Hey Definition and 104 Threads

Just saying hello. My name is Alyssa. I'm taking physics now at my community college. I'm having a lot of trouble. Hopefully I can gain some knowledge through this site. Thanks all =)

www.anaface.com Seems to be the fastest if you link the image from say Photobucket rather than uploading it. Bonus round: http://www.picitup.com/NewMatch/match_results.jsp?searchid=193671 - Celebrity lookalikes as a male http://www.picitup.com/NewMatch/match_results.jsp?searchid=193672 - As a...

Hey Neanderthals :) Just thought i'd share: Neanderthals, Humans Interbred—First Solid DNA Evidence http://news.nationalgeographic.com/news/2010/05/100506-science-neanderthals-humans-mated-interbred-dna-gene/ "The next time you're tempted to call some oaf a Neanderthal, you might...

Hey asume i have conected up parallel plates but of different areas with a given potential difference ie battery, what hapens 2 the plates actualy i expect a uniform field, but how can we obtain that since we would require same potential on each plate! and secondly i expect both plates to...

I am transferring into radiology next year and am a little weak at math. Can anybody here give me some ideas of what type of math I should be focusing on to get me through the course?

Hey. I don't know where to introduce myself, so I'll just put this here. Lol, maybe people here don't introduce themselves and I'll look like an idiot 'round here. Anyways, what's up? I'm Carlton, I'm 14, I'm a freshmen and I'm currently enrolled in AP Bio. My goals are to follow the track...

I have two questions and i have no clue how to solve them so please... 1. dropping a mass of M from some height H over a feid which is being covered with a lot of snow. exentually the mass is in halt underneath the snow in deep D the question is what is the average force that the snow is...

Hey. There's a document that has several Chinese characters. Unfortunately I can't copy and paste the characters into google translator without giving me bull$#!T. Does anyone have an idea on how I can convert the document to English?

my theory of black holes, and the start of the universe, ok ,all black holes go to central point of mass, all the central points of all the black holes combine to converge to a parallel universe, which takes the mass from our universe, to start the "big bang", when enough mass has been forced...

Im throwing a party at my house for Halloween. I want to dress as something sexy without being too nasty. Your thoughts!

It's been on my mind lately. Do we have any idea of what our universe is contained in? Whats containing it even? Is this question silly and not possible to know about??

has anyone mixed titanium,tunsten,carbonated steel,vanadium and chromium togeather to make a alloy

So after some corrections, this is her abstract. Can anyone suggest any further corrections? Thanks! (btw she went to a high school research program) I'm thinking of changing from "is created from" to something else, like "comes from". I'm also thinking of adding some conclusive statement at...

Are you the same Fred Garvin who is on the waiting list to play Razz on Full Tilt?

I went through some old vector problems and did over 100 but I couldn't get my hands on this one, thanks for taking your time to help me out. Problem: If vectors A and B are added, the resultant has magnitude A. If the two are subtracted, the resultant has a magnitude 2A. If A = 4 what is B...

Heya i have this question over here... i have done the first part of it An open tank weighing 1000 N contains 0.6 m3 of water. Calculate the force required to support the system against gravity. Answer is 6886 .. the calculation i have done is convert the 0.6 meter cubic into m.liters and...

A venturi meter with a 75 mm diameter throat is installed in a horizontal 150 mm diameter pipeline. The pressure at entry to the meter is 70 kN/m2 gauge and the pressure at the meter throat must not fall below 25 kN/m2 absolute. Calculate the maximum flow for which the meter may be used, given...

Hey guys please help me solve these questions !(Electrical(electronics) Engineering) ok guys, I was on a vacation, and when I came back the professor just handed out an assignment, and I have no clue about it ! Please please, I really need your help on this. The assignment is due on the 28th ...

Hey, great site friends! )

hey i have finals tomoro and i have to make a poster out of this problem .. but i can even do this problem ..i v tried it tho. QUESTION... A police officer is sitting at the side of the road on a motorbike with the engine running, monitoring motorist's speeds with a speed gun. The...

[SOLVED] hey i thought that this is tricky but who knows hey guys iam trying to solve this question and this what i do have https://www.physicsforums.com/attachment.php?attachmentid=11650&stc=1&d=1195680084 *i know that the radius is 1 *then the x = 0 *i think this question can be...

Hey all...HELPPPP! Homework Statement Homework Equations The Attempt at a Solution this one if you have the time.. :D thanks http://img412.imageshack.us/img412/4605/untitled2zz2.png

Hey, I'm new here and need some help with Dot Structure homework. Hey everyone, I was looking for help in the net, I saw the forums and felt like joining in for some help. I got some homework our Chemistry teacher gave us today, but I'm kind of lost in here as I am not goo in chemistry...Here...

Hi all, I'm new to this site. I'd thought I would introduce myself here. You know, you should have an "introduce yourself" thread on this site. Well, anyway, I'll introduce myself. I'm 19 yrs old, live in New Hampshire, and I'm still a student in High School. I'm really big into science...

Hey ,if we need to calculate time dilation with an accelerating frame of reference,cant we simply use the lorentz trasnformations and use instataneous velocity in place of relative velocity? Alsousing einsteins derivation of the lorentz transformations we get 2ct=0 Now how do we explain this?

shear force diagrams simple stuff hey!? hey guys this is probably very straight forward stuff for u but i have an example question on a loaded beam. there is a UDL, 2 pure couples and 2 fixed points. now how do i do the shear force and bendin moment diagram for this really lookin forward...

Hey guys I have an interesting topic for all of you who interested. From the EPR paradox we know that principle of non-locality indeed exist and yet it is suggests that information cannot be transferred between A and B due to quantum mechanics uncertainty principle since information gets...

hey...please answer my qustion can someone please solve this paradox related to the twin paradox?? jane continues to be on Earth and dick goes to a planet 20 light years away at a speed of 0.8 c. Every year dick sends a message to Jane. Now for Jane due to time dilation the time taken by dick...

"Hey, I'm back!" the Madonna Screamed Actually, this was not a reference to myself. Rather, it refers to the fact that yesterday, the two paintings "Madonna" and "Scream" by E. Munch that were stolen two years ago in a daring raid, were found again with only minor damages, according to the...

I Have A Project To Design And Construct An Active Band Stop Filters I Need Circuit Design Please Thanks

It mostly concerns Janus, as I remember he submitted a picture of NASA spsace mission patches somewhere to the contest, but anyone who knows would be divine as well. [comments welcome as well] How do you get the patches? (Here some other well known questions.) I received a mail ad to buy these...

I noticed that there are no.[SIZE="1"]women around,[SIZE="2"] so put your feet on the table ,break out the beer and the sun news paper,put the motor racing on and party:approve: :approve:

jus wana say wassup to everyone :smile:

You ever watch mythbusters? right now I'm watching the giant slingshot episode. It worries me that I am seeing exactly where they are going to run into problems before they run into them. Not because I forsee the problems, but because I've made them myself.

Here's the item needing to be proofed (this is not homework, but I'm very interested in it). Show that for each odd prime number y, there is exactly one positive integer x such that x(x+y) is a perfect square. Thanks for any help/leads, etc.. -Steve

Lately I've been using my mp3 player to listen to lectures given by college professors. Each course is divided into 12 to 48 lectures each one 30 to 60 minutes long. Which is about how long I sat in most of my college classes. I just wish I could have gone through college as fast as I'm going...

Hey, here is a question I couldn't figure out. I think it's actually really easy, but the wording confuses me. A recent survey showed that the population, P, of Victoria is growing at an annual rate of 1.1%. Let P0 represent the population on January 1, 2001 and let t represent the time, in...

Hey, I'm new! Just wanted to say hi! o:)

hey guys i need help in matrix

Wow, am I in the right place? Physicsforums sure has changed. Nice seeing the familiar faces. And the thousands (Literally! remember the how long till 2000 members thread? Wow) of new members. See you guys around.

Assuming it exists(and upon checking the answer is 1, but I'll be damned if I can get it) (e^x * tan^-1 y) / y the limit as (x,y)->(0,0) I can't find a path where the denominator isn't 0 or cancels out that goes through the point 0,0, so I can't, you know, solve it.

Hey everyone. New member here. Thought I would say "howdy." I'm not really scientific though I did use a stripped down lamp cord to jump start my girlfriend's cat's heart when it passed out, don't know if that counts since it was pure instinct but now she thinks I'm a hero and the cat doesn't...

HEY ! I AM CURRENTLY STUDYING FOR ENGINEERING AND HAVE LUST FOR ROCKETS. I WANT SOME GOOD INFORMATION ABOUT ROCKET DESIGNING . PEOPLE HELP ME OUT HERE. :biggrin: :!) :wink:

I must have sucker written all over my face. Today when I went to work the plan was to have me using the GPS while the guy I work with used the robotic to check some construction that was taking place right underneath some power lines. After we started working he called me on the phone and said...

a 55 kg high jump athlete leaps into the air in attempt to clear the bar, at the top of the leap the athlete has a total mechanical energy of 3x10 to the power of 10 joules and is moving at 8.33m/s. Calculate the gravitational potentional energy. what the hell? how do i get my height...

Psssssst...hey you...yes you...click me So you've clicked me and you're currently reading this sentence. However, the sentence above did not exist while you were still reading it, because you did not get to the fullstop. This means that the above sentence was false while you were...

If an arrow is shot upward on the moon with a velocity of 58m/s, its height in meters after t seconds is given by h=58t-0.83t^2 find the instantaneous velocity after one second...can u post ur work?? and explain this to me...thx in advance...

Thanks .

Hey Quick Question! will plasma retain a electro-magnetic charge after conduction? And if so any ideas as to the strength of the charge?

I'm trying to decide if it's worth my time to make my undergraduate GPA super high My cumulative won't get much higher than 3.2 even if I get 4.0 for the next two years, so I won't be able to get into any honors societies, and the only reason I can see to bother temporarily memorizing every...