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 Meta Thread / Thread Starter Last Post Replies Views Views: 5,822 Announcement: Follow us on social media and spread the word about PF! Jan16-12 Pinned: Recent Noteworthy Physics Papers ( 1 2 3 ... Last) 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 170 192,523 Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a... Apr22-11 05:27 AM ZapperZ 2 71,279 i am in total confusion to co-relate p.d of electrostatic and p.d of electricity. can somebody help me out?????/ Mar1-12 03:40 PM Khashishi 2 1,536 Forgive the sloppy use of math and inability to produce an image. I noticed this last christmas. If you have a... Mar1-12 03:21 PM tiny-tim 5 846 How do you get a high voltage, low current? This is where I am getting confused. I was under the impression, that the... Mar1-12 01:42 PM vkash 1 1,827 In measuring of the resistance of a superconductor, we are using a four=point probe to determine the voltage. We have... Mar1-12 09:01 AM gboff21 0 922 Not sure under which forum this should have gone under, anyway can someone who really understands it explain it to me... Mar1-12 07:48 AM Claude Bile 3 913 Is there any parameter that represents the chaotic-ness of a system? For example, can we show that a 4-body system... Mar1-12 07:43 AM Claude Bile 2 1,409 Hello, I have voltage signal that is time gated up to ns. I want to integrate this signal over this time interval,... Mar1-12 07:35 AM MAAB 9 1,308 Applying the 2nd law of thermodynamics to the whole universe is tricky, since if the whole universe would always... Mar1-12 07:26 AM mc^2 16 5,899 I am trying to figure out what size eaves we need for our house extension. I've tried a few calculations and now... Mar1-12 04:12 AM sophiecentaur 6 1,804 hi, i am reading this statement in a paper. but i am curious about how it is happening?? what are the reasons causing... Mar1-12 03:23 AM gratecircle 0 910 how to find the coefficient between the penny on ruler when it spins with uniform circular motion. Here isthe picture... Mar1-12 12:22 AM hnguy038 0 747 How do you find the heat of fusion with only solubility, MW and temperature given? These are for an anhydrous,... Feb29-12 07:11 PM sciencesofia 0 1,137 If i use a certain amount of energy/work - lets say 0,36 J - to wind up an old alarm clock, will the mass of the clock... Feb29-12 05:30 PM Drakkith 6 1,224 Yes, that is my problem. I could never reproduce in computer the scheme I learned in Computer Engineering graduation I... Feb29-12 10:47 AM castman 0 958 Hello everybody, I have a (potentially strange) question. Let's say an electron enters a magnetic field; what... Feb29-12 10:40 AM granpa 1 1,178 Can Power supply be smaller than power dissipated? Because I saw this in one question... Feb29-12 09:26 AM athrun200 6 2,185 Can accelerating neutrons emit electromagnetic waves? Will neutrons absorb or reflect EM waves? If not, what would a... Feb29-12 06:59 AM Drakkith 17 2,114 Is there an equation that deals with the dissipation of sound waves in air? As in, how much they die out with... Feb29-12 05:47 AM sophiecentaur 2 4,300 Hello, as I said in the title, I'm trying to re-learn physics. I say re-learn because last year when I finished... Feb29-12 05:29 AM Hobin 2 1,266 Conceptually, what does it actually mean to take the 'moments about a point' on a body, even if that point is not the... Feb29-12 04:57 AM sophiecentaur 2 3,025 Why is the universe a big, vacuumed space with stars and planets and gravity and dark matter? Why is there life and a... Feb28-12 10:15 PM DaveC426913 2 1,050 So, I want attend either college X or Y; I'm using variables because I don't want to expand on the college, et cetera.... Feb28-12 10:11 PM grendle7 0 1,220 I am studying a biological system comprised of roughly 10000 cells. My model studies the probability that a cell... Feb28-12 10:04 PM bp_psy 1 886 I understand what a phase angle/difference is, but when it comes to applying them in questions (from past papers) my... Feb28-12 07:50 PM mutineer123 3 3,835 I was reading a little about Chaos, and I realise that period doublings are the bifurcation points. What are... Feb28-12 03:14 PM ZedCar 0 824 Ok I am wondering how to solve this or go about figuring it out. This is what I am trying to do. I have a 253.859... Feb28-12 02:18 PM cjl 7 2,078 thanks Feb28-12 12:40 PM DennisN 42 3,912 This thought experiment involves two people named Person-A and Person-B. Person-A fires a gun from a car which is... Feb28-12 12:26 PM forumsuser 9 1,239 There is a gummy bear stuck to the ceiling where I work. When it hit the ceiling, some of its kinetic energy would be... Feb28-12 11:53 AM seekingtuva 2 964 my friend and i are doing a DP lab, we are trying to find a resister which reacts to water/ moisture in soil. a... Feb28-12 09:40 AM Andy Resnick 1 1,792 I have a hemisphere dome, which volume = \frac{2}{3}∏r3 Inside the dome, pressure is 1atm (assume 1.05 kPa) Outside... Feb28-12 08:13 AM Hobold 5 1,175 my husband has a van de Graaff generator and one day he decided to bring it out and show me since i had never seen... Feb28-12 07:44 AM Deamonisi 7 1,537 Please help me in removing my mistake, since i see 3 satellite required to locate an place on earth and... Feb28-12 07:38 AM rajeshmarndi 12 1,848 Q. A spring balance read 10 kg when a bucket of water is suspended from it. An iron piece having some mass is... Feb28-12 05:15 AM rishch 2 1,490 Hi, sorry if this is in the wrong forum. I have a physics problem I do not understand: Jim is removing a piece... Feb28-12 01:13 AM indieindie85 1 1,008 During one of my labs we were using circuits. I connected a 9V battery in parallel with a 2.kΏ resistor and a... Feb28-12 01:09 AM maimonides 11 1,739 I would like to get some profesional advice from you all on how to calculate an object distance from camera using the... Feb28-12 12:40 AM sakurarandom 0 2,099 So, I'm not in any way trained in any type of physics...so I'm sorry for the very basic way of explaining my question.... Feb28-12 12:19 AM Drakkith 4 935 Hello, I'm looking for a college that offers Physics 4C(or equivalent classes) in this coming summer in CA or nearby... Feb27-12 10:55 PM 18376935 1 938 So I'm sure everyone here knows of the basic spacial dimensions. 1D is a line, 2D a plane and 3D a cube. There is even... Feb27-12 10:55 PM SHISHKABOB 29 4,902

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