Mar30-12 06:06 AM
HWGXX7
8 1,911
Hello experts! Higher the emf of the battery implies that the higher the drift speed of the electrons or increase...
Mar30-12 04:46 AM
shayaan_musta
8 1,269
HI, I am having some trouble understanding the effects of an impulse on rolling motion, particularly without...
Mar30-12 01:30 AM
nerdvana101
5 1,042
How can I calculate how much heat a resistance wire gives off when I energize it? For example, I have calculated the...
Mar29-12 08:59 PM
privitmj
4 1,717
Im trying to calculate how hot the gas inside my exhaust pipe is. I have several numbers and a calculation on how to...
Mar29-12 05:37 PM
Tweaked9107
0 635
For an infinite current sheet whose current has always been on, it is well known that a purely magnetic field exists...
Mar29-12 04:00 PM
chickpea
11 2,391
Whats more basic - newtons third law or conservation of momentum You can prove newtons third law by conservation of...
Mar29-12 02:46 PM
DaleSpam
4 1,235
First, to make sure i have this right, lagrangian mechanics, when describing a dynamic system, is the time derivative...
Mar29-12 01:13 PM
Supfresh
2 664
Could someone provide me with a link or source which i can cite for the values of the hall coefficients of tungsten...
Mar29-12 08:42 AM
Liquidxlax
2 1,853
Can anyone tell me the definition of a "Nyquist" with respect to units of frequency? I didn't find it defined on the...
Mar29-12 08:34 AM
AlephZero
3 889
I just took a physics test today and there was one problem that I cannot figure out if I did correctly. The problem...
Mar29-12 05:16 AM
K^2
5 1,701
So I have been thinking about what it would mean to have a high temperature. This means the the change in entropy per...
Mar29-12 03:34 AM
paddysmith
14 1,798
When riding a motorbike, at relatively high speeds the handle becomes harder to turn. Is this due to the conservation...
Mar28-12 10:57 PM
jim hardy
18 2,295
Why is it harder to hammer in a nail the deeper it gets? Classical physics says F k or s = μ k or s N the...
Mar28-12 01:30 PM
Philip Wood
4 1,017
I'm not sure that I understand the equipartition theorem intuitively. In general the thermal energy for a body is: ...
Mar28-12 08:54 AM
Khashishi
3 1,060
Currently we are designing a thermal storage unit to be used in conjunction with a heat pump system. See attachment...
Mar28-12 05:46 AM
mzc07
0 1,935
I just realized that given a hamiltonian H, the set generated by its canonical transformations under composition just...
Mar28-12 05:13 AM
espen180
0 645
I have a discussion about shielding of noise generated by appliance and florescent lights. I know both Al and Cu are...
Mar27-12 10:57 PM
marcusl
7 4,540
Dear Forum, let's consider a certain load. The load has its own internal structure (resistors, capacitors, etc...)....
Mar27-12 10:25 PM
fisico30
4 1,451
If two masses, m and 2m, are separated by a distance r, what is the potential energy of mass m? What is the potential...
Mar27-12 07:15 PM
K^2
8 1,288
A billiard ball is cued by striking it horizontally at a distance d=10mm above the center of the ball. The ball has...
Mar27-12 05:47 PM
berkeman
2 957
Suppose we have an electron orbiting a nucleus,in an anti-clockwise direction, in a magnetic field, with field lines...
Mar27-12 02:29 PM
Bob S
10 2,144
What occurs if a higher velocity, denser plasma plowed through a less dense plasma traveling at a lower, but parallel...
Mar27-12 01:43 PM
chrisbaird
7 1,664
Can somebody explain how night vision and/or a black light work? I know it does something where it enhances dark...
Mar27-12 01:20 PM
Drakkith
2 1,213
Why do gyrascopes or things moving in a stright line not fall over. Probably a simple answer but i cannot work it out.
Mar27-12 12:52 PM
Bob S
6 1,028
Is conservation of momentum a fundamental thing? For example :- conservation of energy is basic, its fundamental, it...
Mar27-12 11:09 AM
Khashishi
1 849

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