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Quality answers to common physics questions
Aug12-14 11:12 PM Simon Bridge 
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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
2 71,224
The aim of this thread is to highlight recent (as in within the past 3 months) noteworthy physics papers that have...
Sep5-14 05:07 PM
DennisN
170 192,341
when UV light is shone upon a metal, can electrons be ejected from the metal or does this only occur if there is...
May25-04 02:31 PM
Hydr0matic
7 1,544
We talked about the photoelectric effect in class today. A follow up conversation outside of class started among a few...
Apr20-12 06:26 AM
sambristol
5 2,055
it is born.
Mar12-12 10:14 AM
M Quack
5 1,702
Vern I have as promised made an intensive visit to your web-site. What troubles me most is the lack of explanations...
Aug9-04 07:21 AM
McQueen
11 2,191
I am considering writing a formal essay on the photovoltaic effect, and I wanted to investigate the power or voltage...
Aug25-08 02:02 PM
alvintm
3 2,126
Correct me if I'm wrong, but the hottest combustion temperatures will result when the air/fuel ratio is ideal, or...
Aug1-08 06:26 AM
gmax137
9 4,303
hello i was wondering the physics that goes into transmitting waves such as: reflection etc.. To achieve a GPS signal,...
Mar10-09 12:17 AM
doc.madani
21 11,665
In most whistles, air is split somehow. When humans whistle (by forming a small hole with their lips), this is...
Jan24-13 04:13 PM
bigfooted
3 3,204
I have been searching all over the internet for information on the physics behind slipstreaming or drafting, such as...
Jun21-11 01:44 PM
boneh3ad
8 3,772
Can anyone explain the physic behind the Le Chatelier principle ? I know the gas will expand to fill an area but...
Aug15-11 02:03 AM
karen_lorr
8 1,739
The entities of observation not only determine physics, but also define the "deserts" between themselves. Planck...
Apr9-03 01:31 AM
elas
22 2,085
What physics do you encounter frequently yet habitually take for granted?
Aug4-04 03:59 PM
LastOneStanding
13 2,137
I have been playing around with these magnets (mine are 5.5cm long, 1.5cm diameter at the central bulge), and some of...
Oct14-11 03:23 AM
jetwaterluffy
0 919
Hello,I am a student attending Highschool and I was assigned in my modern physics class(2nd year physics course) to do...
Feb1-04 04:35 PM
chroot
2 1,124
Background: For those of you who don't know, a fifth wheel RV is a recreational vehicle (trailer) that is hitched...
Dec30-04 08:07 PM
rcgldr
1 1,378
HI there, I'm a practicioner of Parkour, which is a discipline that involves training to allow yourself to pass any...
Oct28-07 07:55 PM
cesiumfrog
3 7,707
Hello there! I was thinking about jumping the other day. How would one explain jumping by physics. So, before...
Feb7-11 04:42 AM
bp_psy
1 4,389
I'm not sure if this is the right forum, but here goes. I was thinking about the physics of a slap, or a "slappy"...
Jul20-11 03:25 PM
DaveC426913
18 3,083
I need help in determining the forces acting on the supports for a swingset. Do the uprights only act in tension and...
Jul19-06 09:26 AM
rcgldr
1 12,982
Hey, A waterpipe (alsno known as hubbly bubbly, hookah, shisha) is an oriental smoking device, that uses flavored...
Jan20-05 02:20 AM
Integral
1 2,408
hello, does anyone happen to have any good links to websites for physics relating to audio? i am going to be doing a...
Feb25-04 04:43 PM
Integral
1 1,544
I hate to be 'that guy' who asks silly questions among a group of highly intellectual individuals, but I didn't know...
Oct11-05 12:25 AM
pervect
2 993
I need to do some research on the physics of F1, and it can't be too complicated. I've already got centripetal force,...
Aug17-09 01:49 PM
freeman2
8 2,039
Hey there! I am from a community called Parkour. We are interested in mastering our environment and surroundings. ...
May23-09 03:29 PM
s1pacrat
13 6,418
I wasn't sure where to post this, so hopefully I didn't post it in the wrong place and hopefully I won't get flamed. ...
Oct27-10 09:42 PM
Archosaur
3 2,359
http://en.wikipedia.org/wiki/Flagella So I was reading Purcell's "Life at Low Reynolds Numbers", which I found...
Aug12-07 10:56 AM
arildno
1 846
Hello all, another question. Can anyone explain to me please the details of, for example, a person swining a sword?...
May15-03 05:55 PM
Alexander
1 6,641
I saw a working jetpack shown on a tv show on the science channel and it got me thinking how exactly we can make the...
Jun29-13 08:13 PM
nst.john
4 572
I've encountered a problem that I do not believe I am able to answer using my very basic knowledge of classical and...
Apr18-13 12:58 AM
Nugatory
3 844
I posted this here because seemed appropriate for theory development. As I am interested in physics thinking on this...
Apr28-04 06:37 PM
Mike H
3 1,630
Helium is seen to be "lighter" than air only when it is confined in a balloon or similar so as to be able to displace...
Sep26-10 03:37 PM
GTrax
3 2,505
Fruit growers sometimes protect their crops by spraying them with water when overnight temperatures are expected to...
Jun28-14 06:12 AM
sophiecentaur
2 641
Hello everyone, i'm searching for a literature where i could find topics on the physics of RFID systems. I already...
May11-08 05:03 PM
pomaranca
0 1,718
Ok so there is this guy name Rodney Mullen who invented tons and tons of skateboarding tricks and he is most known for...
Oct2-06 11:10 AM
rcgldr
3 6,023
I've been trying to teach myself the physics of sound. Specifically ive been trying to find out the variables that...
Jun29-13 10:54 PM
Simon Bridge
6 788
hey i just watched spidey man2 and was wondering about that fusion thingy that "doctor octopus" created. what is it...
Jul6-04 06:22 AM
Radical Edward
4 4,783
I am currently in 9th grade and am a programmer, however trigonometry is next year... You could probably consider...
Dec7-08 04:07 PM
Georgepowell
1 1,518
I have to do some research on the greenhouse effect (the physics of it anyway) I am not to familiar with the topic...
May25-12 09:08 PM
charmedbeauty
4 1,256
I'm back again. My physics of the lever is better than any other. All of physics, even Newtonian mechanics stumble...
Jul25-04 04:54 AM
Lama
6 5,284
Hi, I am currently working on a project over the summer, entitled 'The physics of time travel'. One of the first...
Aug9-10 04:39 PM
JDługosz
3 930

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