Science & Mathematics - 12 July 2007

Let's say I have a plastic container full of liquid, and I want to freeze it instantly or very fast, How can I do this?
I've read that I can do this with nitrogen or CO2. Is this true? Are there laboratories the sell this?
Is this liquid poisonous once it's frozen in CO2 or Nitrogen?

Thanks.

2007-07-12 04:09:35 · 2 answers · asked by Anonymous in Physics

My doctor has prescribed me 50,000 IU of Vit D, this seems like an awful lot, is this normal?

2007-07-12 04:01:35 · 3 answers · asked by QUESTIONBOX 2 in Medicine

if so what?

2007-07-12 03:58:12 · 12 answers · asked by willow 6 in Other - Alternative

2007-07-12 03:46:58 · 5 answers · asked by dan_skl 1 in Engineering

Could you help me find the GCF using 3 method?

1. 36, 45
2. 18, 12, 36
3. 20, 26, 24

thank you.

2007-07-12 03:34:25 · 3 answers · asked by Scarlet 3 in Mathematics

S(3dx/(xln5x)) (where S is the integration sign)

What to do? I know integration is "backwards differentiation" ... but how do you go about it with a division.

2007-07-12 03:33:35 · 4 answers · asked by Anonymous in Mathematics

Can you help give an analysis between these mighty animals and the minute ones they seem to have a negative and positive relationship with respectively.

2007-07-12 03:32:57 · 9 answers · asked by T. Boy 1 in Other - Science

2007-07-12 03:32:44 · 5 answers · asked by gfgfd g 1 in Mathematics

Hi,

Im 21 and currently working at siemens as a production hand, i come from an engineering familly and have decided to go the same way, a little late but... o well

What course can i do to take a leap in top engineering, unfortunatley i have no A level's

2007-07-12 03:29:29 · 11 answers · asked by smity 2 in Engineering

I am 18 wks. 3 days pregnant and they think I have Kidney stones.

2007-07-12 03:27:19 · 1 answers · asked by Lauren 1 in Medicine

I want to collect and store negative ions from the air. All suggestions are welcome.

2007-07-12 03:25:25 · 3 answers · asked by Dr. Frankenstein 1 in Physics

Does anyone no where I can get a manual/electrical diagram for a Polar T18900 guillotine

2007-07-12 03:10:43 · 4 answers · asked by graham h 1 in Engineering

i mean from which subject in math shall i start reading.can you give me the order of subjects in math.i cannot directly go to advanced topics from which topics should i start and end with

2007-07-12 03:09:02 · 9 answers · asked by Anonymous in Mathematics

If you take 15% off of $97 how much is that? I still havent learned how to do this in school, so could someone help me please? Thanks!

2007-07-12 02:59:02 · 10 answers · asked by Anonymous in Mathematics

I havent done math in 6 years and one of my employees is going to take a placement test I know the answer i dont know how to work it out
6 3/4 - 2 7/8

2007-07-12 02:58:27 · 8 answers · asked by Joesph B 4 in Mathematics

2007-07-12 02:58:18 · 10 answers · asked by gravelstatic 1 in Astronomy & Space

www.powerfromgravity.com

2007-07-12 02:52:14 · 4 answers · asked by Anonymous in Engineering

Structural analysts can identify vibration modes, and often locate defective structural elements, by measuring vibrational responses while applying a driving signal to the strudture under examination. This is referred to as system identification (SI). When you lightly disturb the webs of spiders of particular species (e.g., daddy longlegs) you will see the spider pumping his body to shake the web, sometimes by a reciprocating motion and sometimes by whirling in circular motion. He invariably finds a resonant frequency and his oscillations can become pretty large. Could he be employing SI to detect the presence of, and possibly locate, a prey insect? Web sites I have seen state that the shaking serves either to further entrap the prey, or as a form of camouflage for the spider itself. Could SI also be a reason? Detection/location by SI could be useful at night or if the spider's eyesight isn't very clear.

2007-07-12 02:52:12 · 4 answers · asked by kirchwey 7 in Zoology

When I was young, my Mother forbid me to touch butterflies because according to her, the dust could enter my eyes and blind me. Of course, I still touched butterflies but I was extremely careful not to rub my eyes when I did handle them.

Can it really cause blindness?

2007-07-12 02:51:55 · 7 answers · asked by Hansel and G 1 in Zoology

want to know why there is a rainbow colour around the sun

2007-07-12 02:48:55 · 6 answers · asked by Anonymous in Weather

1 what is the square root of a^2+b^2???
2 If 50 =square root of 3x and y = 2 x, find y

2007-07-12 02:48:11 · 6 answers · asked by Anonymous in Mathematics

how do you solve this?

2007-07-12 02:47:01 · 9 answers · asked by gfgfd g 1 in Mathematics

I'm going to Cancun for 5 days. It's my first out of the country vacation but it's also the first time I will be in an area frequented by sharks. Now I have always loved and been fascinated by sharks and have done my research on them. But I was wondering what species I may find in the waters around Cancun. I know that whale sharks frequent the area and I'm sure various reef sharks will be around. I've also heard that tigers can be found in the area. Any thoughts?

2007-07-12 02:42:39 · 2 answers · asked by Anonymous in Zoology

Thanks!

2007-07-12 02:41:25 · 6 answers · asked by Anonymous in Chemistry

What kind of experience do medical doctors need with computers?

2007-07-12 02:38:59 · 3 answers · asked by fanciful me 2 in Medicine

Classify the triangle DEF with vertices D(1, 5), E(-3, 1), and F(-1, -3).
choices-
right
isosceles
scalene
equilateral

2007-07-12 02:38:15 · 3 answers · asked by Anonymous in Mathematics

Usually, it's solid to liquid to gas and vice versa. How come some substances sublime without passing through the liquid phase? please connect it the intermolecular forces and kinetic energy. Ty!

2007-07-12 02:37:42 · 4 answers · asked by jaryllechu 2 in Chemistry

2007-07-12 02:34:28 · 8 answers · asked by Anonymous in Weather

Will the world stop revolving?

2007-07-12 02:34:06 · 9 answers · asked by Anonymous in Astronomy & Space

Im am certain that it is not a cricket, it sounds different and much louder.

2007-07-12 02:29:52 · 7 answers · asked by Sean G 1 in Zoology