Science trivia

Dernhelm said:
What's 'Quark matter', assuming there is such a thing?
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Quarks and Leptons are the building blocks which build up matter, i.e., they are seen as the 'elementary particles'.

I am going to mess this up with a Biology question. :p [I took Honors Biology this past year at school. 95% on the exam, yay!]
Let's start with something easy.

What do all prokaryotes lack?
 
Easy? :eek:

(please excuse me. I'll leave this for someone else. :p)

BTW, I wasn't quite clear with my question; I was under the impression that 'strange matter' 'quark matter' and 'strange quark matter' were alternative terms for the same thing. Apparently not. Strange matter was what I should have said. It's a type of quark matter, made of up-quarks, down-quarks, and strange-quarks.
 
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Dernhelm said:
Easy? :eek:

(please excuse me. I'll leave this for someone else. :p)

BTW, I wasn't quite clear with my question; I was under the impression that 'strange matter' 'quark matter' and 'strange quark matter' were alternative terms for the same thing. Apparently not. Strange matter was what I should have said. It's a type of quark matter, made of up-quarks, down-quarks, and strange-quarks.
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Aye. So my answer wasn't wrong, but it wasn't right either? lol. :p

Accually it is fairly easy. For me at least. :eek:
 
I, also. ;) But we must needs find one who knows of it, or this thread will sink into the depths of oblivion!
 
A fox is allowed to cheat, as long as he does it in a sly fashion.

"Answers.com" defines prokaryotes thusly:

An organism of the kingdom Monera (or Prokaryotae), comprising the bacteria and cyanobacteria, characterized by the absence of a distinct, membrane-bound nucleus or membrane-bound organelles, and by DNA that is not organized into chromosomes. Also called moneran.

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Even before looking it up, I had a feeling that there might be truth in the "no cell wall" suggestion, because the very word "prokaryotes" reminded me of "caries," meaning CAVITIES.
 
hahaha. Yes; all prokaryotic organisms lack a nucleus.
Why do people hate biology so much?

Someone else can do a question. :D
 
Since Olorin doesn't seem to be providing the next question....


Name three metallic elements which are also digestible nutrients.
 
I don't know. So I am going to take a guess in the dark. My guesses would be:
Magnesium, Potassium, & Calcium.

What do the first and second laws of thermodynamics state? [haha. This is off of a review sheet that I have to know before school starts. My teacher has already mailed me homework. Summer break is just barely over the half way mark. o.0]
 
(I think iron would be one of those metals - but I have no idea about the rest)

First Law of Thermodynamics: Heat is work and work is heat . . .
Second Law of Thermodynamics: Heat cannot of itself pass from one body to a hotter body.

What is the LHC, and what use will it be? (Bonus if you know when it will start operation.)
 
The Large Hadron Collider. Dunno when it opens, but I think it's in Switzerland... anyway, it's the largest particle accelerator built to date.

Who discovered Pluto?
 
I remember reading an article when I was like 11 that told that a little girl named Pluto, but I can't remember who found it. [Without looking it up you know.]
 
I'm thinking somebody Lowell, possibly? (And the LHC starts proper operation Oct. 21, 2008! :D

Um . . . sorry, this is an easy one: c stands for what, in physics?
 
Derny: c is the speed of light, approx. 186,000 mps or 300,000 kps. In other words, fast.

Ok, here's one I've always wondered about. In Einstein's famous e=m*c-squared equation, what units are e, m, and c in?
 
c is distance over time, and m is mass (grams, kg, etc.) -- you can use whatever units you want for them, but if you use something non- standard, you will end up with a non-standard energy unit.

For instance: xft over yhr squared equals

x² ft²
y² hr²

times z kg equals

z * x²
y²​

with the units
kg * ft²
hr²​

This is perfectly correct, but rather unusual; and there's no short name for it. If you use kilograms, meters, and seconds, then you come out with the units

kg * m²
sec²​

which are called Joules. There are other standard units as well, but I think that's enough for me at the moment. :p

I might be wrong, but I thought the LHC starts on September 10, 08? I could be totally wrong, though.
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It all depends on your definition of the word 'start' ;) Sep. 10, 08 is, I guess, sort-of a trial run. Then, after Oct. 21, 08, the first high-energy collisions will take place. Either date will do. :D

How is it that at the speed of light, motion through time stops . . . yet as far as I can make out, light does move through time? (That is, obviously it takes light a certain amount of time to get from point A to point B.) :confused:
 
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