Science & Mathematics - 7 January 2007

Between normal X-ray technology and Computed Tomography used in hospital , especially about Computer Function of CT
thanks
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Small suggestion :)
Are you having blog , could you invite me as your friend :)

2007-01-07 14:15:47 · 3 answers · asked by I AM VIETNAMESE 1 in Medicine

2007-01-07 14:13:33 · 4 answers · asked by YOOOOO 1 in Biology

1.What 2 things do cells need?
2.Is blood necessary for all cells?
3.What would happen if the blood couldn't get to the cells?

2007-01-07 14:11:41 · 7 answers · asked by Lime Green Queen 2 in Biology

i need to know how viscosity is used in modern day thigs.
i allready know that the viscosity of motor oil is a useful way of viscosity

2007-01-07 14:09:42 · 5 answers · asked by badger 1 in Engineering

how do you convert 12.7 mol to molecuels. i thought you just multiply the mol by avagodros number but its wrong.

2007-01-07 14:08:32 · 8 answers · asked by imigeofinvsible 1 in Chemistry

In my life experience, 95% of us don't go to doctors unless we absolutely feel we have to. Yet, the arrogant Doctors seem to think we go there cause we like it or something or having nothing better to do with our time or nowhere better to spend our money. What is wrong with Doctors that makes them do this?

2007-01-07 14:06:41 · 8 answers · asked by Anonymous in Medicine

2007-01-07 14:04:50 · 10 answers · asked by Anonymous in Astronomy & Space

2007-01-07 14:04:18 · 2 answers · asked by musicrocks7 2 in Biology

2007-01-07 14:03:01 · 5 answers · asked by comsublant5 1 in Physics

Hey I'm having difficulty with this math problem:

Find the area of an equilateral triangle if the radius of its inscribed circle is 3.

Could someone enlighten me as to what steps I should take to obtain the answer?

2007-01-07 14:02:51 · 2 answers · asked by Anonymous in Mathematics

(a) Superior vena cava
(b) inferior vena cava
(c) ductus arteriosis ( or arteriosus)
(d) Pleural membrane
(e) larynx
(f) glottis
(g) heart valves

2007-01-07 14:02:17 · 1 answers · asked by ? 1 in Biology

Bio homework help

2007-01-07 14:02:08 · 2 answers · asked by Anonymous in Biology

The Big Bang theory purports to explain the creation of the universe from nothing! Would you agree it is flawed since it makes a major false prediction known as the Cosmological Constant? Cosmological Constant is essentially the intrinsic density of the vacuum P vac & part of Einstein's theory of general relativity to achieve a stationary universe. Much more to this but it would take up too much space. Whast's your theory on this Cosmological Constant?

2007-01-07 14:01:20 · 8 answers · asked by ZORRO 3 in Astronomy & Space

tell me all of the composite numbers until 80?

2007-01-07 14:00:34 · 3 answers · asked by Elizabeth! 3 in Mathematics

hey i have a math problem i'm having issues with:

The point (5, y) is equidistant from (1, 4) and (10, -3). Find y.

My first instinct was, of course, to plug the points into the midpoint formula, but the x coordinate comes out to be 5.5 rather than 5.

Help would be greatly appreciated :)

2007-01-07 14:00:12 · 3 answers · asked by Anonymous in Mathematics

2007-01-07 13:59:37 · 3 answers · asked by erica l 1 in Physics

I'm doing Bio 30 (in alberta) and the text book talks about pre and post ganglionic nerves. Nowhere in the textbook does it say what a ganglion is. I've looked it up on wikipedia and elsewhere, but it gives this huge complicated explaination. I just need to know whatthe ganglion is, so I can know what is meant by pre and post ganglionic nerves.

2007-01-07 13:58:12 · 2 answers · asked by darcy_t2e 3 in Biology

The moon is ever so slowly moving farther from the earth (something like an inch or so per year, I've heard). How long before life as we know it is negatively affected? How long until the moon is no longer a satellite? Are other planets' moons doing the same? Could we realistically (and safely) nudge the moon back to a nearer orbit by placing (on the "dark side" of the moon) columns from which rocket bursts could be set off to propell it?

2007-01-07 13:58:09 · 6 answers · asked by The Invisible Man 6 in Astronomy & Space

There are many robots which are able to walk and to climb stairs but why no company creates a robot for disabled people who can't walk?

Imagine a diabled person walking on his feet with the help of a robot, instead of being on a weelchair. That's not impossible.

2007-01-07 13:56:49 · 9 answers · asked by ___ 4 in Other - Science

and i got (5,-5) nd (-7,7)am i right with the coordinated that i got
please help i need this urgentally before tomoorrow monday jaunrary 8 2007 thank you in advance for your help

2007-01-07 13:55:04 · 1 answers · asked by isisthewolf 3 in Mathematics

The earth has raised by one temperature, some of you may think,"One temperature isn't gonna kill us all" but many things have changed. For instance, the ice glaciers are melting and polar bears are rapidly decreasing..I want to know you're side.

2007-01-07 13:54:50 · 19 answers · asked by wiwa lover! 3 in Weather

i have tested a timing circuit in a project board and working fine. but when soldered the components in PCB its not working. help me. is thr any problem due to soldering and if how give some tips to soldering.

2007-01-07 13:53:20 · 6 answers · asked by Anonymous in Engineering

As you know, its very cold in outer space. Scientists can create temperatures to less than one millionth of a degree above absolute zero--millions of tiomes colder than in outer space! Yet the temperature in outer space doesn't get colder. It could, but something is keeping that from happening. Any ideas?

2007-01-07 13:53:01 · 5 answers · asked by ZORRO 3 in Astronomy & Space

ok i would really really appreciate it if some one would hepl me with this
but i dont just want the answer, i just want to know how to do it.
if that makes sense...
thanks
_heres the problem-__________________
14 = 2/3 (9y - 15)
_______________thanks!

2007-01-07 13:52:22 · 14 answers · asked by Truth be told. 2 in Mathematics

I have seen a few answers here that are copied and pasted from wikipedia and other online sources, without crediting the source, making it appear to be the original work of the answerer. I have even seen such answers receive "best answer" in favor over other people's original explanations. Is this fair? If not, what can we do about it? Is there any way we can all agree to credit our sources, and indicate when something has been quoted directly rather than condensed or paraphrased, just as we have agreed not to use overt placeholders?

2007-01-07 13:52:16 · 13 answers · asked by Joni DaNerd 6 in Mathematics

Please help!

2007-01-07 13:51:38 · 9 answers · asked by twistedangel 3 in Chemistry

2007-01-07 13:51:30 · 4 answers · asked by &b a r b i e 1 in Mathematics

Given the Earth's mass as 5.9742E24 kg and the Sun's mass as 1.98892E30 kg, and the Earth's distance to the sun as 1.5E11 m, what is the earth's orbital velocity around the sun in meters per second? How would you go about to solve this problem? I know this involves Newton's law of universal gravitation and the centripetal acceleration equation, but I'm stuck.

I'd appreciate any help! Thanks.

2007-01-07 13:49:10 · 5 answers · asked by F E 2 in Physics

Yes, i'm an idiot for using pumps, and i'll never do it again. I was just over at my friend's house and he decided to let me try one out, so I just said, "Sure!" And all hell's broken loose.

I'm stuttering because of the pain, and I don't want to see a doctor, but if I have to, I will. Damn it hurts like a *****!

2007-01-07 13:47:41 · 6 answers · asked by Black Tom Vane 1 in Zoology

The number (n) of grams of a compound forned during a certain chemical reaction is given by n=2t/(t+1) where t is time in minutes. Evaluate d^2n/dt^2 ( the rate of increase of the amount of the compound being formed) when t=4 min.

2007-01-07 13:47:39 · 4 answers · asked by babblefish186 3 in Mathematics