Physics

This is a quote of somone on another forums explaning to the other forum members what I ment when I was trying to discribe an anomile I encountered while playing with magnets The orriganal post is here http://www.steorn.net/forum/comments.php?DiscussionID=17702&page=1#Comment_260721 Please can I have some feedback

A Basketball ball is dropped onto the floor.What force causes the ball to bounce?

Formula is an educative program created to help in assignment and other educational purpose that may require calculation. Formula was mainly created for physics calculation but can also be use in other calculative areas. Formula can calculate any number of unknown variable, showing you all the workings, step by step till the final answer. http://www.datafilehost.com/download-07c92031.html

I saw a graph in a book on Chaos theory and it showed in the first third of the graph lines moving horizontally; then there was a break(empty space) in the second third of the graph where the lines disappeared; then in the third part of the graph, the lines reappeared. Can you tell me what this is called; even better, can you show me a picture of it; even better, can you tell me more about it? Does this have anything to do with the glycerine/ink experiment where the ink disappears in the glycerine and then when turned the other way, it reappears again? Thank you.

Hello, would anyone have papers for this, or topics I need to know to prepare for this?

Hello everyone, When you go on a boat and use the paddle and displace water molecules you create low water pressure right? Then why does the boat move forward? I know water would flow from high to low but how can you specfically know that water would fly from high to low in forward direction, can't it happen in any direction? Also why does paddling one side make the boat turn? Thanks!

If gravity is strength 1 then EM is 10^39... correct? what is the strong force compared to to those two? gravitys stength is an inverse square of the distance. what is the equivelent notation for the strength of the STRONG FORCE? wasnt sure if there was a shnazzy relationship to the area of effect were gravity has a relative fall-off of 10^39 while the EM has a fall-off of 1 and etc for the strong force. Hope i explained the well enough... I wasnt sure how to phrase that to search the forum.

Magnetic fields do not seem to neutralize like electric fields. Magnetic fields always seem to couple without decrease in overall magnitude, so how non-magnetic materials can manage to cancel all the magnetic fields and stay magnetically neutral? To simplify the situation let me rephrase this using 'permanent bar magnets' instead of electrons, and their magnetic dipole moment, as a source for magnetic fields. So, in other words, is there some spatial arrangement of permanent magnets that can neutralize their magnetic fields?

Why does air act as such an effective insulator? Does heat have to 'adapt' or something when it passes through different materials? Are the particles too spread out for good kinetic energy and then heat?

I was writing out a setting overview for a story I'm writing, and though all of the technology in it is fairly beleiveable (No warp drive, lasers, teleporters or anything) for what is essentially a space opera that I've been told is like an end of the world-ish version of FireFly (Never seen it, so idk), there is one thing I'd like to check: What would happen if a chain or something were attached between two astrological bodies, like the earth and moon, or two different planets in one solar system..?

Hi everybody, here is something I have seen in a geophysics text. I thought I was proficient using the einstein notation convention but I cannot follow this expansion of the wave equation. Note, I have not included the entire wave equation here, it is just the portion of the expansion which I am having trouble following ∂i[ λδij∂kUk ] = ∂iλ∂kUk + λ∂i∂kUk here i,j,k are indices. δ is the kronacker delta such that δij=1 when i=j and zero otherwise. ∂ is the differential operator. U is displacement. λ is the Lame parameter whic is a constant. I would have thought that ∂i[ λδij∂kUk ] = ∂iλ∂kUk Can someone please explain where the second term comes fro…

Hello, I've heard lots of credible sources pointing out that part of Einstein's theory of relativity is false (in the case of singularities) but I have found nothing in writing to prove this. Can anyone provide anything?

If all the people in the world started running to the East side of the Earth; would the Earth's rotational speed change? ?

Hi, Does anyone know of any good audio lectures on the web (of course free!) on either the standard model, string theory or M-Theory or QLG? Thanks for any help you can offer! Rusty

anyone done the physics science in the news coursework: does the uk need new nucllear power stations? im stuck and i dont even know how to start or what to do HELP!

In the chemical bond article, Wikipedia states that due to the matter wave nature of electrons and their smaller mass, they occupy a very much larger amount of volume compared with the nuclei. But why is that? Why do electrons occupy a very much larger volume than the nuclei because of their smaller mass? What does their mass have to do with the volume they occupy?

Solid metallic hydrogen consists of a crystal lattice of atomic nuclei (namely, protons) separated only by a dense electron soup which flows between them. My question is: How are the atomic nuclei bound together? What keeps the nuclei in a crystal lattice structure?

Hello, my godmother's/aunt's husband is working on developing the MRI scan. I am going to have a talk with him quite soon about this, since I'm hugely interested in this topic but could anyone please supply me with background information or progress? I can't seem to find any. I apologize if I do not type back in return lengthy replies, but my space bar key is broken, forcing me to type such a text in an extremely large length of time. ~Cyf

The title pretty much sums it up. If you rub a balloon against your jeans, it'll stick to a wall, but eventually fall off. Can the same thing be said about magnets?

Although it is always nice to meet new members your post would be more appropriately placed here, and not in the physics forum.

An international team of researchers may, just may, have made a radical breakthrough that could rewrite physics and chemistry textbooks. They claim to have discovered a naturally occurring element with an atomic number (number of protons) of 122 — 30 notches on the periodic table ahead of uranium, long considered the heaviest naturally occurring element. For decades, physicists have been making artificial elements in supercolliders, only to see most of their creations disintegrate within a short time. Most elements above atomic number 100 are inherently unstable and get progressively more usntable as you travel upward. The highest discovered one, ununoctium or…

if one where to (hypothetically) take a cathode ray tube from a television set, remove the front, put it in the necessary vacuum etc etc and put a piece of metal in front of it, would this kind of cathode ray have the power to melt the metal, in the same way the electron beam welders do?

I don't know about the rest of you, but I'm stoked to hear that Physicist/Author Michio Kaku's book "Physics of the Impossible" will now be broadcasting on the science channel as a regular program. This was my first book on physics and I read it cover to cover. And as a follow up to this, do any of you have propositions for impossible inventions, ideas, your own theories...et cetera

a recent substitute was trying to use the face that no two snowflakes are alike to prove that some higher power or energy was acting upon it. can somebody explain why snowflakes are like this?

Not sure where else to post it, seeing as the Physics GRE includes a variety of physics subjects, so here goes. I will soon start my senior year, and so I need to start thinking of the GREs. I am probably going to start studying for my Physics GRE soon, if not to take them before the stress of the senior year then at least to give myself enough time to practice. I downloaded the existing exams (there are about 4 online) and I will practice them, but I can't find a good source to get a bit more preparation as to what the exam is like, what to expect, maybe some methods of trying to deal with the time limits, etc. Does anyone has any good advice or resource to o…