Break Definition and 281 Threads

Does motion break existing symmetries? Observations suggest that the observable universe is spatially flat and, on the largest “cosmic”scale, highly symmetric. On this scale it is modeled as always isotropic and homogeneous. In this situation Birkhoff’s theorem tells us that “exterior” matter...

When the Earth first formed there was a single supercontinent. Why did the ocean ridges appear and break up this continent into smaller units?

How would you go about calculating how much a putt would break over a given distance without neglecting friction? EDIT: I've realized this would be more appropriate in the coursework section, unforunately it's too late now.

A .208-kg toy whistle can be whirled in a horizontal circle of 1.00 m radius at a maximum of 3.00 rev/s b4 the string breaks. What is the force needed to break the string. I don't know how to start this problem but this is what i got. first i found frequency which is 1/3 and then i got...

Do fish---- Break wind, when looking at them in aquariums i have never seen bubbles coming from that end, so may be their digestive system works differently.

I just completed 1st year engineering program. i have no summer job, i am bored, what to do for this month until school starts again.

At the end of this lesson. http://mfile.akamai.com/7870/rm/mitstorage.download.akamai.com/7870/8/8.01/f99/videolectures/wl99lec6-300k.rm Why does the lower string break, and then the upper and finally the lower one again? Has it anything to do with the speed he is pulling with? Look at the...

Hi, all; An interesting question was posed this morning by the science correspondent on Canada AM. Apparently, it's also in New Scientist magazine. He claims that it's unsolved, and I figured there's no better place than PF to go when searching for engineering solutions. I'm putting it in GE...

It's Thursday. Tomorrow is the first day of an 11-day vacation. Right now I have my planning period, which is supposed to be used for grading tests, etc. I have about 20 tests to grade. I'm looking at them right now. They need to be done before my next class, which starts in about 80...

Assume one photon of a momentum entangled pair of photons is absorbed by an isolated atom. Is there now an entanglement between the other photon and this atom? If so, in what way is the atom entangled with the photon? If the atom after a while emits a photon, under what conditions would the...

Hello. once again, I'm making some large post where I complain about me, my situation, and my life in general. If you don't give a crap what I say, that's nice, but if you really don't give a crap, you won't say anything. Anyway, back to my badly formatted complaint about myself. Age 15...

Can you break it ! i bet u can't ! LDTGDOTURELOESIDWWCBSUVCAFEEOHISKEIFWCLUSTMNISEEIOLIMAOSIECDVDMUGWNOLOEEBPCITTNIUWDELHCHAINLHIMELAT This is a simple code that i made up for a friend who is confused about ...?? if you want to know u will have to break it ! As i said it is quite...

since god created all of existence includeing the very laws of physics that govern our universe then, couldn't god be able to manipulate and break the laws of physics that he created? also, wouldn't that mean that the laws of physics can not prove nor disprove god's existence? sorry if this is...

I really need help with this problem. I need to know how to work it and the answer. I am trying to review all these problems and they do not have answers. 2. It requires 242.7 kJ/mol to fragment Cl2 molecules into Cl atoms. What is the longest wavelength (in nanometers) of light that has...

"I think I may need a bathroom break. Is this possible?" The content of a note written by one Gorgeous George W. Bush to Ms. Rice at the UN today caught on camera. So the Leader of the Free World (TM) has to be told when to piss? That's classic! The irony is that I laughed so hard I wet myself...

i am moving back to PA from NC. I just moved into a new apartment been here for maybe 3 or 4 weeks. i signed a 12 month lease for 5 grand, or 417 per month. I am moving, there is no debate here, and it absolutely must happen...but paying 5g's for an empty room for a year is unacceptable. I...

I've just finished grade 11 and it's now summer break for me, so I have plenty of time on my hands. I want to review some of the stuff I learned this year in my Physics 111 class and hopefully get ahead on some of the stuff I'll be studying next year. From what I hear, Halliday and Resnick's...

From what I know the Nuclear waste that we have now. It gets burried and cemented into dead mines. Well as there is also a problem that the synthetic plastics do not decompose in landfills for a long time. Is it possible that we could use the radiation from the waste to break up the bonds...

Suppose here's a covered bottle full of liquid. I heat the bottle so the liquid changes to gas state. Will the bottle be broken since gas creates a bigger pressure?

WOO-HOO! Spring Break! Since I'm not going anywhere for Spring Break I'd like to live vicariously through those that are. Please tell where y'all are going for SB and what y'all are doing. Bonus for you if you are doing something BESIDES getting swervy. If I can get ANY time off from work...

Heya, could someone take a look at my code for me? I'm trying to do the second part of "Part 1" from the problem sheet: http://www.hoofbeat.tv/Page4%20Scan.jpg [apologies the image is small on the site - I don't have enough webspace to upload it any larger] However, my code never seems...

what is the end result when you break a proton down? I know that the charge is called a positron but what is the other half of the proton called?

I have been saying it since august that I would get my theory of eveyrthing website going when break started. Well break has arrived and I finally got www.utoe.org properly linked... sort of it will work if you go there but I still need some url masking. Anyway, I need some suggestions on what I...

What is everyone doing for spring break? I think that I am going to cancun where I may just meet up with Evo...jr... hahahaha. News to Evo sr. Anyway I thought this would be the appriopiate place to mention it haha. Also friends are planning a road trip to little old kansas... I wonder who lives...

Our teacher simply tells us to memorize a chart of derivatives. This is all fine and dandy, until it came to our last test and I am lost. I know d sqrt{X}=1/2X and d 1/X^2=-2/X^3 However, I don't know why that is, and it doesn't give me way to handle derivatives for cube roots, etc. For...

I'm supposed to be looking for the program "MicroSurvey" for the guy who's computer I'm using. I can find the "demo" I'm looking for a crack or serial to register it if anyone happens to know a good serial site. he keeps coming in and looking over my shoulder and I said "physics forums" is the...

Can lightning break diamond..? :redface:

Help with reverse siphon break? Hey there, Not sure if this is possible but... I was wondering if there was a way to set something up so that one liquid would siphon into a lower container and stop when the liquid reached the level of the tube opening without using any sort of valve...

A new claim has appeared in physics. It is claimed that there is a largest possible force, namely c^4/4G or 3 x 10^43 Newton. (The claim is made in the paper http://xxx.lanl.gov/abs/physics/0309118 ) All my friends and acquantances have first said "wrong!" but then failed to produce a...

"JOHNSON SPACE CENTER, Texas (AP) -- The space shuttle engineers who desperately wanted zoom-in satellite pictures of the damaged Columbia in orbit never spoke up at key meetings and never told the manager in charge of the flight. They were too uncomfortable. Too afraid. "...

I am really shocked ! http://www.cnn.com/2000/TECH/space/07/20/speed.of.light.ap/index.html is back to 2000 (i guess), but it is really shocking ! What do u people think ?