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Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
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Hello experts! I was taking class of optical fiber and communication. My teacher was teaching the class via...
T 03:15 AM
4 98
From my understanding, normal and anomalous dispersion are because the phase velocity is a function of k so it is...
T 02:52 AM
0 20
From this figure we could see the axis of rotation of wheel is y axis and it's translational motion is along x axis ...
T 02:10 AM
Simon Bridge
4 142
Dear Friends, I carried out an experiment of sudden release of oxygen (open nozzle) from an oxygen cylinder used...
T 12:23 AM
7 145
Hi 1) I am reading Pippard's Classical Thermodynamics and was confused by one of his examples in the attachment. ...
Y 11:25 PM
54 834
I'm having a hard time understanding air flow caused by pressure differentials. Given the following contextual image,...
Y 09:37 PM
4 115
Hello, I need data (articles and books) about what connection there is between the speed (or the power) of a...
Y 09:16 PM
4 198
Looking for a way to increase magnetic forces in electrical devices, an option is reduce the air gap, but some times...
Y 09:07 PM
0 89
I get that by getting a charged object near an uncharged one, charges of the opposite sign are induced on the surface,...
Y 07:14 PM
2 121
Suppose we have a planet of mass m orbiting a larger one of mass M along an elliptical path. If we use polar...
Y 06:17 PM
0 103
So, let's say a spacecraft at a large distance from any star needs to dump a tremendous amount of stored electrical...
Y 03:08 PM
3 148
Since 2 splitted beams meet at ONE spot later on, we have just one beam which flows to the detector, therefore I...
Y 01:16 PM
4 105
sir in the graphs of electric field due to binary charge configuration why some curves are below x axis and some...
Y 12:53 PM
3 74
Here is an excerpt from my textbook: "Ordinarily, this charge would simultaneously generate so large an electric...
Y 12:32 PM
1 86
Since Lagrangian is a function of q, q dot & time, then why in describing the Hamiltonian (H), L does not involve time...
Y 12:06 PM
6 187
Hi I am kind of Confused about an example in work done: It says that a man applies 250 N parallel to the slope to...
Y 06:30 AM
Doc Al
3 205
Is it possible to send enough light down a fibre optic cable to produce say 1000 Lumens? How would I go about...
Y 02:14 AM
6 123
Does a shock wave have a finite value that can be shared within a system? For example, if I explode a some...
Y 01:08 AM
Simon Bridge
1 101 Assume that the arbitrary-shape object shown has a...
Apr15-14 09:41 PM
6 123
After I have an expression for the stream-function in a problem, I can differentiate to get the tangential and radial...
Apr15-14 06:46 PM
4 88
Hello, I`m a bit confused about PV work. Here is the situation I am facing. δw = P dV and dw = F dx δw is...
Apr15-14 06:41 PM
49 869
I hope this is the right place to ask this. It is an experiment question. I have a 785 nm laser and a 1550 nm laser...
Apr15-14 01:24 PM
3 108
I've had a doubt about the following (somewhat contradictory) statements. 1) pressure applied to an incompressible...
Apr15-14 12:22 PM
34 408
I have been toying with an idea that may break the second law of thermodynamics for a while now, but it is basically...
Apr15-14 11:06 AM
6 201
Hello, I would like to try to "model" motion of two gravitationally interacting bodies. But from some "separated"...
Apr15-14 10:32 AM
1 95
how can we understand torsion of curve is in the direction of normal unit vector en?
Apr15-14 10:30 AM
3 102
Hi, I'm studying classical mechanics via Goldstein's book. And at the beginning of the chapter on the symplectic...
Apr15-14 09:22 AM
0 86
With increased pressure tungsten has a higher melting point. (source below page 30) 45kBar increases melting point...
Apr15-14 08:25 AM
2 112
I am curious about the effects of oscillation in a heat transfer system. For example consider a simple system...
Apr14-14 11:25 PM
3 94
Are there any good books to understand the BBKGY equations of kinetic theory?
Apr14-14 08:24 PM
4 137
Relating to the synchronous nature of the moon’s rotation and orbit around the earth, what would happen if the orbital...
Apr14-14 05:51 PM
1 124
I am teaching Physics and I'm not looking for help for a particular homework problem but on a class. Sorry if this...
Apr14-14 05:03 PM
9 233
... regardless of any possible technical problems, and then, on earth: a) someone throws an object in the air and...
Apr14-14 04:21 AM
10 244
After figuring out how to calculate Cd and Crr coefficients, I'd like to continue my "vehicle physics exploration":...
Apr14-14 04:13 AM
75 1,402
I recently looked at the reference in an article I am reading, and subsequently checked "Oscillations and Waves in...
Apr14-14 01:58 AM
1 129
I'm developing a scanner that uses a laser for edge detection. It will be mounted on a hexacopter that will traverse a...
Apr14-14 01:54 AM
4 165
It is taught that the classical treatment of the diatomic atom would give a heat capacity of $7/2$ due to 7 degrees of...
Apr13-14 10:31 PM
1 119
Hi all, im trying to get my head around some experiment results but im struggling a bit. According to my notes H...
Apr13-14 06:56 PM
2 155
Hello I have learned about maxwells relations and can derive them. I noticed that we had made an assumption of a...
Apr13-14 03:29 PM
1 181
Let's say that you have an open tank of water and a hose connected to the bottom of it. Water is flowing out of the...
Apr13-14 02:04 PM
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