Mystery Definition and 897 Threads

The question is: If a sprinter running at 10 meters per second could convert his kinetic energy into upward motion, how high could he jump? How do I solve this if I use the KE = 1/2 mv^2 I don't know what the mass is?

Ok I am not especially knowledgeable in thermodynamics or physics so I am sure the answer to this is quite simple. However to me it is quite a mystery. This is my thought. You have a cylinder filled with water; above it on supports is a solid object the exact size of the cylinder. Through...

Va Va Voom! I know a lot of the British people have seen the new Renault Clio adverts however I am not sure whether it is shown in the U.S. Anyway Thierry Henry (a famous French footballer...AMAZING) goes on and talks about what is Va Va Voom and what isn't Va Va Voom. I was just...

What determines the Colour of BLOOD And why the colour of insects different? I don't know Biology But i want the answer for above just to add to my knowledge

A question for Monique and anyone else who knows this material... Everyone born into my family has blue or grey eyes. Even when my mother's sister married a brown-eyed man, their children had blue eyes. Every single person born into our family has eyes of some shade of blue. Now, I don't...

I am very eager to understand what energy really is, thought no one really does. Are there more than one definition of energy? Is energy a property within all objects and thereby unifies all objects? Is it true that every object has a potential energy?

Why is the speed of light a constant?

Please take a look at these lines which demonstrate my problem in a korn shell terminal: First I defined var with a newline embedded in it. I printed it and, as expected, got abc def. I printed the same thing to file1. Next, I edited it using the pattern operator ${var//\\n\} to...

I first read this story in New Scientist when I was collecting it. Here are some highlights: The article has been reposted here: http://www.you.com.au/news/362.htm and in many other places. Any comments?

It seems to me that this is just a simple algebra problem, that doesn't have much to do with waves, but it's the only problem on the homework that I can't figure out. :-/ I know there's an easy solution to it, but I keep getting the wrong answer. Anyway, here it goes: A seismographic station...

I have an assignment free night and thought I would make a post that hopefully hasn't been made before. A discussion of perfect numbers: A positive integer n is said to be perfect if n is equal to the sum of all its positive divisors, not including n itself Alternatively, if σ(n)...

In the experiment that I did today, there's a very strange step. After mixing two solutions in a beaker, according to the lab manual, we needed to scratch the bottom of the beaker using a spectula so as to help forming ppt. My question is why does scratching the beaker help forming ppt?

Sometimes when I am driving I make myself the following questions. Why do the front windscreen of cars steam up? What is the physical reason? and what is the best way to eliminate the steam? I have heard many theories about the cause and how to act. who knows the right theory?

http://www.space.com/scienceastronomy/jupiter_dark_spot_031023.html

http://www.adn.com/alaska/story/4206897p-4219148c.html

I am posting here since no specific claims are made. This seems to be a good example of... http://www.news24houston.com/content/headlines/?ArID=16799&SecID=2

http://www.sabcnews.com/south_africa/general/0,2172,67329,00.html

http://www.upi.com/view.cfm?StoryID=20031006-113325-5591r

Observations from the Galileo spacecraft suggest that Jupiter's moon Europa hides a liquid ocean under its icy top. To protect the planet-sized world, considered a promising site to search for life beyond Earth, NASA engineers crashed the robot ship into Jupiter on September 21. This...

http://www.sciencedaily.com/releases/2003/09/030929055601.htm

Question posed: Julia is as old as John will be when Julia is twice as old as John was when Julia's age was half the sum of their present ages. John is as old as Julia was when John was half the age he will be 10 years from now. How old are John and Julia...

http://archive.ncsa.uiuc.edu/Cyberia/NumRel/GravWaves.html Eddington was not the only skeptic. Many physicists thought the waves predicted by the theory were simply a mathematical artifact. Yet others continued to further develop and test the concept. By the 1960s, theorists had showed...

Why is it said that a black hole is a literally bottemless pit in space-time? If it weren't bottemless, then the singularity inside would not have to be of infinite density. I'm not sure if I have missed anything important, so PLEASE help!

I was reading In Code by Saray Flannery,one of the problem in the book bothered me, it is not the problem itself, it is the solution. A Party Trick If someone tells me 2, 2 and 3 are the remainders when she divides her age by 3, 5 and 7 respectively then I can work out her age. Solution...

http://www.kansascity.com/mld/kansascitystar/living/special_packages/starmagazine/6693767.htm

http://www.paranormalnews.com/article.asp?ArticleID=725

dear reader, what is the mass of light particels?

dear reader, what is comptons effect.how did compton do this experiment?[?] :smile:

Imagine rolling a coin with a radius of 1 unit on a flat surface. To get translated 2[pi] units, the coin must obviously roll 1 revolution. (the angle swept is 2[pi] and the arc length covered equals to 2[pi]*r = 2[pi]*1 = 2[pi]. Now imagine rolling a coin on another stationary coin with the...

""During [most of] July, our water temperatures were, I would say, right around normal," said Capt. Butch Arbin, head of the Ocean City Beach Patrol. That's in the low 70s. About two weeks ago, he said, "there was a tremendous change in temperature, [dropping] as much as 10 degrees overnight."...

Check this site address out: http://scitoys/scitoys/scitoys/magnets/gauss.html It is a neat little science project site, and I found this project the most interesting (except for the non-elecricity requiring radio) on their site. How it tells you it works(shortened): You take a ruler and...

"HOWELL TOWNSHIP -- They've come late at night, holding flashlights, their beams cutting the dark in the middle of 1,000 acres of wheat fields. They've come in the afternoon under blue sky to lift their arms and pray." http://www.freep.com/news/mich/signs5_20030805.htm

"The notorious "elephant man" may have suffered from two rare disorders, according to scientists." http://news.bbc.co.uk/2/hi/health/3084483.stm

I'm sure you all have seen them, I just wonder if anyone knows what they do: I have noticed traffic sensors of some sort in various places over the last few months. They consist of two long wires which look like co-ax cable duct-taped across the road/street/lane/highway. They are connected to...

www.spiritofmaat.com/archive/feb2/bearden.htm has anyone read this? skip the fist part if you wish, its the second part that may be interesting

folding paper Why can't we fold a piece of paper more than 8 times, no matter how large it is? PS I've seen this question in another forum quite a long time ago but no one seems to know why. Some claimed that it can be explained by using some chemistry principles while others said it is...

Brown's Gas Is it real or is it some joke? Its properties are somewhat amazing.. Its produced by electrolyzer. It produces 1866 volumes of gas from 1 volume of water, its stable, it burns, with COLD flame, but can punch holes into and sublimate tungsten (13000F), applies electric charge to...

OK here is what I am trying to figure out there is a large factory by my house which towers about 4 stories above the surrounding community. on the roof there is an array of 802.11b anttenas (im assuming its B and not A cause B has larger range) there are 10 large anttenas, 5 on one side of...

Why is it light bulbs always tend to break the moment when you switch them on.

It is accepted to consider BH as an object which on a reason of the achievement of its mass before a certain critical value (?) be subjected to collapse. This situation when in small volume does concentrated enormous mass with unbelievably enormous density of the material. Having the most...

I am wondering why it is that we have a vaccine for the Hepatitis B virus and not for the Hepatitis C virus..

The mystery is that which lies within. And yet the mystery is none other than the essence which gives rise to form. Whereas all mysteries are pretty much one and the same, in that they lead to the one true mystery, The Mystery of Life ...

Why do the particles of substances vibrate? Just where does that constant energy come from?

What causes the Aurora Borealis?

First let's work our way up. 1. For a fire to start, oxygen has to be present, yes? 2. There is no oxygen in space(vacuum), yes? Since they are surrounded by vacuum, they have absolutely no way to obtain the oxygen to support combustion. Then how is it that the Sun and stars can burn...

I noticed this brownish substance along the walls of the fish tank containing my Bala Shark, Schrodinger, and this substance is also in the gravel. The idea of purchasing an "algae-eater" to see whether it will feed off this substance crossed my mind but it could eat it without knowing what...

Does SR seem like a total mystery to you? This short book goes through relativistic mechanics and demystifies the so-called "paradoxes" of relativity clearly and concisely. Let's work through it! http://www.physics.nyu.edu/hogg/sr/sr.pdf