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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Apr22-11 05:27 AM
ZapperZ
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The aim of this thread is to highlight recent (as in within the past 3 months) noteworthy physics papers that have...
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Hello all, I Found an old keepsake when I recently moved that I bought in Italy 15 years ago. It was a small...
Feb8-09 03:54 AM
Borek
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Hello to everyone. I feel quite humble to be posting on this physics forum as I am not a physicist but I am in awe of...
Jul13-04 09:29 AM
Mentat
4 1,523
I have put the new, twentieth edition of my freely downloadable physics textbook in pdf form on ...
Jan9-07 05:00 AM
Christoph Schiller
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The new, twenty-first edition of the freely downloadable physics textbook is available on ...
Nov22-07 05:00 AM
maxwell
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I recently bought some pontoons to build a floating camp on. I was wondering if you guys can give me the weight...
May30-10 08:44 PM
JDługosz
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Why can we add masses together and get a mass? This question may seem stupid, but we can't do the same with time: we...
Nov30-06 05:00 AM
J. J. Lodder
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It has been a long time since I have emersed myself in physics but I am trying to write a labview program that takes...
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I don`t understand the solution for the following question: A satellite is in orbit around the earth. Consider the...
Apr19-10 03:48 PM
rcgldr
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If pressure = force x area 1) why do we measure it in mm of Hg (distance) 2) why do I observe pressure to decrease...
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Hey guys, I've been looking around online and only find formulae for car passing through a distance with an initial...
Dec1-11 11:23 AM
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I'm curious to know how the space between two magnets arranged so their like poles are forced to be nearer to one...
Mar29-11 08:42 AM
ChrisWhewell
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In a parallel or series circuit comprising an inductor and a capacitor, is the resonant frequency value of the circuit...
Apr28-11 08:43 AM
f95toli
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I want to ask which type of the following would have a greater repulsion electrons with parallel spin, electrons with...
Dec31-06 01:38 AM
chriswwt
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I know that the light has no net charge and so it can't be bent by magnetic and electric fields but why there is no...
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Doc Al
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Although this question is simple it's been bugging me: If you were to take one kilo of antimatter and annihilate it...
May19-08 07:42 AM
Astronuc
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First of all am I right in thinking that ( comparitivly ) low orbits such as the ISS need very high velocities (in...
Nov21-12 01:51 PM
K^2
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I understand the general theory of special relativity. But at what points do length and time dilation occur? ...
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How can I convert force on a load cell, tension and compression to acceleration! I think maybe something along the...
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benhoskins
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What exactly will a TOE do for us as a society. How will we benefit from knowing all the four forces are united or...
Sep28-03 01:11 AM
elas
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if a ball of mass, m is travelling at v and it hits a stationary ball that is a much larger mass (ignoring air...
Mar23-10 01:07 AM
rkmurtyp
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The new, nineteenth edition of the free Motion Mountain physics text can now be downloaded at ...
May2-06 04:00 AM
chri_schiller@yahoo.com
0 1,860
The new, nineteenth edition of the free Motion Mountain physics text can now be downloaded at ...
Nov4-06 03:32 PM
chri_schiller@yahoo.com
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Given a wave that begins at a point source that travels outward spherically, i know that for a 1D wave (from the...
Nov24-08 04:08 PM
clem
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I have some questions regarding the reflective properties of sound waves... If a spherically propogating wave...
Dec3-08 02:25 PM
chrom68
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I have two springs arranged in series (remember circuit diagrams from physics class!). One has a low stiffness...
Mar11-09 09:46 PM
berkeman
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Finite element models produce stresses (Pa) as a result of loads applied, which can be extracted from packages such as...
Apr12-09 01:40 PM
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I'm trying to simulate light rays going through an eyepiece to characterize its magnification in function of the...
Jun11-13 03:45 PM
chromatic
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I've been finding that many videos online depict AM waves (the modulated wave that is transmitted from a...
Aug5-14 02:35 AM
sophiecentaur
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Hi, I'm interested in AM radio transmissions causing interference (not just noise, but the transmission actually...
Jul18-14 01:24 PM
kyaw ye yint
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To the best of my knowledge, radio waves are generated by an oscillating (or alternating?) electric current, which...
Jul17-14 08:56 AM
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Hello! I want to induce a (weak) signal in a wire across the room from me. I was just wondering, how would I go...
Aug6-14 03:31 PM
berkeman
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So I was looking up what causes thunderstorms online and found this: "As hail moves within the cloud it picks up a...
Aug17-14 05:04 PM
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I was just wondering, are there any waves that can pass through the human body in a straight line, without being...
Aug30-14 02:42 PM
mfb
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can anyone explain virtual particals and how they relate to the magnetic and the electric feilds, porfavor.:smile:...
Apr16-06 02:06 PM
chromosome24
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can anybody explain to me virtual particals and how they related to the zero point energy?:confused:
Apr24-06 06:51 PM
chromosome24
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I just want to know, is a technology designed to reduce the effective mass of a system possible, at least in theory? ...
Jan1-14 05:57 PM
TurtleMeister
2 426
http://i47.tinypic.com/mt55s7.jpg -See for image You drop a ball on this vertical parabola with point A as...
Jan30-13 05:22 PM
ratchettrack
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Isaac Asimov wrote a story 50 years ago about entropy http://www.multivax.com/last_question.html I believe this...
Oct10-07 02:13 PM
chronie
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I'm a computer science major and I was talking to a senior and he was doing a program for a presentation and he was...
Dec15-03 04:34 AM
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Taking martial arts they use a bit of physics to try to explain why we do certain things. Our instructor will tell us...
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