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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
1 47,661 So, I've modeled the interaction between two...
Mar11-12 11:17 PM
0 716
There is a saying that two kind of waves are generated when an explosion happens. one moves slow which can carry the...
Mar12-12 02:11 AM
1 1,090
Why do we always talk about the Carnot cycle as being the most efficient, ideal engine? Doesn't the same equation hold...
Mar12-12 05:58 AM
0 655
I just read that Centrifugal Force is a false force. It does not exist. Inertia (which is not a force) is mistakenly...
Mar12-12 05:59 AM
2 953
Where did the concept and equation of work come from? It was introduced in Physics 1 with absolutely no background or...
Mar12-12 06:04 AM
17 2,089
If i have a shaft & i'm applying a driving torque D at one end & at other end there is resisting torque R due to...
Mar12-12 07:54 AM
5 1,544
hello! we got this experiment, R1= 46.8 R2= 46.8 R3= 148.9 R4= 147.7 R5= 217 RT= 71.1 as we can see, r1...
Mar12-12 10:16 AM
2 684
Disclosure: I am studying biochemistry so my thermodynamics education is lacking and I'm likely misinterpreting some...
Mar12-12 12:42 PM
Andrew Mason
5 1,961
Hello! My book here states that for a medium where the index of refraction n increases with increasing frequency (or...
Mar12-12 01:11 PM
5 2,198
This is a thought experiment I, erm, thought of. Imagine a cylindrical (upright) office building with a central...
Mar12-12 03:19 PM
3 1,097
I get the proof with the velocity as a function of time graphic. I don't get why that is... E.G. Why does...
Mar12-12 03:25 PM
Ken G
3 1,123
I often hear about collisions in terms of impact force. For instance, "the boxer delivered a punch with 100 lbs of...
Mar12-12 03:30 PM
1 1,223
I guess my tittle is self explanatory, but I see energy's concept of relativity not of "ability to do anything". if...
Mar12-12 04:35 PM
3 1,849
What exactly is the radius of curvature of an object? And how would this be applied to a question such as the...
Mar12-12 04:49 PM
1 721
I'm having some trouble understanding this concept. Why is it that you sometimes can get heat for free from the...
Mar12-12 05:31 PM
0 999
I am trying to find a servo or stepper motor that is powerful enough to rotate a Tippmann A5 paintball when it is...
Mar12-12 06:44 PM
0 768
Hi everyone, From what I understand if you had a time varying magnetic field inside a dielectric it will induce a...
Mar13-12 07:18 AM
1 1,070
i m little confusd in (finding the shortest distance b/w two points is a straight line in three dimensions)i have...
Mar13-12 08:52 AM
10 1,227
Hello, Thanks in advance for helping me with my question! I'm so excited to find this physics forum of such...
Mar13-12 11:39 AM
jim hardy
7 3,837
I have a friend who insists in an idea and I want to prove to him that it cannot work because it would violate basic...
Mar13-12 12:35 PM
2 1,109
Two waves are perfectly superposed (traveling same direction), but are 90 degrees out of phase. Does this result in...
Mar13-12 12:58 PM
6 4,974
Geostationary satellites need to be in equatorial plane. Now my first doubt is what exactly is the equatorial...
Mar13-12 05:43 PM
11 3,154
Hey guys. If a body is spinning around the z - axis and an element of that body detaches on its own and flies off...
Mar13-12 09:51 PM
2 1,181
Hi guys, What im trying to do is to create a mathematical model for the attraction forces between two or more...
Mar14-12 03:20 AM
0 926
Hello, I'am new here and having some troubles with understanding the difference between 2 related subjects. I...
Mar14-12 06:01 AM
7 2,484
Hi guys! Was wondering if anyone was confident with Fresnel equations for a refractive index interface. From what I...
Mar14-12 07:03 AM
1 1,108
Why is the boltzmann distribution for a collection of atoms independent of their total energy? (it only depends on...
Mar14-12 11:48 AM
2 1,016
I'm trying to understand what happens with beating light when the componenets have differing polarisation. I know...
Mar14-12 01:53 PM
2 1,509
Hi again! So, this time I have a ball with a mass m that I throw down from some point with a height h. I want...
Mar14-12 03:05 PM
3 1,242
I still dont understand why these types of motors tend to spin in one direction or another. In theory the direction of...
Mar14-12 03:49 PM
2 1,528
I am confused about the some of the concepts behind fluid statics. Here is an example to illustrate this, using...
Mar14-12 04:02 PM
2 1,676
So far my friends and I figured out that we will take a solution of chlorophyll, carotene and something else, then...
Mar14-12 05:33 PM
2 868
Is there a formula for finding out how fast, let's say, a less dense oil will travel to the surface of water, or...
Mar14-12 06:09 PM
0 829
If a car is going around a 360 degree circle at 1 g (its maximum centripetal acceleration, and its maximum total...
Mar14-12 07:45 PM
18 1,803
Hello, I was wondering if someone knew if it was physically possible to have a 2x1 optical wave guide combiner...
Mar14-12 08:49 PM
8 1,452
I've been trying to derive the Stefan-Boltzmann law using thermodynamics, and have resorted to looking up the...
Mar15-12 01:59 AM
20 9,555
Entropy is defined by: S(A)=\int^{T_A}_0C_V\frac{dT}{T} where A is state of the system in which temperature is...
Mar15-12 09:24 AM
Mitadru Banik
1 644
When I calculate the pressure in an enclosed cylinder, I have to find the average force of the collisions of the air...
Mar15-12 03:51 PM
16 1,532
Is it valid to say that an inductor stores power? I know an inductor stores energy in its magnetic field. Power =...
Mar15-12 03:54 PM
jim hardy
19 3,083
Hello everyone, I am doing a research on aberrations in order to prepare a presentation. I looked at Optics, Hecht...
Mar15-12 08:43 PM
5 1,055

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