Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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 Meta Thread / Thread Starter Last Post Replies Views Views: 87,982 Announcement: Follow us on social media and spread the word about PF! Jan16-12 Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people... Apr22-11 05:26 AM ZapperZ 1 45,973 Enthalpy is a state function because it only depends on the initial and final state. Work is a path function because... Jan4-13 04:37 AM Studiot 15 1,651 Hello everyone i bought a kit for my senior project on electromagnetic levitation. It uses an electromagnet to suspend... Jan3-13 11:34 PM wubbzee 4 933 We are usually told in an introduction to general relativity that when special relativity was completed, there was a... Jan3-13 08:58 PM LastOneStanding 2 601 I thought of this question the other day, and I was unable to solve it. A Google search has not helped, so I thought... Jan3-13 06:11 PM tiny-tim 3 767 I was watching a video on the internet about charge distributions over solid conductors. The solid conductor was... Jan3-13 03:08 PM CAF123 2 702 I have been scanning a physics book. See attachment. The diagram shows that a light bulb has a continuous spectrum... Jan3-13 12:13 PM barryj 8 825 Here is a picture of a situation I thought of: http://i.imgur.com/mLr3Q.png The circles between the magnets... Jan3-13 06:50 AM BruceW 21 1,415 Hi,can someone explain me this picture? : http://www.accessscience.com/search.aspx?rootID=792797 I dont... Jan3-13 05:49 AM thedy 3 2,145 I'm confused about the single slit diffraction pattern. Why are light and dark patterns? Where is the constructive and... Jan3-13 03:20 AM Drakkith 4 617 β= (1/v)(∂v/∂T)constant pressure. What is the v represent? molar volume? If I am given the β and the change of... Jan2-13 08:14 PM Chestermiller 5 962 This is not a home work, it is part of the text book on elliptical polarization. Attached is a page in Kraus Antenna... Jan2-13 07:13 PM yungman 0 904 I'll be teaching an AP Physics class in a few weeks. Usually labs are equiped with lots of desktop computers, to... Jan2-13 04:05 PM johnbbahm 5 938 i,Lj]=εijkLk how can I prove this expression classically? Jan2-13 02:04 PM ssamsymn 2 661 I have a conceptual doubt concerning capacitors. Suppose that I connect the terminals of a resistor to a charged... Jan2-13 01:41 PM pc2-brazil 5 823 I've seen the standard derivation of the expression for liquid pressure P = dgh where, d = density of the liquid;... Jan2-13 12:15 PM BruceW 13 1,948 On an undergrad engineering level of talk, is there any difference between conduction and diffusion ways of heat... Jan2-13 10:30 AM indianaronald 3 2,008 Convection heat transfer rate decided by Newton's cooling law doesn't have a relative velocity between the fluid and... Jan2-13 10:29 AM indianaronald 6 1,058 Why is the energy stored in a spring 1/2 * distance * force? Isn't work just force * distance? Jan2-13 05:53 AM GeneralOJB 2 584 Ok, so the other day I was chatting with a friend of mine, and this doubt came up... It is my understanding that hot... Jan2-13 12:16 AM SteamKing 5 820 I am trying to understand the derivation of Snell's law using Maxwell's equation and got stuck. My text book says... Jan1-13 08:33 PM Simon Bridge 6 1,128 My brother and I were discussing fuel consumption which lead to this thought experiment. Let's say you have two... Jan1-13 03:07 PM Harut82 9 1,237 to see anything will occur spontaneously or not. A system is isolated, we will look at the entropy. A system at... Jan1-13 04:09 AM Outrageous 0 545 Attached are the drawings. Does the polarity Eof depend on \Gamma =\frac {\eta_2-\eta_1}{\eta_2+\eta_1} So if... Dec31-12 03:23 PM yungman 0 696 Buoyancy is an artifact of gravity that moves mass up away from the center of the earth in a fluid whenever the... Dec31-12 01:26 PM genergy 16 2,357 The field outside a body with spherical mass distribution is well known but for a non simmetrical body (or a almost... Dec31-12 10:22 AM Frank66 6 1,604 Hi I just wanted to run this hypothetical power plant idea past you physics guys to see what kind of feedback I... Dec31-12 10:18 AM russ_watters 42 11,591 Hi, I'm studying Small Oscillations and I'm having a problem with normal modes. In some texts, there is written... Dec31-12 07:46 AM Jano L. 3 880 In rolling without slipping, why does the point of contact have zero velocity relative to the ground? If so, how can... Dec31-12 07:33 AM rcgldr 5 1,638 Hey forum. So I was posed the question whether the forces on two ropes will vary or not depending on if the ceiling... Dec30-12 11:34 PM SweatingBear 10 1,218 Is it correct to assume that two objects, with different masses, dropped from the same height at the same time will... Dec30-12 06:25 PM tiny-tim 8 1,103 I took a piece of carton and cut out to strands in it. When I shine the line through it, it only projects the two... Dec30-12 03:34 PM jtbell 2 1,006 Hello, why if a ray pass though different materials its direction changes ? couldn't its propagation speed just... Dec30-12 08:55 AM barryj 1 504 we know that in rolling motion the top of drum has linear velocity 2v if the centre of mass has linear velocity v.... Dec30-12 06:46 AM Phyman1109 4 766 I want to find Poisson brackets. =\sum_l (\frac{\partial M_i}{\partial q_l}\frac{\partial M_j}{\partial... Dec30-12 02:44 AM bznm 2 1,047 Is that possible to calculate entropy when dq=+100J , temperature change from 271K to 273K ? Ice melt until 273K ,... Dec30-12 01:54 AM Outrageous 6 1,229 So I was reading my textbook and it says that we are given a situation where two particles of the same charge are... Dec30-12 01:18 AM Phyzwizz 2 920 Hi! :) I'm trying to calculate the appropriate lenses to use for a project. I need to magnify a 50mm by 50mm... Dec29-12 11:43 PM kingkahuka 1 898 Alright, here's the context of my question: I have a pistol for home defense, and I keep a magazine loaded with... Dec29-12 07:46 PM russ_watters 6 2,317 In his Nobel lecture Feynman describes an electrodynamic action between a set of particles (equation 1, one third way... Dec29-12 06:13 PM Jano L. 1 659 For ideal gas , can I assume Cv dT = nkT (3/2) , thank you Dec29-12 03:41 AM Outrageous 2 1,092

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