Hello Definition and 276 Threads

At least that is what I am told when I ask it around here... How long would it take to go get to 45 miles per second at human tolerable acceleration? I am not a math whiz obviously, but I have some questions that get me some really strange looks, and no answers. I know that currently...

Hi, my name is Josh Would an actual engineer answer the following questions? What do you do in your job? What do you like about your job? What are the cousrses and reqiurements for your job? What was on project you really liked? Do you need more people in your field of...

Hy, i am back with my annoying questions about this and that. Could everyone tell me why the frigging dipole have an electric field that drops with 1/r^3? i mean, if i am far away , i should feel no electric field, you know, q2 = -q1 , so they cancel, but i feel (q1 q2 k)/r^3.What the HECK?

Express as the product of disjoint cycles: a. (1,2,3)(4,5)(1,6,7,8,9)(1,5) b. (1,2)(1,2,3)(1,2) I now how to do in 2 row permutations, with right to - left. can anyone tell me , how to express it without transfer it into 2 row permutations. One more question, How do we find out it's...

Hello people, this is my 1st time posting in the forum and its very nice. Well the thing is that i don't know what career to choose, I would like to be a engineer or something that have to do with science. I like Isaac Asimov Sci Fi (Sci Fi in general) , love thinking about future of science...

Hi all, I'm new here. I'm reentering college and I'm looking to major in Chemical Engineering. I have a few concersn and I was wondering if someone could help me out. I was wondering if anyone here knows any universities that offer academic help for higher level Chemical Engineering...

1.Marzena 2.Integral 3.Jasonrox http://img30.imageshack.us/img30/6757/img0676k.jpg 4.Borek 5.ZapperZ 6.Matthyaouw 7.GeorginaS 8.Turbo-1 Contest Thread

Hello stranger! Photos of people you don't know. Contest Rules: 1. Any digital photo or digitally-scanned photo relevant to the theme will be accepted within the contest period. In case there's a gray area, or you're not sure if the picture is suitable, check with me first. 2. Please...

In order to get this final equation of Displacement and time: v(t) = v_0 + \frac{1}{2} a t^2 How would I come about actually making this equation? Would it be a combination of the simple acceleration equation and Delta x equation ... with so algebra. BOOM answer? Thanks for your...

Hi i Would like to solve the the following eqn using Matlab Since I am new to Matlab, I would request u to help me in this regard (∂^2 T)/〖∂r〗^2 + 1/r (∂T )/∂r+(∂^2 T)/〖∂z〗^2 = 1/α (∂T )/∂t+τ/α (∂^2 T)/〖∂t〗^2 - { (1+δ(t) )-(1+δ(t-tp) }*IoKa/k 〖exp( - 2r/σ^2 〗_^2)exp(-zka) where δ(t) =76ns...

Could not find an intro thread so I decided to say hello here first. Have been reading this forum for a long time now and decided to join today :) Have learned allot from this forum and hope I can contribute as much as possible. S77

Hello everyone. I'm Nik Ignjatovic. I'll be 16 on the 22nd of March. I am very interested in Quantum Physics and anything related to physics. Right now I am working on getting my associates degree while in high school so when I graduate I will be able to work on my Masters sooner. One of my...

Hello All I am Robert Brown.I am here to share my views and thoughts about Sustainability,climate energy and to actively participate in all the board activities . I am sure to have a great time with you all

Homework Statement integral from -1 to 1 of 3/x^2 dx Homework Equations The Attempt at a Solution Limit t --> infinity integral from -1 to t of 3/x^2 dx + limit t --> infinity integral from t to 1 of 3/x^2 dx Limit t-> infinity -3/t - (-3/-1) + Limit t-->...

Hello you guys It is my first time to come here. Now i am happy and exciting. Because i feel the forumus will be my home. I like the lonely boat,find a bay. I come form China My engilish and my physics are poor. But i love physics,and work hard for my dream. Make a long story...

iam tito in computer since from egypt in future academy egypt and i have 5 subjects in first term in the first year so i want some one to help me in Physics we have static electricity and coulomb law & electrostatic field & electric flux & gauss's law and more please help me...

Hello! Could anybody give me an idea about this proof? knowing f_{i}:X\rightarrowR i=1,2 to show whether f_{3}=min{f_{1},f_{2}} is continuous! Thanks in advance, Regards

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

Starting from rest at the top, a child slides down the water slide at a swimming pool and enters the water at a final speed of 5.00 m/s. At what final speed would the child enter the water if the water slide were twice as high? Ignore friction and resistance from the air and the water...

kE=gzE=mv²/2, pE=mgh, F=GM m/r² and F=kqı, q2/d² Anyone knows or familiar about this formula? Do you know how to proof this formula?? Thank you^^ p/s: For not to make anyone confuse, this is not my homework :)

I am Italian and my name is Andrea! I like Math and I am happy I found this forum! Sorry for my mistakes in math and English language! I hope I can meet some friend! Thanks everyone for reading this! - Andrea

Hi. I'm in a computer lab in Kunming, and just wanted to check in and see how everyone was doing. Jeans

I'm a high school junior right now( yeah! almost to become a senior). and, I want to be an architect, yet I'm not sure which kind of architect though.. So i have questions about master degrees and etc. I've been researching for colleges and I wasn't sure what those mean, Ph degree ...

The pup has arrived so I thought I'd make a new thread. http://img129.imageshack.us/img129/3850/img2300mx3.jpg http://img229.imageshack.us/img229/7870/img2315ma8.jpg This is Freija. :smile:

Hi, I'm a sophomore in high school at the moment so I don't know much math, however it is my favorite subject..but anyways today we were doing reviews for our EOC (end of course) test for in my geometry class and I came across a funny problem. I want to ask you if this problem makes sense the...

Hello , I am new here, my name is Aleenka and would like to say hello to all of you :)

I did not see an introductions forum or thread anywhere, so I guess it is alright to post a new thread. If this is not permitted, please feel free to delete the topic. I found this site looking at http://deferentialgeometry.org/ (as little as I understand it) and this looks pretty nice. It...

1. Homework Statement [/b] Let Z(t)=(3/4)Sin(2π/3t) be the equation for a SHO in the Z diection about z=0. 1. what are the amplitude, phase, frequency, angular frequency and period of this SHO? 2. what is the maximum velocity? what is the maximum acceleration? 3. when Z= 3/4, what...

I started learning C not long ago. Like most people I started with "Hello World". I relised that it closes itself unless you tell it not to. I have this code #include <stdio.h> int main(char *argv[]) { printf("Hello World!\n"); getchar(); return 0; } It makes it close when you...

Hello, My name is Mike. I am new to this forum. Just saying helo. ________________________________________________ phentermine without a prescription q [/url]

Hello it's seems a nice forum, I'm asking for a friend of mine, he have a Nuclear physics theory he would like to publish , so people could give their opinions, is there any good website were there are qualified people who could give me expert opinion for the theory? I've search a lot and I...

Hello smart people who I do not know. I'm kinda new to computer science, and I need to start learning a language/s... I was hoping to learn HTML first because I wanted to start a website, so could anyone give me a link or name of a book or something to help?

Homework Statement You know grey paws(GG or Gg) is dominant to pink paws(gg).You also know that brown eyes(an x linked trait:BB,Bb, BY) is dominant to green eyes (bb or bY). You have a male dog with grey paws and brown eyes and a female dog with pink paws and brown eyes.They mate and have 8...

Hello Physics Forum :) Well I just joined. I've browsed this forum countless times and finally I had some time to register. I'd like to introduce myself. My name is Eric and I just graduated high school this past year. I'm very interested in going to college when I get some money saved up...

I am currently a college student who has always had a love for math and science. I was recently thinking and discussing with some of my friends, how mass increases with speed as it gets closer to the speed of light. Then I started thinking about the concept of speed of light and how it is the...

Hey all, I found this forum a while back, and just re-found it today. I took regular physics last year in high school, and found it simple. So I took a big step and took the hardest class my school offers: AP Physics. I had my first test on Friday, and boy was it hard. But I don't think I did...

Hi to all fellow members, I am a teacher from india. Besides teaching, i maintain websites to provide free guidance to CBSE students of india. CBSE is the central board of secondary education in india. Hope i will learn a lot here and help others. Best Wishes to all.

Hello, I am currently planning on constructing an electromagnet. Its purpose is entirely for entertainment. I was hoping to make two of them that I could attach handles and switches to so they could be used for hanging/climbing underneath some random thing. If possible, it would be useful if...

Hello! I am thirteen and self studying real analysis... I'm wondering where to go after this; kinda looking for a general outline of what to do from here on out. Any help is greatly appreciated. Thank you.

Must a physical law be able to expressed by tensor equations (forms)? If there is a quantity like finite rotation, which cannot be expressed by any tensor, then there is no corresponding tensor equations for it? What is the limitation of tensor analysis then?

well, I found this place searching for a method to solve a laplace transform as I'm a little stuck on exactly how to do it, So I'd like to say hello, and I hope I can be of some help for someone else in the future. also, do posts here go into a moderator queue before appearing , some other...

hello there, i was just wondering the different types of physicists there also I am a bit confused on what each type would work on and what type of things they would do. Also i was just wondering if you think I am silly or not for trying to aim to become a physicist or try to succeed in it...

Hi I just joined the forum and wanted to thank everyone about your informative posts. I am currently studying the mathematical foundations of the general relativity and may need some help. My first question: Is there a way to perturb the fundamental tensor to obtain another metric...

Hiya all. I stumbled across this site whilst doing some research for a telescope and it looks like a wealth of knowledge here. Ive posting the astrophotography section as this is an area I want to expand into. Ive been into astronomy for a few year and my partner got me a celestron 675...

Newbie saying Hello and an unusual question... Just thought I'd say Hi and ask if I can post a rather odd question. I've not done any academic physics since leaving school at 18 (I'm a Brit) but think that knowing the basics makes life a whole lot easier. Physics stops your shelves...

Hello, I've been looking into going to villanova. Does anyone know how the physics program there is? It looks pretty good from what i can see, but i was just wondering if anyone has had any experience or more knowledge of it. And what about graduate schools to get your Ph.D. What are some...

Hello physicsforums! i am a newbie here and like this place very very VERY! hope not to bother you too much ;)

Hi everybody, I'm new to this. I'm about to start my sophomore year at Harvey Mudd. I have a lot of questions about what courses to take, what research to try out for, etc... Perhaps I could get some input? First, research. For someone who wants to go to a top graduate program (like top 10)...

Hello Again---What did I Miss I haven't had very much free time lately and regret to say that my reading in the realm of physics has been very lacking lately. Anyway I was hoping to find out progress has been made in regards to String Theory. I have gotten the feeling (could be compeltly wrong)...

Hello! I'm from a region that is far away from you – from Siberia. Unfortunately, I (neither my University) do not have access to modern scientific information. May I ask anyone to help me to get the following articles? 1...