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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
ZapperZ
1 46,947
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
Maylis
1 239
Hi I need some help explaining kinetic moment and moment of the center of mass. This is an example:...
Apr13-14 01:32 PM
vela
8 339
Hi. I thought magnetic moment arose from closed loops of charge currents. How does then the angular momentum of the...
Apr13-14 11:35 AM
dextercioby
5 296
Take a uniform density bar in space for example. Would the center of mass move if the bar was struck at the very tip...
Apr13-14 04:13 AM
student34
6 275
Dear all, I am trying use Ampere's law and came across a problem which is a result of my lack of understanding. ...
Apr12-14 06:47 PM
Mr-R
1 191
Hi, I am posting here for the first time, hence, should I have violated any forum rules I am sorry and kindly...
Apr12-14 06:56 AM
premie
4 286
Hello, I would like to ask why, when a surface is not polished, it reflects less. I understand that when the...
Apr12-14 06:01 AM
stevendaryl
9 359
Hello folks! I have just come from a night at the pub with fellow students of life where over many a pint several...
Apr11-14 11:35 PM
qftqed
3 353
Quick question.... Can the gravitational constant only be used for earth or can it be used in questions regarding...
Apr11-14 01:03 PM
SteamKing
3 222
Could anyone help my with proving that the acceleration of an object that is moving with uniform circular motion is...
Apr11-14 09:55 AM
Emz19
4 201
If thermodynamic temperature can be interpreted as the average kinetic energy in a system, is there a quantity defined...
Apr11-14 08:14 AM
njmcmu
5 226
How do I tell if a torque on a system is internal or external before conserving angular momentum? I know that if a...
Apr11-14 12:23 AM
transparent
0 236
So as I am junior high school student just learned that when the terminals of wire are connected to a battery,an E...
Apr10-14 11:30 AM
cabraham
3 288
I'm working on a project for myself in regards to atmospheric reentry. I've come across some equations that describe...
Apr9-14 08:41 PM
Rd123
11 927
I have never dealt with moment of inertia before, this is a physics lab i need to do some pre planning for which...
Apr9-14 02:17 PM
cooev769
8 343
I am currently working on a robotic manipulation problem and need to form a model for how an object responds. I start...
Apr9-14 09:14 AM
Liferider
1 255
Where does ohmic resistance arise from, is it from the collision of the current with the electrons of the wire or is...
Apr9-14 07:57 AM
nasu
19 489
Hi everyone--first post, thanks for any guidance if I've posted in the wrong place. I've got a simple idea and I'm...
Apr9-14 05:08 AM
Bobbywhy
7 370
This is not schoolwork. Imagine that light did not have a constant speed, but behaved in the manner expected from...
Apr8-14 11:37 PM
Simon Bridge
1 309
Hi everyone. I've been having this discussion with a pal regarding what affects the grip of a motorcycle's tires...
Apr8-14 11:17 PM
tduell
11 1,894
Hello there, If a mass, m, is placed at one end of an boat of mass M, which is located on a frictionless ocean. If...
Apr8-14 12:58 PM
Matterwave
1 216
According to this website, there is an equation obtained empirically to obtain the amount of time it takes to cook a...
Apr8-14 08:30 AM
gmax137
3 243
I played around in another thread with mathematically determining where a car should be time wise on 1/4 mile run. I...
Apr8-14 04:28 AM
jumpjack
6 372
in a cyclotron the radius of the path of electron increases.but how if the velocity of the electron is accelerated its...
Apr8-14 03:59 AM
smart_worker
5 476
hey guys, can someone explain me Poiseuillie's law, because, I'm reading and reading and reading and don't understand...
Apr8-14 01:38 AM
SarcasticBunny
4 235
I have pictured I model about how electrons move in a circuit, What happens first is that electrons are built up on...
Apr8-14 12:03 AM
jlopezfis
3 292
Hello everyone, I want to have a simple example of an inductance calculation. The magnetic field normal to a...
Apr8-14 12:00 AM
jlopezfis
2 198
So, I have been studying angular velocity and linear velocity--and I want to use this information determine if a ray...
Apr7-14 11:08 PM
Simon Bridge
7 314
This relates to the extension of a uniform cross-section, homogenous, ideal wire which extends within the proportional...
Apr7-14 10:01 PM
kirakun
6 273
I am currently working on an experiment with piezoelectricity and was wondering how I would measure the force applied...
Apr7-14 05:38 PM
themadquark
3 230
Hi, I was wondering what the frequency of a photon is according to maxwell's equations. Does the...
Apr7-14 05:04 PM
Drakkith
24 955
Hi! I have been studying AC generators. I am confused about why there is no current when the armature is...
Apr7-14 02:07 PM
jtbell
4 236
I have a quick question regarding causality in SR and some specific examples. Collision between two bodies is one of...
Apr7-14 11:03 AM
DaleSpam
10 576
According to Faraday's Law a changing magnetic field induces an electric field, an example of this is if you have a...
Apr7-14 08:18 AM
nasu
3 211
Sorry, but this will be a long post. This isn't homework, I'm reviewing physics after many years of neglect. ...
Apr7-14 06:00 AM
jbriggs444
8 478
Imagine I am standing but not moving forward/backward, but I am rotating my body about my own axis. Now imagine if I...
Apr7-14 12:20 AM
UltrafastPED
1 189
I am not well versed in complex physics (I've taken honors physics in High school) so any help I can get with simpler...
Apr6-14 11:08 PM
WannabeNewton
6 327
How come a spring with applied weight of 1000 g goes down 9.8 cm but the same spring with applied weight of 500g goes...
Apr6-14 08:16 PM
jtbell
2 200
Consider a solenoid of length l, no. of turns N, n = N/l, area A, and negligible resistance. In its middle is placed...
Apr6-14 04:17 PM
rude man
8 396
http://www.physicsforums.com/attachment.php?attachmentid=67782&stc=1&d=1395173030 Consider the following setup (see...
Apr6-14 01:26 PM
DaleSpam
54 1,732

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