Science & Mathematics - 6 December 2007

um i kinda need this right away

2007-12-06 03:24:35 · 10 answers · asked by Anonymous in Geography

pls give scientific answers

2007-12-06 03:22:58 · 5 answers · asked by abhay o 1 in Physics

How do you do a serial dilution? What is the protocol for one?If you are given a 3.5% solution how u make 1.75?

2007-12-06 03:12:39 · 0 answers · asked by Earl Bkins 2 in Biology

I need to know.

2007-12-06 03:11:37 · 21 answers · asked by Guy W 1 in Mathematics

I need to know how long a 50 lb. bag of grain feed will last if feeding 4 gallons a day.

2007-12-06 03:06:44 · 24 answers · asked by bic 3 in Mathematics

2007-12-06 03:04:27 · 9 answers · asked by Colleen 2 in Medicine

Ms. Andrew ask her class groups to make posters for the bulletin board. She told them to draw, color, or past 42 stars on each poster board. The only rule was that the stars had to be in equal groups and the number of starss in each group had a to be prime. How many groups of stars might be on the poster, and how many stars are in each group?

2007-12-06 03:03:17 · 5 answers · asked by Lisa the Angel 1 in Mathematics

What is the third term in the expansion of (x - 3)^7 ?

How do i solve this?

2007-12-06 03:01:56 · 5 answers · asked by Anonymous in Mathematics

for example like this-

5x-y=33
7x+y=51

2007-12-06 02:58:35 · 6 answers · asked by Cazzie 2 in Mathematics

667mm
converted to feet and inches

2007-12-06 02:43:58 · 8 answers · asked by infobod2nd 4 in Mathematics

"Ideal" gas meaning the "Ideal Gas Laws" apply.

2007-12-06 02:43:43 · 6 answers · asked by Jesse R 4 in Chemistry

Yn is the position at time n of a particle executing a simple random walk with partially reflecting barriers at 0 and a so that P{Yn = y +1|Yn-1 = y}= p for y = 0, 1, 2, ..,.a-1, and
P(Yn = y-1| Yn-1 = y) = q = 1- p for y 1, 2, .., .a-1, a..
Also P( Yn= a | Yn-1= a) = p and P( Yn= 0 | Yn-1= 0) = q

If П = [П0, П1, П2, . . . . Пa ] is defined to be the stationary distribution for this process

П_i=pП_(i-1)+ qП_(i+1) for i=1,2,….a-1

Show that
П_1= ((p/q)*)П_0 ,П_2=((p/q)^2)*П_0 and in general П_a=((p/q)^a)*П_0

2007-12-06 02:41:10 · 3 answers · asked by Anonymous in Mathematics

This might sound stupid for some of you but ... some say that evolution is real and some otherwise ... anyways I'm wondering why did evolution stopped(if it ever existed) . I mean it did ... any difference between like 4000 years ago and now ? The only one i can see is techonologicaly improvement as well as increased knowledge amongst us. So I'm pretty sure that evolution does exists but I'm way to young and uninformed to confirm that.

2007-12-06 02:38:30 · 8 answers · asked by Andrew177 3 in Earth Sciences & Geology

and everyone is trying to solve the problem and you think you've got the answer?

what do u do?

2007-12-06 02:36:58 · 5 answers · asked by o0♥0o 1 in Astronomy & Space

7. Some guy named Jim has come up with a scheme for eliminating coins. This scheme involves probability and the fact that most cash registers today are computers. Suppose that every cash register could be programmed with a random number generator; that is, suppose that it were possible to pick a random number from 1 to 99. Jim's system works as follows. Suppose you purchase items totaling $15.89. The computer would choose a number from 1 to 99 and then compare it with the cents portion of the purchase. In this case, if the random number is between 1 and 89 the price would be rounded up to $16; if it is between 90 and 99 the price would be rounded down to $15. For example, if you purchase a cup of coffee for $1.20, and the random number generator produces a random number from 1 to 20, the price is $2, but if it produces a number from 21 to 99 the price is $1. Use your problem solving skills to make several comments on this scheme.


10 points for best answer .... please help

2007-12-06 02:32:48 · 3 answers · asked by Anonymous in Mathematics

2007-12-06 02:31:49 · 19 answers · asked by Anonymous in Paranormal Phenomena

I hav 2 make an ad for uranium what can i use it for bsides killing ppl?

THX

Cammy
~Tennessee Girl~

2007-12-06 02:27:02 · 3 answers · asked by Anonymous in Chemistry

what does INSOLUABLE IN WATER mean?
I am on lots of different meds from my doctor, and this is always stated for "Ativan". what does it mean?
thanks!

2007-12-06 02:26:23 · 6 answers · asked by Anonymous in Chemistry

would you go if you had the expertise and the chance to go? how long will it take and how are they going to do it? how will they avoid getting hit by asteroids and debri

does it make sense to go to Mars? r those robots still on Mars?

sorry if theres too many questions!

2007-12-06 02:26:22 · 4 answers · asked by o0♥0o 1 in Astronomy & Space

Do you feel as if your purchase of a telescope was worth it? Do you thoroughly enjoy it and use it as much as you anticipated?
I really really enjoy space and astronomy, and know more about the sky than most... I just wanna be assured that spending this amount of money is gonna be worthwhile, ya know?

2007-12-06 02:24:24 · 10 answers · asked by Jansen J 4 in Astronomy & Space

"It is a nearly white powder almost insoluble in water."
every time i look it up on the web for my personal info it always says this.
what does "INSOLUBLE IN WATER" mean and it it important to know?
thanks!
(yea the doctor has me on it, and its great stuff)

2007-12-06 02:23:01 · 7 answers · asked by Anonymous in Medicine

1.Name each of the following solutions as an acid.
H2Se
HClO2
HClO3
H3PO4
Name each of the following molecules.
SO3
NO
SiF4
NF3

2007-12-06 02:16:31 · 4 answers · asked by Anonymous in Chemistry

I know this has somthing to do with what x is going to equal to get zero but i still dont get it.

Solve: x^2-5x+6=0

a. x= 2, x= 3 c. x= 1, x= 6
b. x= -2, x= -3 d. x= -1, x= 6

2007-12-06 02:14:58 · 10 answers · asked by soulof_adragon89 1 in Mathematics

is it true that dangerously cold temperatures can get inside the lungs and freeze them?

2007-12-06 02:04:37 · 4 answers · asked by KU! 3 in Weather

2007-12-06 02:01:14 · 6 answers · asked by Lorraine 2 in Mathematics

A.) Citric acid
B.) Lactate
C.) FAD
D.) Oxaloacetate

2007-12-06 01:55:52 · 4 answers · asked by D.J 1 in Chemistry

With all this talk of water once being on Mars, I've recently being wondering where the free radical oxygen(s) to form it came from in the first place,
Maybe I'm wrong but I always though oxygen was so reactive the only way for it to exist in any real quantity was to be continually produced, e.g photosynthesis.
So if water existed on Mars there must have been a substantial amount of oxygen in free radical form, where could it have originated from?

Please correct me if my logic is flawed.

2007-12-06 01:53:36 · 8 answers · asked by Anonymous in Astronomy & Space

the x-2 is over the x^2-4 i know ive seen this before but cant remember to save my life.

2007-12-06 01:52:10 · 9 answers · asked by soulof_adragon89 1 in Mathematics

I am a freshman in sophomore honors biology. My teacher is really hard and he gives these insane essay questions for us to do. I normally get them but this time i cant figure it out. "Why did the echinoderms give rise to chordates as apposed to arthropods or any other phylum." I think it is because echinoderms have an internal skeleton and their embryological development patters are deuterosomal. If someone could critique me and add some more reasons would be really great.

2007-12-06 01:50:59 · 4 answers · asked by 1337_3[V]0_3A73/2 2 in Biology

I meeting with my son's science teacher to discuss evolution because I will not allow him to be in class for it. I need some basic info on the lies, such as the inaccuracy of radiometric dating etc. I am familar with answers in genesis and dr dino but want something I can quickly refer to that is short so I can study and know it better.

2007-12-06 01:45:05 · 20 answers · asked by Kelly 2 in Biology