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Quality answers to common physics questions
May25-09 10:31 AM ZapperZ 

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General Physics

- Nature and properties of matter and energy. For any physics topics not applicable to the categories below.
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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...
Apr8-14 10:13 AM
ZapperZ
166 160,394
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Apr22-11 05:27 AM
ZapperZ
2 63,683
http://www.oswirus.krakow.pl/cat_14/gyroscope/ A symmetric harnessed gyroscope accelerated to a given spinning...
Jun16-06 04:00 AM
Alf P. Steinbach
15 2,448
After reading in specialized Physics books and different articles, Iím still thinking about gyroscopical precession. I...
Jun25-06 04:36 AM
hamilton111
15 2,871
I was wondering if there is upper and lower limit (absolute) of frequencies for electromagnetic waves? My reasoning...
Jun23-06 05:53 AM
gato_
15 1,959
Hi guys, I've been having this debate with various snooker players for christ knows how long, and with no physisists...
Aug11-06 09:39 PM
DaveC426913
15 1,583
'An accelerator usually consists of a vacuum chamber surrounded by a long sequence of vacuum pumps, magnets,...
Sep18-06 10:57 AM
Farsight
15 2,243
Spin quantum number In atomic physics, the spin quantum number is a quantum number that parametrize the intrinsic...
Oct11-06 03:22 PM
Hontas F. Farmer III
15 760
Me and my roommate are having a debate about how speakers work... He says that speakers use ohms, he came to this...
Oct23-06 09:00 AM
DaveC426913
15 1,303
Hi There, I have been on the web for two weeks now trying to find an answer to my situation. There are no...
Oct28-06 01:02 AM
rcgldr
15 8,834
Happy New Year from two former moderators, John and Ted! Ted Bunn has just used my simple formulation of Einstein's...
Nov4-06 03:25 PM
Richard Saam
15 2,016
Has anyone taught, or been taught, using IBO (International Baccalaureate Organization) physics? If so, is it...
Sep26-06 09:01 AM
Flaubert
14 5,845
Hello everyone, I have a few questions relating to golf which i would like to understand further through physics. ...
Mar6-06 09:51 PM
GENIERE
14 2,135
ok so one of my friends asked this question.. if you are riding in the back of a truck, and the truck is traveling...
Sep3-06 06:28 PM
Danger
14 1,171
This press release was very impressive to me. http://www.fnal.gov/pub/presspass/press_releases/minos_3-30-06.html ...
Sep16-06 04:50 PM
mharney
14 1,547
This is a question that has been bugging me for quite and long time and I have been searching on the Internet, but...
Apr20-06 11:07 PM
pcxmac
14 2,058
If you are in a spaceship in the middle of nowhere in space. (minimum gravity) Nothing would weigh anything, right? So...
May21-06 11:12 AM
disregardthat
14 1,238
Hi, I'm writing an article which makes a point about the risks inherent in conducting research in secrecy,...
Jun12-06 04:00 AM
Jonathan Thornburg -- remove -animal to reply
14 1,512
If I look at for example my curtain I see that it is green. But why does it have this colour? I know it has something...
May26-06 09:22 PM
masudr
14 1,383
I opened the garage doors and turned on a pair of 150-watt incandescent (note INCANDESCENT) floodlights to admire a...
Jun28-06 10:20 AM
DaveC426913
14 1,024
Hello everyone. I'm interested in the methods available for estimatating the rate constants of chemical reactions...
Jul25-06 04:00 AM
Arnold Neumaier
14 2,881
why does the bombs and the plane form a "straight line" in the y-axis? the plane is accelerating away in the x-axis at...
Jul9-06 12:20 AM
Ukitake Jyuushirou
14 1,846
Hello, Im student of Master degree about geotecnic here in Chile. So Im traing to solve the next problem. What...
Aug10-06 03:58 PM
PerennialII
14 2,588
This is an interesting speculation regarding a thought experiment and its subsequent gravitational redshift...
Aug5-06 04:00 AM
Thomas Smid
14 1,340
Could anyone help me answering the above question? Thanks.
Aug16-06 04:30 PM
DaveC426913
14 5,865
A few months ago I was at work in the oilfield. I was struck by some tongs along the right side of my face. To...
Nov21-06 10:13 AM
tarful
14 1,581
In the remake of the battlestar galactica the ships spin around almost instantly and stop with a thrust in the...
Nov6-06 08:50 AM
DaveC426913
14 1,112
Hello, I'm trying to figure out a simple way in which to create a large, static electric field (at least 10^4 V/m,...
Nov4-06 03:26 PM
Dirk Bruere
14 1,929
This press release was very impressive to me. http://www.fnal.gov/pub/presspass/press_releases/minos_3-30-06.html ...
Nov4-06 03:30 PM
sr
14 766
http://www.oswirus.krakow.pl/cat_14/gyroscope/ A symmetric harnessed gyroscope accelerated to a given spinning...
Nov4-06 03:35 PM
Alf P. Steinbach
14 900
Does publication in the ArXiv in any way prejudice publication in the "good" refereed Physics journals? TIA, Don...
Nov4-06 03:32 PM
David M. Palmer
14 920
Hello everyone. I'm interested in the methods available for estimatating the rate constants of chemical reactions...
Nov4-06 03:37 PM
Arnold Neumaier
14 1,227
This is an interesting speculation regarding a thought experiment and its subsequent gravitational redshift...
Nov4-06 03:37 PM
Thomas Smid
14 1,143
Dirk Bruere at NeoPax <dirk.bruere@gmail.com> writes >Oz wrote: > >> >> Charles Francis' proposal (gr-qc/0604047...
Nov4-06 03:39 PM
Rahul Jain
14 569
Does anyone know if it is possible to wirelessly transmit electricity from one point to another like light or radio...
Dec14-06 06:15 AM
gato_
14 4,980
This problem (it's not homework, im looking for a concept) has stumped me. If a pool ball hits a a stationary pool...
Nov30-06 11:46 PM
Danger
14 2,725
i need an explanation for this situation. i've inserted an pingpong ball into a glass full with water (the glass is...
Jan17-07 04:51 PM
cesiumfrog
14 2,506
Can gases of atoms (or very loosely bounded atoms) conduct electricity?
Dec7-06 04:34 PM
pivoxa15
14 12,047
I am in grade 11 physics and haven't yet learned about thermodynamics or anything dealing with heat really. I am...
Dec13-06 05:49 AM
russ_watters
14 9,148
Consider the following situation. We have an evacuated straw, one meter in diameter, closed at both ends (but the...
Jan3-07 08:37 AM
hustleberry
14 2,501
Toasting in a toaster is usually considered cooking by (infra red) radiation. But the hot coils touch the toast so an...
Jan9-07 08:36 PM
pivoxa15
14 4,352
Today in class, my physics teacher demonstrated Newton's 3rd Law by nailing a hammer in a piece of wood. She drew a...
Jan11-07 09:04 AM
disregardthat
14 3,023

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