What is Hello: Definition and 271 Discussions

Hello everyone, this is my first problem dealing with Kirchoffs Rule and I thought I did it right...here is the circuit... http://www.webassign.net/hrw/hrw7_27-40.gif the info is the following: In Figure 27-40, the resistances are R1 = 1 , R2 = 2.2 , and the ideal batteries have emfs E1 = 2.0...

an electron is accelerated from rest thru a potential difference of 400v. what is the final kinetic energy of the electrom how much work is requires to bring four point charges eacg wit q= -8pc from infinity to a distance of 3nm from each other your help is greatly appreciated

I need badly some materials or instructions on how to simulate fluid flow or similar/related things to finish my research in the next 3 months...Do you know where I can find some to read, or places where I can download source code ?? Anything about it is really fine, how to simulate is also...

I am a colege student, we are going to have a test after holidays, i am worried because I still don't know a lot of things. Could you tell me how bone is created in human ? I know there are tow stages bone is formed: membrane, and endochondrea. I am still stuck at how to say these two stages...

I think you're going to hate me for talking again about the vacuum. Yesterday I saw a TV program about CERN. A physicist (spanish by the way) talked about the vacuum is not so vacuum as we could think. Let's suppose I have a reservoir in which it has been made a high vacuum. A manometer...

Hello every one I am just new here and new to pyhsics...so just want to say Hello! I've got a question if anyone could help Id be so grateful :smile: a metal has youngs module value of 1.9*10^11 calculale the stress needed to produce a strain of 1.44* 10^-3... could someone please explain...

I'm very new to this. I know that to find the angle between two vectors we use the dot product, but what about finding the angle between a vector and each of it's axes? for example: A = 3i+2j+k, How can I employ the dot product when there is no other vector? Thanks and keep posting! Amil

Wellcome to PF spacecowboy. regards marlon

Hello all! I am so glad that a forum like this exists. I absolutely love Physics, Philosophy, Mathematics, and Astronomy and have longed to inquire upon some folk who might know more than I do. I just want to introduce myself for a second. My real name is Kevin and I live in Detroit, MI. I...

i have an easy problem that i can't solve if you throuth 100g of ice at a tempeture of -15C in a glass with 200g of water at a tempeture of 25C. what it the final tempeture of the system? the system is isolated, no heap can get in neither get out. i try to solve this problem using...

I am trying to learn ways of saying "hello", "good-bye" and "thank you". in as many languages as possible. So far this is what I've got: 1.) English: Hello Good-bye Thank you 2.) Amharic: Selam Ciao Amesegenalow (meaning...

Hello Republicans... Things I like about George Bush: Tax cuts. Late term abortion bill Holding Iraq accountable Removing the Taliban Support for a two state plan inthe middle east Bringing intelligence agencies under one roof Focus on unjust Affirmative Action Programs Push for Free...

Hello sci.physics.strings! I'm Warren (aka "chroot"), co-administrator of www.physicsforums.com, a site devoted to enabling global scientific communication for both professionals and laypeople. As part of our service to the professional physics community, we are providing a web-based...

Hello, my name is Hessam (self-evidently), i am 15 years old and have an ambition to study physics throughout my life. I have allready read a book on general physics, and one on einsteins theory of relativity, and because of my will to pursue this field, i wish to major in it when i go to...

Truth is stranger than fiction! When I pictured the streets of New York, with tens of thousands of people walking around with their finger stuck in their ear... You just can't make up stuff this good! In five years it will seem natural to stick your finger in your ear to answer the...

howdy. I'm not too good at physics, and i have a lab due tomorrow. it isn't too complex of a problem, so help would be appreciated. if you are willing to help, say "asyemptote" and i will type the problem. thanks a bundle

I am not a rocket scientist, I have never taken calculus, I do not have a degree of any sort, I have dropped out of high school, I can bearly spell words correctly, and I'm just a young punk kid. But I do have many questions that have been bothering me incessantly since I was 15 and took physics...

Good afternoon, Hello from gaithersburg maryland. I am new to this fourm. I work in the health physics field.. If your ever in gaithersburg drop me a email will do lunch..

Hello all! I'm a neuroscience pre-med major. I'm glad to be here, especially now, because I just completed my two semester series of non-calculus physics. Being a science major, I have a rule for myself. I don't buy any books on a given scientific subject until I have finished the...

First off, I'm new to the board so hello! I hope to be a regular. Now that that's out of the way: Is there any way to change the wavelength of monochromatic light (other than the doppler effect)? Thanks!

Spotted this board and decided to register...I may or may not post often, it depends... How are you? Are you friendly? What are your qualifications? Cheers... oh I like your smilies...[zz)]