Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
 Views: 133 Announcement: PF Member Award voting is open! Dec12-13 Meta Thread / Thread Starter Last Post Replies Views Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people... Apr22-11 06:26 AM ZapperZ 1 39,908 Hi, why is it that as the frequency of the driver decreases below the natural frequency of the oscillator it reaches a... T 03:14 PM AlephZero 3 270 This is a question to those who have the 3rd edition at their disposal. Where do 3.45 and 3.46 come from? I understood... T 02:59 PM ASmc2 7 164 I've always thought of work done as being calculated by something like ∫F.dx whenever a force acts on a moving body. ... T 02:26 PM MalachiK 6 308 I was trying to do some studying regarding the definitions of energy, and I've hit a road block. I know that... T 01:08 PM Ethan0718 9 269 I have a question, according to rules for the sign of x and y-acceleration; when I should use the negative sign for... T 10:32 AM MarcoAurelio 17 361 It's a theoretical study. Like the image showing, the curved piston move in container and need energy for that. In the... T 08:31 AM DaleSpam 4 201 I'm not sure if I'm right .. Here's my thought: 1. The First Law of Thermodynamics is the only single law which... T 03:12 AM Ethan0718 28 634 When we have a current in a long wire, what is the kind of total energy of the system? We do have an electric field... T 01:41 AM FarticleFysics 7 410 - - - Hello, this is my first post on this forum so nice to be here, and I'll be very appreciative of any responses. My... Y 01:10 PM mikelotinga 4 271 Hi, I am having some argument with my friend over the following elementary physics problem: Assume there is a... Y 11:26 AM adjacent 13 241 Hello everyone, Here is something I've discussed with some colleagues recently and that generated a lot of... Y 11:12 AM sophiecentaur 24 425 Hi, I am working on this water pressure problem, ... Y 07:31 AM sophiecentaur 5 239 I am going through my professors notes on generating functions. I come across the following equation: ... Y 01:34 AM mjordan2nd 0 126 Our professor's notes say that "In general, in Hamiltonian dynamics a constant of motion will reduce the dimension of... Y 01:25 AM mjordan2nd 3 147 What is the mainstream answer? And why is asking if the electric charge is quantized important? What does it mean to... Y 01:00 AM AlephZero 1 151 Hi! When you are calculating ##\psi## or ##\phi## from the horizontal or vertical velocity components of a fluid's... Dec11-13 09:36 PM Chestermiller 4 249 Hello, I am looking into magnetic flux density in coils can anyone tell me if there is a general equation that... Dec11-13 05:41 PM Simon Bridge 3 216 Oh.. Many questions revolving on my mind.. (1) what are the conditions or in which situation can we do cavendish... Dec11-13 01:31 PM Bandersnatch 18 316 Thirty years after learning E&M from the wonderful book by Purcell, I noticed that the copyright page of my dog-eared... Dec11-13 10:21 AM DrDu 2 622 Hi, I'm an electrical engineering student starting research in nonlinear optics, and I'd like some good books to do... Dec11-13 04:04 AM Cthugha 1 323 Hi, I am trying to figure out heat engines. I don't understand why heat from a hot reservoir MUST exhaust heat into... Dec10-13 06:52 PM Coop 4 259 http://imageshack.com/a/img841/50/qgx3.png The above diagram shows the analyzer of waveform taken from a song. I... Dec10-13 01:21 PM nitsuj 16 397 By stretching a rubber band slowly and then slowly releasing it can we minimize the energy lost, (minimize the change... Dec10-13 10:40 AM Spinnor 0 253 First of all, I would like to say hello to everyone! I am not sure that this is the right place to post this, or even... Dec10-13 05:54 AM sophiecentaur 9 181 i had always belived that sound wave was a longitudinal wave till i come across something saying that its a transverse... Dec10-13 05:38 AM sophiecentaur 48 844 I'm trying to determine what equations I can use in order to calculate the maximum load (in pounds) across a sheet of... Dec9-13 11:08 PM elegysix 1 241 Hi, I am currently making an effort to solve a boundary value problem of electromagnetic field. The problem is as... Dec9-13 07:13 PM buoyant 2 189 this is an euler lagrange equation problem from the book- "classical mechanics-John R. Taylor", problem-6.11 find... Dec9-13 03:23 PM voko 3 280 I've looked alittle at the gas laws and I get the feeling that they are simplified. From what I can see they don't... Dec9-13 03:21 PM russ_watters 61 1,059 So I read somewhere that if we know u(s,v) i.e. internal energy as a function of entropy and specific volume, we can... Dec9-13 02:43 PM Jano L. 7 440 It just occurred to me that in the right gravitational field, say, in a low orbit 100 km from the core of a neutron... Dec9-13 08:29 AM Simon Bridge 2 240 I ordinarily would put this up in a homework/ coursework forum, but this isn't either one, its just something I was... Dec8-13 11:31 PM bcrowell 2 422 Why is the magnetic flux density uniform at the center of the circular loop ? Dec8-13 06:21 PM Baluncore 7 214 I want to know how to calculate the force , I know the formula and such but its just that I'm not sure about the... Dec8-13 05:16 PM tiny-tim 4 344 In my book it is written that Newton's shell theorem can be used to show that a uniform shell of matter exerts no net... Dec8-13 05:28 AM AakashPandita 13 264 The following is the Planck's derivation for black body radiation {\rho}({\lambda})... Dec8-13 02:53 AM Outrageous 0 253 Hello, I have a quick question of clarification on convex mirrors. If I have a single convex mirror, is it ever... Dec8-13 01:59 AM Simon Bridge 1 211 I'm trying to get a sense of how widely applicable Maxwell's equations really are. I've read that electrodynamics... Dec8-13 01:16 AM voko 21 754 Say I have three parallel wires facing north east that run through a square. The first wire goes through the top right... Dec7-13 11:29 PM jtbell 1 184