Forum Definition and 388 Threads

Hey guys, I'm obviously new to the forums and as well new to Physics. I'm currently in grade 11 and taking Physics. I'm very interested in it and hopefully this forum will help me develop a greater interest and more knowledge on this subject.

I did not see a forum for book recommendations or reviews. Would be helpful for the student in me.

MATHS INTEGRATION, Wont let me post in calculus forum :( Homework Statement Integrate 1/(sqrt(2x-x^2)) between 0 and 2. Homework Equations The Attempt at a Solution I have no idea what method to use to try and integrate it, I've played around with it for hours but it ends up...

I have to say, this is the most fantastic website that I have ran across in a long time. I particularly like the helpful (seemingly so far?) community and in-depth coverage of virtually every general question I have had in the past year! I was reading through a thread that linked to an article...

Hello everybody this is Clarke new to the forum , hope u all welcome me :)

I was wondering if anyone has recommendations for a philosophy forum, in particular one where ethics is discussed -- theoretical ethics rather than bioethics or other applied ethics.

Hi all... can anyone help me thru these questions... a) % of thinning allowance calculation of tubes while expansion b) standard drwg. for tube to tube sheet weld joints c) Inner Radius (Min.) calculation for floating Head Cover In AES Heat Exchanger d) Selection criteria for...

I'm using this data to get an idea of how long it might take to get a thread there answered. So please, for the sake of accuracy, don't joke. I'd imagine that since summertime is here, not many people go there.

Hello friends, I am having some trouble with a particular statement an author made in a book. Despite being a statistics question, it is at its heart, a calculus question. Perhaps someone here with a better understanding of the subject can help, because I'm not convinced the matter has...

This is an outside the box/critical thinking game. I was introduced to this in a logic class. The idea is that I state a short story, and the participants have to "fill in the blanks" by asking yes or no questions. Note that the literal answers to yes or no questions can be very misleading...

Homework Statement Express the function cosh(2x)+2 sinh^2(x)= in terms of exponential functions. Homework Equations The Attempt at a Solution i have an answer but I am not sure if its right can someone check please. =1/2 (e^2x+e^(-2x) )+1/2(e^2x-e^(-2x)) if this is right i need some help...

I hope you can help me with this problem. A few days ago, I began a post with a LaTex equation in it, but never completed the post (I got the answer I needed). I'm trying a new post today, and no matter how or what I enter as LaTex, when I preview the post I see the equation I tried to use a...

Homework Statement A 3.80 kg block is in equilibrium on an incline of 38.4◦. The acceleration of gravity is 9.81 m/s2 . What is Fn of the incline on the block? Answer in units of N. Homework Equations The Attempt at a Solution FgsinΘ=mgsinΘ=3.8*9.81*sin38.4°=24.04...

I am a graduate of a 4 year degree in Physics education and participating into this forum is right for me. Hope to participate soon in the discussions here.

Hi there, Many of the problems on this part of the forum simply boil down to "I don't know how to solve the ODE: <some strange ODE here>" I kind of forgot how to solve many of these problems myself, so I've just been giving people the answer from matlab's dsolve function. Is this...

Anyone notice that the Richard Dawkins forum has suddenly been terminated? Not only has posting been disabled, but the whole thing will be deleted within 30 days. It has almost the same number of posts as physicsforums. Its causing quite some anger among its members. Heres the story...

I find that this forum supports LaTex which is awesome that we can type formula.But what version is it? I need to know because I don't know which translator to choose when using MathType. Thanks

Homework Statement i have quadratic form x^2-xy+y^2 how can I check if this form has always same sign (+ or -)?

Tonight's episode of Naked Science on the National Geographic Channel.

I’m not quite sure what I’m doing on this forum. I was sent a gift subscription to a science magazine and was so delighted with it; I gave a grandson a subscription to the same magazine. We get into lively discussions regarding the contents of the various issues. He challenged me to read Stephen...

Google Tools... I want to know if PF forum members regularly use: Google, alerts... http://www.google.com/alerts" and if getting e-mailed links has helped you find or research information (Note: to busy college students...), or to keep abreast of breaking news ? Have you tried...

Hi, Do you know any TI-89 support forum? Thanks.

Forum Game -- What's that movie? Similar to the landmark game. First to correctly identify the movie posts a new pic for a new movie. You are then responsible for giving clues (after a couple of days or so if its really a stumper), and deciding the next winner. Here's an easy one to start:

Dear all, Unfortunately, we have just learned of the death of one of our members, negitron. Since he was a valuable contributor in this forum, I am posting this announcement for those who might not have seen it in the General Discussion forum. Feel free to add your thoughts, if you wish...

I'd like some pointers to a good forum where I can go to ask general computer questions - usually to do with my network setup. According to Linksys Tech Support, BOTH my Linksys wireless routers got pooched on the same day. My network is old enough that it may be time to replace them anyway...

I'm new here.. thanks for accepting me in this forum. I would like to meet a lot and know a lot as well.. looking forward. :)

are there more advanced forums than this for astronomy/cosmology? I asked a few questions without reply on here so I guess I need higher level forum.

I need help Downloading ALL attached pictures of a forum, the pictures are posted on the website under \attachments. I have tried using Extremepicturefinder and picture ripper, but both programs have trouble following the links and threads. All of the pics are posted under a single category but...

I wanted to know in depth in piezoelectric sensors,their EMCF,different materials,groups working on material science...As Well As on FERAMS I got some sites like piezoinstitute,csa like that can anybody please help me to find some more...

I hope this warrants its own topic, but we'll see. I have spent about 4 years on here, mainly in the philosophy forum. I have had many great discussions on varied subjects, but I am beginning to doubt myself. I searched through all my old topics, and I found that a bunch of them had been...

Not too sure if this is the right place to post... any good optics discussion forum that one could go to? any recommendation? Thanks

This seemed appropriate material for this Forum, I wasn't sure what section. :-p http://www.bryanappleyard.com/blog/2008/04/teaching-maths.php

Hello everyone! I'm new to the board, so thought I'd take a moment and introduce myself. I have a degree in Liberal Arts, but like so many of us, the first time I gazed upward on a dark night and wondered in amazement, I was hooked. I have enjoyed perusing so many of your contributions, and...

Firstly i would like to apologise for invading your forum with newbie questions... Thanks for your time! I have been researching but as yet have come up with little information. I am currently doing my masters in visual art. The art work I make often involves different levels of interactivity...

Hi, everyone, please give me some mechanical forum website, thanks!

Hi everyone, I just wanted to let you know about this new addition the Philosophy Forum guidelines. https://www.physicsforums.com/showthread.php?t=47294 The intent is not to become obnoxiously strict "grammar police" here, but to create standards that will facilitate communication. We have...

I encountered some of you guys on B forum, just thought i would say hello.

hi anyone here use the ciddor equation before? supposedly there's an equation linking refractive index n of air to the wavelngth of light. its an equation that i need, but for the life of me i cannot find it as its often on websites that you have to pay for and i have noi money. would...

This is a reply to a comment made in the cosmology forum. That's not correct. Do you really believe that physicists are that dumb? The real story goes something like this: The speed of light is a constant in the real world. Therefore, we define a mathematical model in which the speed of...

New to forum and having major problems with couple problems! 1)Two cars are towing a housing unit to a new location. The sum of the forces vector F A and vector F B exerted on the unit by the horizontal cables is parallel to the line L, and FA = 3200 N. Fa(angle)=48, Fb(angle)=32 Determine FB...

so, since this a physics forum, i figured most of you guys are nerds, don't have much social lives, but have successful careers, which I desire. For those of you who struggled during your school years, how did your relations with women fare after college? im sure most of you adults have...

Whenever I do a search on the web about something specific in C++, I get like tons of hits from many different forums. I want to join a forum that is like specifically for programmers to communicate and where there are lots of people who answer questions about C++ and Java and other languages...

Cosmology forum has an educational function, among others, and that will work better if we try to agree on terminology. I'm proposing some usages here---others may wish to offer different ones---a mentor may eventually write a sticky thread of suggested terminology. At least we can get our...

Hi, I'm not finding group theory listed in any of the other math forums on physicsforums.com... so I'm wondering if it belongs here in the General Math forum or in another?

its more of a logic question its used in my country in the "asat" exam i need to solve this kind of in a minute an a half the question is : mary bought ten books 5 pairs of books each pair of books has its own colors a yellow pair ,a purple pair ,a black pair ,a blue pair, a red...

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 am first time user of LATEX. I have LyX editor where I am able to create LATEX documents. But I couldn't find any clear solution for pasting that LATEX content into my posts in the forum. Is there any simple way to copy LATEX document from the editor to forum posts?

Hey guys, I'm new to physics and to the forum. I've always been fascinated with things that are inexplainable such as time travel, levitation, and more recently creating power from what I call "Nothing" which we know it's not true, but it sure seems like it (Using the concepts and ideas...

You can go to this link and find out how many recent posts you have made on the forum. Just enter your user name. http://boardreader.com/sp/Physics_Help_and_Math_Help_Phy_14465.html For some reason I associate sites like this with black helicopters.:cool:

Wrong forum! Sorry!