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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
1 46,189
I need to calculate the the load F (in multiples of W) required to keep the link ABC in equilibrium under the action...
Sep27-10 11:43 PM
0 875
From theory, we know that Boltzmann entropy for a given distribution, defined through a set of occupancy numbers {ni},...
Dec21-12 09:08 AM
1 786
I was reading in my geology book (Earth: An Introduction To Physical Geography, 7th ed. by Tarbuck and Lutgens, 2002,...
Oct21-10 03:48 PM
9 2,694
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 2,456
When a cue ball is driven into another ball, it is either not accelerating or decelerating at impact. It has momentum...
Aug9-11 12:14 AM
1 1,160
If I combine 2 laser beams of different wavelengths, would I get a beat frequency of the difference between the 2...
Oct15-11 02:46 PM
2 1,189
I went for a run and measured time and distance. I wanted to estimate how many calories I used. Suppose a ran a...
Dec13-07 07:17 AM
Shooting Star
1 2,530
Hi I am new to this forum. I am an amateur blacksmith/machinist/all around tinkerer. I took a class with a...
May28-14 07:33 AM
4 194
Okay, first a brief intro. I studied math/physics extensively as an undergrad...but that was over 10 years ago now. ...
Sep3-10 09:08 PM
Bill M
2 920
Hello, I'm trying to figure out a method of calculating the work done by friction on an object sliding down a...
Feb17-11 04:32 AM
14 3,908
If the crest of one light wave meets the trough of another light wave of the same frequency and intensity they...
Feb17-08 02:04 PM
1 3,888
How do I calculate the force (in newtons) acting on a conductor moving through a magnetic field? This is in relation...
Apr24-07 06:29 AM
bill nye scienceguy!
6 1,750
does a high dryness fraction mean that the steam is dry or wet?
Nov27-07 09:52 AM
bill nye scienceguy!
4 18,550
i need to find max shear stress at a point on a plate (with a hole) under tension. i found using experimental data the...
Dec6-07 10:54 AM
1 4,276
if there is a decrease in pressure at constant temperature will there be an increase in entropy?
Dec20-07 04:31 PM
Andrew Mason
7 5,664
what exactly is the cut-off ratio, in physical terms?
Jan2-08 03:57 PM
2 3,932
I want to calculate the temperature on the outside of a pipe which has a heated fluid flowing through it. If I know...
Jan23-09 06:14 PM
2 7,911
I am in the final year of an MEng in mechanical engineering, working on my Final Year Project. I've been designing a...
Nov17-09 08:19 AM
bill nye scienceguy!
0 575
I guess this question applies to deriving empirical equations from any data set but in my engineering studies I've...
Mar23-10 02:16 PM
1 2,505
As I was sitting at work the other day productively watching an aeroplane fly across the window I started to think of...
Feb28-12 07:49 AM
5 708
Although continuity equation is often part of fluid mechanics, does it have an application in air flow? For example,...
Jun20-13 07:31 AM
3 568
Hi, I do not know how to drive an experession for energy loss of damped oscillator.I know that: X(t)=A...
Oct3-05 08:14 PM
2 4,739
I have an application (clothes washer) which requires a drive design such that: The drum contains 170 lbs of water...
Nov17-09 03:50 PM
Bob S
8 829
I would like to ask if anyone could explain how torque is consumed through a reduction ratio - in this case pulleys on...
Dec15-09 06:26 AM
2 4,804
Hi, i have visited the forum for an explanation in cuantum theories (curious) and now i need other help. In my...
May30-08 03:30 AM
4 1,251
Hi Everyone, I am trying to calculate the exit velocity of a dart which is propelled by compressed air. Please see...
May23-12 06:38 AM
1 918
Hello everyone, first time poster. A fairly basic question: What is the mechanism by which synchrotrons produce...
Sep14-11 05:29 AM
3 1,106
I am currently looking into how aeroplanes fly for a report which i am writing. I understand the theory behind the...
Mar22-12 11:32 AM
4 931
After looking into the lift force i hve been able to calculate most of the things i know. I have however been told...
Apr15-12 12:34 PM
2 1,381
Hey guys, i'm new to these forums so i'm hoping i have posted this question in the appropriate thread. Recently, i...
Apr30-07 10:02 PM
3 2,379
Dear all By right - hand rule, if circular motion of the object is anti-clockwise in horizontal circle, so that the...
Dec2-03 10:42 AM
2 6,568
Dear all I know that torque = rxF, but I don't understand the concept of torque. Would you mind teach me? Thank a...
Dec2-03 09:58 PM
1 5,017
Dear all I know that E(grav) = -GmM / r, Can I use Work done = F x s to calculate the P.E between two mass of the...
Dec8-03 03:26 AM
1 1,245
Hi, I'm doing a project on the Gauss gun and Newton's cradle. I'm trying to produce little models in MatLab and have...
Jul4-11 05:45 AM
0 1,380
I'm very confuse about the idea of applying newton's law of forces and torques on rolling body. The book shows that...
Sep29-10 10:56 AM
Doc Al
1 1,089
Hello all, I have a question. Now I'm not sure if I have this right, voltage relates to the number of turns in a coil...
Dec24-10 03:28 PM
6 1,311
How many watts of power would it take to get a a mass of 1kg up to 300m/s? Leaving out friction, drag, etc.. Just how...
Jan7-11 04:19 PM
10 3,357
For describing position of a particle we need vector coordinates r=(x,y,z). But when you go to higher physics like...
Oct7-06 07:51 AM
6 4,920
Hi, I'm not sure if this belongs here or in general physics. Moderators please feel free to move this post if it is...
Nov4-05 04:31 AM
7 3,718
At the point where all gravity equals 0, (middle of the earth) is there a atom. Or does it lie between 2 atoms. Is...
Nov19-10 06:38 PM
4 832

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