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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Apr22-11 05:26 AM
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Hi there, I've been looking over the internet for a while and I am looking to find the terminal velocity of a tennis...
May25-09 10:16 PM
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Hi, I really want to learn about the applications of quaternions in Physics (I have posted in this section as...
May25-09 07:08 PM
Cantab Morgan
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Hi Firstly, this is not a homework problem. It's regarding some flow experimental results I have and to understand...
May25-09 09:33 AM
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Hi, My name is Andy im a new user here. Im having a bit of trouble deriving the difference between the Francis...
May25-09 09:07 AM
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Hi all. Usually we have worked with electromagnetic waves linearly polarized along the z-direction (or x or y for...
May25-09 12:16 AM
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I have a question that annoys my basic understanding of kinetic energy. I know if I have a force-time plot then the...
May24-09 10:03 PM
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Hello, I have a question about a see-saw / lever problem. Does this configuration I have shown here allow me to treat...
May24-09 09:55 PM
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I'd like to ask how to calculate the rate at which the temperature changes, knowing the power input and the specific...
May24-09 09:41 PM
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Hello, We are studying the parameters of streamer in air. We create the compute model of streamer, but in our...
May24-09 08:38 AM
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Electron oscillate at their natural frequency. I know the force that brings them back is a force of attractrion...
May23-09 09:32 PM
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Elastic collision. I cannot find the after collision velocities (quantity and direction), when 2 spheres strike an...
May23-09 12:45 AM
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Hello, I'm reading a paper and find a figure difficult for me. In figure(a) EM wave(that is 1) is incident from the...
May22-09 09:19 PM
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We've got a set of Chatter Rings (, and are wondering...
May22-09 02:51 PM
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My basic question is this. Can usable energy be extracted from a mechanism that has force only, no movement. Here is...
May22-09 02:11 PM
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Hi, I have the fields for a rectangular waveguide in terms of cartesian components, that is, Ex, Ey, Hx, Hy. I need to...
May22-09 11:21 AM
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Temporarily communicating vessel isolated hydroelectric power plant with swimming piston, driven through hydrostatic...
May22-09 09:20 AM
1 884
Rear wheels' rigid positioning parallel to the longitudinal axis of the vehicle somehow makes the vehicle (two as well...
May21-09 10:19 PM
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I was just reading up some stuff about tides. Kind of figured this thingie out, hope my understanding is correct ...
May21-09 10:12 PM
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Hey guys, I've just starting learning about electric circuits at school and there's something I just can't seem to get...
May21-09 06:46 PM
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First of, PhysicsForum is the best thing ever XD Hello everyone, I'm trying to write a research paper about...
May21-09 03:15 PM
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Hello to all: Suppose we have two photons that are 180 degrees out of phase. We can assign one unit of energy to...
May21-09 08:22 AM
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Hi, I'm building a simple 2D simulator for mobile robots, and I'd like to be able to determine the translation and...
May20-09 05:21 PM
Han Fastolfe
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Hello All, I am wondering why the presence of a dielectric reduces the potential difference of a capacitor (after...
May20-09 03:21 PM
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Hi! In a book it said that it can be clearly seen from the interatomic potential (such as the Lennard Jones) that...
May20-09 10:12 AM
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just like the title says at what angle can you put the front wheel of a bicycle in relation to the ground and still be...
May20-09 09:55 AM
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I have a component made of some sort of stamped steel which has a significant magnetic field (upto 2000mGa) which I...
May20-09 08:51 AM
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A lot of physical phenomena tend to be explained (at least on a superficial level) by referring a current or particle...
May20-09 06:56 AM
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Hi, I have a simple question: if I have a circuit with a capacitor, how do I calculate the voltage on the capacitor in...
May20-09 05:38 AM
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I need to compute the energy to get a truck and trailer from 0 to 60 mph from rest taking into account the mass of...
May20-09 05:12 AM
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i have a personal project that has been brewing in my head since high school. i want to make an electron trap that is...
May19-09 07:13 PM
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Some basic curve integration leads me to the believe, that if you stack two coils into one another with opposite...
May19-09 04:43 PM
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Hi we connect a Voltage to heads of a conductive wire how will be the field lines inside Wire ? (cylinder wire) ...
May19-09 04:11 PM
Bob S
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I am trying to grasp how Maxwell's equations and energy/photons are related in a doppler shift problem. The way I...
May19-09 03:31 PM
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My friend has been shocking me and friends with part of something (a lighter maybe) he found. We even got the shock to...
May19-09 02:24 PM
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Hi, How do we relate F*d (Units: Nm.) with energy (Units: joule.). What is the logical link there? I am...
May19-09 08:14 AM
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Hello. I know that entropy equals the Boltzmann's constant times the natural log of the multiplicity but I do not...
May19-09 02:30 AM
4 9,991
how does one perform a frequency sweep to obtain resonant frequency? for instance, if the inductance is 50mH and...
May18-09 03:10 PM
Bob S
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Simple question. So in an example question I'm lookin at finding the work between 2 points on a line. The points...
May18-09 03:04 PM
5 959
If we consider an isolated system in which a process occurs, then according to the clausius inequality : dS \geq...
May18-09 11:51 AM
Andy Resnick
32 10,161
Is temperature frame dependent? The temperature of the system is due to the translational,rotational and...
May18-09 11:23 AM
Bob S
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