# 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: 2,221 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 47,852 First off I would like to say that this is not a homework question. I am trying to calculate the temperature of a... Apr25-08 09:33 AM Mapes 2 3,701 In reading Feynman's "Lectures on Physics", volume 2 I have a question and have included a scan of a small section... Apr25-08 08:26 AM Thomas2054 4 1,784 Hi, I am doing simulations on a particle in some potential together with a fluctuating force and friction. To do... Apr25-08 01:57 AM shad0w2000 0 1,291 Hello I really want to know what the advantages and disadvantages of optical pyrometers are? Thanks a lot Apr24-08 08:15 PM Redbelly98 2 3,664 Hello hello, I cannot for the life of me wrap my head around the idea of a boundary condition. I... Apr24-08 07:06 PM Lojzek 3 3,123 Suppose that I have an aluminum cube with side lengths 10 cm. Suppose that I uniformly and continuously apply a... Apr24-08 05:26 PM GT1 14 3,215 hi! Actually am learning Lenz's law but am just getting confused.i know that the change of a magnetic field around a... Apr24-08 05:08 PM mikelepore 4 1,754 Recently I was helping a friend of mine nail sheets of felt on a roof, and we finished applying the felt in the... Apr23-08 11:42 PM Phrak 18 6,249 hello In a textbook it is stated that if a piston of a gas syringe is used to compress the gas inside. Its Potential... Apr23-08 06:51 AM ay2k 4 1,928 I am looking for educational derivation( or any available and detailed) of the key principle of statistical... Apr23-08 01:28 AM bilha nissenson 12 2,493 A conducting ball of radius R and total charge Q is placed in a homogenous electric field E. Find the potential V... Apr22-08 03:33 PM pam 2 1,090 Hello. When a capacitor is connected in a circuit with an ac supply, a current flows in the circuit. fine. The... Apr22-08 02:07 PM ay2k 9 15,589 Hello, I have a question about how balls react on collision while having diffrent mass, lets say two balls are... Apr21-08 02:30 AM Shooting Star 5 1,623 As water is pulled into an opening by gravity, it begins to spin. Why does it spin? Apr21-08 01:34 AM kamerling 34 9,625 i cant figure this out. In an RC circuit, why is the maximum voltage of a capactior greater then the maximum voltage... Apr20-08 03:36 PM kamerling 1 928 suppose you have a solenoid with hollow core connected to a galvanometer. On one side you have a S-N magnet (ie.... Apr20-08 04:59 AM genneth 3 1,657 is it possible to continuously change the acceleration of light? Apr20-08 02:52 AM rcgldr 11 1,582 Hi! I am studying the diffusion of CO2, can anyone tell me the value (or/and any references) of the diffusion... Apr20-08 12:23 AM Crazy Tosser 1 4,101 Why is it that on a hot day, you can see a cars reflection on the road. What is this called? Apr19-08 03:51 PM Danger 2 3,175 Does anyone know where I can find a derivation how/why a light beam disperses? I'd like to see some sort of solution... Apr19-08 06:18 AM pinestone 6 4,872 Many things have an infinite source of energy, where it isn't CONVERTED from other forms of energy, nor mass. Namely,... Apr18-08 06:07 PM pmb_phy 43 5,421 I was thinking about newtons law and come across something interesting. F=ma=GMm/r^2 therefore a=GM/r^2. This is... Apr18-08 08:52 AM DavidWhitbeck 10 1,948 "The number of magnetic lines of force passing through any area in a magnetic is known as magnetic flux" So the... Apr18-08 05:41 AM Shooting Star 9 11,518 Hi all Not sure if I posted in the right spot but my question is in regards to optics and projection. To make a... Apr17-08 09:28 PM rotor_hed80 6 1,530 How to calculate the rotationals and torque forces on a hydraulic cyclinder, which is on a 14" arm welded to a 3" o.d.... Apr17-08 03:57 PM Windseaker 0 1,149 I was doing an experiment to determine the capacitance of a capacitor in a circuit with a particular resistor R. This... Apr17-08 10:55 AM Redbelly98 10 3,154 How can I calculate potential enegry? I have a interpretation about it, we should use the work that the string... Apr17-08 10:42 AM Redbelly98 1 6,592 I have a problem in trying to express a net force equation for a falling elastic object when collision ensues. For... Apr17-08 03:37 AM benabean 1 4,584 scenario: If any generator ultimately 'pushes' current (free surface electrons) down a wire, moving trillions of... Apr16-08 07:23 PM russ_watters 6 1,923 y for all real vertical throw, the time taken to reach max height must b shorter than time taken to return to starting... Apr16-08 07:12 PM indr0008 10 5,113 Hello, I have a potential function given numerically at points evenly spaced. That is to say, I have the numerical... Apr16-08 02:41 PM hattori 0 1,174 I found this problem in the book Resnick and Halliday many years ago (1992) and I had it in my mind until 2005 or so... Apr16-08 11:57 AM Barfolumu 9 1,505 Wel, this is just crazy. I've noticed something weird about spinning tops. Most of them start loosing speed, then,... Apr16-08 11:34 AM wysard 5 1,998 Hi, I'm a grad student in computer engineering and my research involves a fair amout of mechanics (forward/inverse... Apr15-08 04:48 PM D H 17 3,088 Why is it that if an orbiting space station is observed to remain always vertically above the same point on Earth then... Apr15-08 08:35 AM D H 6 1,781 Say you had a circuit with a battery and a loop of wire somewhere in the middle of the circuit. The loop of wire is... Apr15-08 06:46 AM Redbelly98 4 6,687 What is cause of capacitor breakdown? When we combine different capacitors in series and parallel combination, how... Apr15-08 12:59 AM Phrak 4 7,024 I am a physics student just finishing my sophomore year, and i was looking into what i could expect in upcoming... Apr15-08 12:28 AM Marthius 3 1,354 Is there such a thing in electrical circuits, or anywhere else? Or is this just considered reverse polarity, or 0V? Apr14-08 11:01 PM nuby 9 2,392 Ok, dumb question, I know. But it's been bugging me, and I can't find a straight answer anywhere, so here it goes: ... Apr14-08 10:11 PM Usaf Moji 2 1,259

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