Science & Mathematics - 9 October 2007

forget about magnetic poles

2007-10-09 05:39:18 · 11 answers · asked by gdes_00 3 in Geography

if you toss a coin 10 times, how many times do you expect to turn up heads? Why...

2007-10-09 05:39:10 · 8 answers · asked by Darren 1 in Mathematics

What is the weather like?

How is the weather like?

2007-10-09 05:38:13 · 2 answers · asked by Anonymous in Weather

2007-10-09 05:35:27 · 9 answers · asked by tankwillmsg 1 in Mathematics

2007-10-09 05:35:01 · 4 answers · asked by ? 5 in Weather

2007-10-09 05:33:06 · 6 answers · asked by abhishek 1 in Earth Sciences & Geology

No "idk" answers, pls?

2007-10-09 05:31:08 · 22 answers · asked by kazpursmom 2 in Astronomy & Space

In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotational motion is faster than approximately 2.25 revolutions per minute. On the other hand, the magnitude of the centripetal acceleration at the astronauts' feet should equal the magnitude of the acceleration due to gravity on earth. Thus, to eliminate the difficulties with motion sickness, designers must choose the distance between the astronaut's feet and the axis about which the space station rotates to be greater than a certain minimum value. What is this minimum value?
I'm not even sure how to get started on this! Please help!

2007-10-09 05:28:59 · 2 answers · asked by NoV A 2 in Physics

Can somebody please explain to me the nanotechnology that goes in to Integrated Ciruits. Sources for your answers would be appreciated.

2007-10-09 05:26:12 · 1 answers · asked by MJ 1 in Other - Science

sources for your answers would be appreciated

2007-10-09 05:24:16 · 3 answers · asked by MJ 1 in Other - Science

http://img229.imageshack.us/img229/2881/gfhdev3.jpg

2007-10-09 05:23:45 · 1 answers · asked by Anonymous in Chemistry

Do I need a strong background in Algebra to succeed in Statistics? I'm having difficulty with "word problems" and memorizing the formulas. Hopefully, I'll have a cheat sheet of some sort to use.

2007-10-09 05:22:30 · 4 answers · asked by queenbee572002 2 in Mathematics

I need to replicrate to density of bone, and i need to make a compound that I am able to make into the shape of the bone before the compound hardens.

2007-10-09 05:21:25 · 1 answers · asked by Anonymous in Chemistry

5xsquared - 30x + 40

and

3xsquared - 60x + 300

2007-10-09 05:15:24 · 4 answers · asked by Jimmy 2 in Mathematics

What kind of molecule is phospholipids
A.fat
B. Protein
C.carbohydrates
D.starchy

2007-10-09 05:13:34 · 11 answers · asked by Anonymous in Biology

i started with: (x-1) / (x^2+3) - 2/x < 0
then found common denominator, and after simplifying i got a quadratic on top and incomplete cubic on the bottom... it doesn't seem right though...and i can't solve it any further... please help.

2007-10-09 05:13:29 · 2 answers · asked by Maths student 1 in Mathematics

I know that arcsin x is 1/sqrt(1-x^2).

2007-10-09 05:11:40 · 2 answers · asked by Tp 2 in Mathematics

2007-10-09 05:10:14 · 1 answers · asked by ≈ nohglf 7 in Mathematics

2007-10-09 05:07:54 · 2 answers · asked by sachin m 1 in Engineering

Also, I am under the impression that other moons of the solar system behave the same (I was reading an article about Saturn's moon Lapetus, and it seems that this moon also shows always the same face to its center planet).... is that true ?

2007-10-09 05:05:10 · 8 answers · asked by Bignol 2 in Astronomy & Space

--that is initally at rest.

(b) The sled and person coast 30.0 m on level snow before coming to rest. What is the coefficient of kinetic friction between the sled and the snow?

2007-10-09 04:59:20 · 3 answers · asked by Anonymous in Physics

--rest.
The lumberjack runs to the other end of the log, attaining a velocity of +2.8 m/s relative to the shore, and then hops onto an identical floating log that is initially at rest. Neglect any friction and resistance between the logs and the water.

(b) Determine the velocity of the second log if the lumberjack comes to rest on it.

2007-10-09 04:58:21 · 1 answers · asked by Anonymous in Physics

2007-10-09 04:58:03 · 4 answers · asked by Anonymous in Astronomy & Space

2007-10-09 04:57:04 · 2 answers · asked by ccutestuff2001 2 in Chemistry

Cinnamic acid and urea melt at 133 C. The melting point of an unknown is found to be 133C. When the unknown is mixed with rea, the melting range of the mixture is 120-125 C.

Is it possible to identify the sample from this information? If not, what further tests would you perform?

I'm really kind of stumped because I have a feeling it's cinnamic acid but I don't know why it went down that much....

2007-10-09 04:56:42 · 3 answers · asked by Burnt Toast 1 in Chemistry

And also, which would react to benedict's solution?

2007-10-09 04:56:26 · 1 answers · asked by heartiful 3 in Chemistry

technology advances at a incredible rate,do you believe that someday robots, or machines might surpass us mankind in inteligence?,thanks for answering

2007-10-09 04:52:07 · 4 answers · asked by Nando 3 in Other - Science

2007-10-09 04:47:23 · 22 answers · asked by Anonymous in Mathematics

i want to make a set of pan pipes and would like to know what the formula for calculating the length and diameter of a given pipe should be to create perfect pitch notes [A,B,C,D,E,F,G] am i right in thinking this is related to Pythagoras? many thanks :-) gareth, wales

2007-10-09 04:46:29 · 2 answers · asked by want to make pan pipes :-) 1 in Engineering

from DNA to MRNA, thymine does not exist and uracil takes on the role of thymine, with it's base pair adenine. what i want to know is that from MRNA to TRNA, is adenine's complementary base pair still uracil or is it thymine??

2007-10-09 04:45:59 · 4 answers · asked by amelia l 1 in Biology