Science & Mathematics - 30 June 2007

2007-06-30 11:38:25 · 11 answers · asked by i_love_jt0 1 in Chemistry

2007-06-30 11:38:15 · 8 answers · asked by Michael n 2 in Astronomy & Space

a) transition
b) induction
c) transcription
d) mutation
e) duplication

2007-06-30 11:36:54 · 8 answers · asked by soundrediscovery 2 in Biology

a) aortic valve
b) ventricular valves
c) semilunar valves
d) tricuspid valve
e) bicuspid valve

2007-06-30 11:35:10 · 10 answers · asked by soundrediscovery 2 in Medicine

I usually take 15mg of hydrocodone for my pain, but now I got switched to percocet 10mg. Is that the same thing?

2007-06-30 11:35:03 · 5 answers · asked by Anonymous in Medicine

a) may be occupied by only one species
b) may be occupied by any number of species
c) may be occupied by only one individual
d) is a micro-habitat
e) is really non distinguishable

2007-06-30 11:33:08 · 4 answers · asked by soundrediscovery 2 in Botany

I live in Texas USA where we have been experiencing frequent rain for many days. Today, I was watching the rain fall from the clouds in the distance. I could actually see the water falling at an angle from the clouds as they were moved along by the gentle wind.

What holds all that water in the clouds until it finally falls to the ground?
I mean, that is A LOT of water and must be terribly heavy.
What force holds it up there until it's time to fall?

Why doesn't gravity just pull it down immediately and what determines the moment the rain finally does begin to fall?

???

2007-06-30 11:27:41 · 2 answers · asked by Hello Kitty 7 in Weather

2007-06-30 11:25:02 · 5 answers · asked by reggieg 4 in Zoology

which will be more accurate etc..

2007-06-30 11:14:47 · 5 answers · asked by Wildroze 4 in Physics

I have looked everywhere and can find random sample but not non random sample.

2007-06-30 11:13:54 · 6 answers · asked by tara-can you 1 in Mathematics

A female's nipples? I saw a CSI episode the other day that involved that. I know they make mistakes but I was curious.

Do/can liquids get absorbed through a female's nipples? A male's? What about a male's penis?

2007-06-30 11:07:09 · 4 answers · asked by Anonymous in Biology

I cannot seem to solve this problem for my life. To begin, is this an interference problem or double-slit problem? Anyway.. more importantly is the procedure to get the answer. Here'e the question:

Two line sources transmit microwaves of wavelength 3 cm in phase. How far apart should they be in order to produce a 10 degree angular seperation between the first and second order bright fringes on one side of the central peak?

Thanks a bunch if you took the time to answer!

2007-06-30 11:03:34 · 3 answers · asked by determined_ladii 4 in Physics

The problem is-

A car leaves San Fransisco heading towards Denver going at the constant speed of 50 miles per hour. Another car leaves Denver heading towards San Fransisco an hour later, but going at a constant speed of 60 miles per hour. When the two cars meet, which car is closer to Denver?

Its a trick question in real life, but if you wanted to solve it, could you? If so, how?

2007-06-30 11:03:32 · 6 answers · asked by Anonymous in Mathematics

His actual speed 6 miles an hour but I have no idea how to get to it. Can someone explain it to me? Thanks.

2007-06-30 11:02:42 · 4 answers · asked by Mayoku 2 in Mathematics

which would you be and why?

2007-06-30 10:54:52 · 14 answers · asked by lindsey 5 in Botany

2007-06-30 10:54:02 · 10 answers · asked by peaches 1 in Mathematics

I need to know how to do it using dimensional analysis (i hate this method).

2007-06-30 10:53:43 · 6 answers · asked by Dr. Richard Anderson, M.D., M.S. 3 in Mathematics

my husband likes to heat water for tea in the microwave. i like to use the electric kettle, which i believe uses less electricity and saves energy. he says it doesn't matter. who's right?

2007-06-30 10:52:55 · 9 answers · asked by Anonymous in Engineering

2007-06-30 10:52:34 · 3 answers · asked by peaches 1 in Mathematics

2007-06-30 10:50:55 · 2 answers · asked by peaches 1 in Mathematics

x-6/x+4 divided by x+7/x+5. I know when -4, -5, and -7 are used as x will make the equation 0, but why can 6 be used as x?

2007-06-30 10:48:53 · 3 answers · asked by cheekyrojo 1 in Mathematics

Hi,

There are many situation in which one may want to use MRI to determine cerebral blood flow. I want to compare groups or the effect of medicaiton. But how can I best do this using DSCE-MRI?

For example Rempp et. al. fits both the arterial input function (bolus) and the tissue curve (bolus)with a gamma variate. Then using fourier-deconvolution he finds the 'actual' tissue concentration curve.

But for me none of this is working. For example I have a Echo Planer Imaging scan at a temperal resolution of 1.5 seconds. If I just manually locate the arterial curve in the area of the circle of willis - and then the second curve in the (periventricular ) white matter I don't get nice curves - and they most definitely don't give great deconvolutions. The tissue curves are way lower than the artery curves. And the artery bolus-curve seems wider then the tissue bolus.

I don't know what to do. Is it an image acquisition problem- Do I need to use filtering?

HELP!

2007-06-30 10:40:48 · 1 answers · asked by ? 3 in Medicine

I own a celestron nexstar telescope. I really don't know much about space and basically got it just so I could peek at the stars. I own three lenses with which I can get an awesome view of the moon but cannot see any other planets sharply, with my most powerfull lense mars is still just a very bright star. So I was wondering if it is possible to get an even more magnifying lens which would allow me to see other planets more clearly. If you have any suggestions or links it would be greatly appreciated

2007-06-30 10:39:42 · 7 answers · asked by atomic blue 1 in Astronomy & Space

what are the top ten natrual disaserts?

2007-06-30 10:36:46 · 8 answers · asked by Anonymous in Astronomy & Space

I am a reallly BIG fan of her site. Even thought I am only 12 years old, I am attending my 2nd year in high school and want to be a doctor . I LOVE her site and she is my role model ......What do you think of her???

2007-06-30 10:18:05 · 1 answers · asked by cocobear1325 1 in Medicine

If it was put in when they blow the glass it would stick to the molten material. If they sealed the glass after putting it in, you would see the seal. So how do they do it ?

2007-06-30 10:17:50 · 4 answers · asked by Steven W 3 in Physics

2007-06-30 10:12:55 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2007-06-30 10:12:50 · 10 answers · asked by Anonymous in Biology

What does that mean for the earth? Don't we need the moon?

Thanks all, was just reading an article and wanted to know more about all this.

2007-06-30 10:02:43 · 8 answers · asked by Star 5 in Astronomy & Space

I have a neice who was badly crushed by being "T-boned" in an intersection in an automobile. She has been in a medically induced coma, on life support, not even breathing on her own for over two weeks. My question is, why keep her in an unnatural coma awaiting surgery on her pelvis for so long? It would seem her natural body processes of recovery would best function for her if she was allowed to return to consciousness. She has never returned to consciousness after the accident and I don;t think they really know if she can.

2007-06-30 10:00:41 · 4 answers · asked by Mad Mac 7 in Medicine