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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 47,852
First off I would like to say that this is not a homework question. I am trying to calculate the temperature of a...
Apr25-08 09:33 AM
Mapes
2 3,701
In reading Feynman's "Lectures on Physics", volume 2 I have a question and have included a scan of a small section...
Apr25-08 08:26 AM
Thomas2054
4 1,784
Hi, I am doing simulations on a particle in some potential together with a fluctuating force and friction. To do...
Apr25-08 01:57 AM
shad0w2000
0 1,291
Hello I really want to know what the advantages and disadvantages of optical pyrometers are? Thanks a lot
Apr24-08 08:15 PM
Redbelly98
2 3,664
Hello hello, I cannot for the life of me wrap my head around the idea of a boundary condition. I...
Apr24-08 07:06 PM
Lojzek
3 3,123
Suppose that I have an aluminum cube with side lengths 10 cm. Suppose that I uniformly and continuously apply a...
Apr24-08 05:26 PM
GT1
14 3,215
hi! Actually am learning Lenz's law but am just getting confused.i know that the change of a magnetic field around a...
Apr24-08 05:08 PM
mikelepore
4 1,754
Recently I was helping a friend of mine nail sheets of felt on a roof, and we finished applying the felt in the...
Apr23-08 11:42 PM
Phrak
18 6,249
hello In a textbook it is stated that if a piston of a gas syringe is used to compress the gas inside. Its Potential...
Apr23-08 06:51 AM
ay2k
4 1,928
I am looking for educational derivation( or any available and detailed) of the key principle of statistical...
Apr23-08 01:28 AM
bilha nissenson
12 2,493
A conducting ball of radius R and total charge Q is placed in a homogenous electric field E. Find the potential V...
Apr22-08 03:33 PM
pam
2 1,090
Hello. When a capacitor is connected in a circuit with an ac supply, a current flows in the circuit. fine. The...
Apr22-08 02:07 PM
ay2k
9 15,589
Hello, I have a question about how balls react on collision while having diffrent mass, lets say two balls are...
Apr21-08 02:30 AM
Shooting Star
5 1,623
As water is pulled into an opening by gravity, it begins to spin. Why does it spin?
Apr21-08 01:34 AM
kamerling
34 9,625
i cant figure this out. In an RC circuit, why is the maximum voltage of a capactior greater then the maximum voltage...
Apr20-08 03:36 PM
kamerling
1 928
suppose you have a solenoid with hollow core connected to a galvanometer. On one side you have a S-N magnet (ie....
Apr20-08 04:59 AM
genneth
3 1,657
is it possible to continuously change the acceleration of light?
Apr20-08 02:52 AM
rcgldr
11 1,582
Hi! I am studying the diffusion of CO2, can anyone tell me the value (or/and any references) of the diffusion...
Apr20-08 12:23 AM
Crazy Tosser
1 4,101
Why is it that on a hot day, you can see a cars reflection on the road. What is this called?
Apr19-08 03:51 PM
Danger
2 3,175
Does anyone know where I can find a derivation how/why a light beam disperses? I'd like to see some sort of solution...
Apr19-08 06:18 AM
pinestone
6 4,872
Many things have an infinite source of energy, where it isn't CONVERTED from other forms of energy, nor mass. Namely,...
Apr18-08 06:07 PM
pmb_phy
43 5,421
I was thinking about newtons law and come across something interesting. F=ma=GMm/r^2 therefore a=GM/r^2. This is...
Apr18-08 08:52 AM
DavidWhitbeck
10 1,948
"The number of magnetic lines of force passing through any area in a magnetic is known as magnetic flux" So the...
Apr18-08 05:41 AM
Shooting Star
9 11,518
Hi all Not sure if I posted in the right spot but my question is in regards to optics and projection. To make a...
Apr17-08 09:28 PM
rotor_hed80
6 1,530
How to calculate the rotationals and torque forces on a hydraulic cyclinder, which is on a 14" arm welded to a 3" o.d....
Apr17-08 03:57 PM
Windseaker
0 1,149
I was doing an experiment to determine the capacitance of a capacitor in a circuit with a particular resistor R. This...
Apr17-08 10:55 AM
Redbelly98
10 3,154
How can I calculate potential enegry? I have a interpretation about it, we should use the work that the string...
Apr17-08 10:42 AM
Redbelly98
1 6,592
I have a problem in trying to express a net force equation for a falling elastic object when collision ensues. For...
Apr17-08 03:37 AM
benabean
1 4,584
scenario: If any generator ultimately 'pushes' current (free surface electrons) down a wire, moving trillions of...
Apr16-08 07:23 PM
russ_watters
6 1,923
y for all real vertical throw, the time taken to reach max height must b shorter than time taken to return to starting...
Apr16-08 07:12 PM
indr0008
10 5,113
Hello, I have a potential function given numerically at points evenly spaced. That is to say, I have the numerical...
Apr16-08 02:41 PM
hattori
0 1,174
I found this problem in the book Resnick and Halliday many years ago (1992) and I had it in my mind until 2005 or so...
Apr16-08 11:57 AM
Barfolumu
9 1,505
Wel, this is just crazy. I've noticed something weird about spinning tops. Most of them start loosing speed, then,...
Apr16-08 11:34 AM
wysard
5 1,998
Hi, I'm a grad student in computer engineering and my research involves a fair amout of mechanics (forward/inverse...
Apr15-08 04:48 PM
D H
17 3,088
Why is it that if an orbiting space station is observed to remain always vertically above the same point on Earth then...
Apr15-08 08:35 AM
D H
6 1,781
Say you had a circuit with a battery and a loop of wire somewhere in the middle of the circuit. The loop of wire is...
Apr15-08 06:46 AM
Redbelly98
4 6,687
What is cause of capacitor breakdown? When we combine different capacitors in series and parallel combination, how...
Apr15-08 12:59 AM
Phrak
4 7,024
I am a physics student just finishing my sophomore year, and i was looking into what i could expect in upcoming...
Apr15-08 12:28 AM
Marthius
3 1,354
Is there such a thing in electrical circuits, or anywhere else? Or is this just considered reverse polarity, or 0V?
Apr14-08 11:01 PM
nuby
9 2,392
Ok, dumb question, I know. But it's been bugging me, and I can't find a straight answer anywhere, so here it goes: ...
Apr14-08 10:11 PM
Usaf Moji
2 1,259

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