Science & Mathematics - 20 September 2007

The largest source of nitrogen on our planet is in the _____, in the form of ______. However, plants can only use nitorgen after it is converted to ______

2007-09-20 19:05:27 · 1 answers · asked by Anonymous in Biology

I checked the weather next week because we're planning to go to the beach. The weather forecast says the weather would be: Overcast, t-storms; humid. What does this mean? especially overcast? Thanks!

2007-09-20 19:05:25 · 3 answers · asked by nomadic jane 2 in Weather

2007-09-20 19:01:32 · 2 answers · asked by Zahir S 1 in Geography

There was an article online a few months ago about a small island off of the coast of England that was for sale. It had been a fort during the WW2. The owner claimed it was an independent nation. Does anyone know the name? Or have any links to articles about it?

2007-09-20 19:01:31 · 2 answers · asked by brad s 2 in Geography

i need something to keep me warm and dry for a base layer. should i go with something natural, like silk, or get something made of a synthetic fiber?

2007-09-20 19:01:25 · 2 answers · asked by tuna 2 in Weather

I learned in Physics class that the force from a magnetic field on a charged particle is: F = q v x B. Where v and B are the velocity and magnetic field vectors, q is the charge and x means cross product. But, the velocity depends on my frame of reference. For instance I could be moving at the same velocity as the particle so that the particle appears to be stationary in my frame of reference. The force on the particle can't change just because my velocity changes. If it did then different observers would see something different. I'm obviously missing something here.

2007-09-20 18:58:22 · 4 answers · asked by Demiurge42 7 in Physics

find values of X in domain [0,2pi]

sin(x+pi)+cos(x-(pi/2))=1
this is what I did. is the 1st circle ze right thing?
http://i3.tinypic.com/53p67vo.jpg

the right answer is:
x=pi/6 ; 2pi/3 ; 7pi/6 ; 5pi/3
but how do I get to it???

2007-09-20 18:58:04 · 2 answers · asked by Anonymous in Mathematics

if u help me with many. ill give u 5 points for each answer by posting another question

u can list websites that are helpful

I have to explain the structure of the space station and what rooms its composed of. I need to have like the floor plan of the space station..

Also I can bring 6 people total.. What kind of people do I need?? not like celebrities... like people with jobs..


Also have to describe the path of energy and matter through living systems and the physical environment (trophic levels? biomass? dont get this)

--!! -- also!!! I need to list cycles to maintain the stations.. I need to have 5 cycles.. Got the water cycle and I need more cycles... I need a oxygen cycle yup?? How should I make it?? Get it from the plants?? Isnt there a site with the drawing of the cycles????Tell me more cycles..

2007-09-20 18:52:40 · 2 answers · asked by Joe H 1 in Biology

The measure of the angles of a triangle is 26° less than twice the measure of another angle. The measure of he third angle is 35°. Find the measure of the other two anges.

2007-09-20 18:49:38 · 6 answers · asked by rbrulesamanda 2 in Mathematics

Just one more 22.47-17.58=? or 1.12am next day -11.50 the previous day=?

2007-09-20 18:45:11 · 3 answers · asked by BJJCASH 1 in Mathematics

2007-09-20 18:44:12 · 1 answers · asked by sreekumar a 1 in Geography

2007-09-20 18:44:11 · 1 answers · asked by Anonymous in Geography

[ss is "subscript"]
... i'm not even sure of which meathod of proving i have to use (i.e. induction) for these problems, but basically im given a sequence with a couple of terms defined by x[ss: m+3] = something with all x having a subscript containing "m". then i'm asked to prove a sequence defined by x[ss: n] = with the terms to a power of "n"

how am i supposed to prove this when one is "m" and the other is "n"....


...umm something to note, i tried the first couple of sequences with but defintions of the sequences and the first few terms were equal. so can i say that the definition containing "m" equals the definition containing "n"

(hope that wasn't too confusing ^_____^)

2007-09-20 18:43:14 · 2 answers · asked by Anonymous in Mathematics

2007-09-20 18:38:49 · 6 answers · asked by Anonymous in Chemistry

I just heard that people from the middle ages used to be much shorter than we are today. That's not very long ago. anywho.. just intrigued. What say you?

2007-09-20 18:33:29 · 16 answers · asked by Nik 1 in Biology

how does it work? do I have to keep it on all the time or will it turn itself on if there is a warning?

2007-09-20 18:33:03 · 2 answers · asked by pumpkin2 1 in Weather

can some please tell me how they got the answer to this statistics problem ?

compute the z score

2400 - 2600
------------------ = 0.30
670

2007-09-20 18:30:09 · 4 answers · asked by maxmac97 1 in Mathematics

What is the probability that her third child will be a girl? Explain your reasoning.

2007-09-20 18:29:56 · 9 answers · asked by Anonymous in Biology

If you're going to tell me to do my own homework, don't bother.

2007-09-20 18:29:09 · 5 answers · asked by Anonymous in Biology

what is lactic acid? where is it found and how is it use? and how it effects on us?

I need it in simple words so i can understand...not cuz i don't do my hw. I did a research found lots of great stuff but don't understand any.

2007-09-20 18:20:42 · 2 answers · asked by Anonymous in Chemistry

If you place a sugar cubes and croutons into an empty water bottle and top on the top.
What might happen if you shook the bottle for a few minutes or few times?

2007-09-20 18:17:09 · 4 answers · asked by lax 1 in Earth Sciences & Geology

2007-09-20 18:12:59 · 5 answers · asked by Pastor c 1 in Weather

2007-09-20 18:10:10 · 4 answers · asked by Ovechkin08 2 in Biology

A person on a trampoline bounces straight upward with an initial speed of 4.6 m/s. What is the magnitude of the person's speed when she returns to her initial height?
what is the V final? (m/s)

2007-09-20 18:08:23 · 1 answers · asked by p0oh 1 in Physics

C'mon how does it happen? I know that it happens so that animals can adapt to their surroundings or to predators or prey. But don't tell me that when two chimpanzees or a closer relative to humans just mate a out comes a human.

2007-09-20 17:58:10 · 11 answers · asked by rvinscx 1 in Zoology

2007-09-20 17:57:20 · 12 answers · asked by Anonymous in Mathematics

2007-09-20 17:56:52 · 2 answers · asked by Kenster102.5 6 in Biology

My boyfriend is into astronomy and I would like to take him somewhere for our anniversary. Does anyone have any good suggestions?

2007-09-20 17:49:36 · 7 answers · asked by Mt22619 1 in Astronomy & Space

2007-09-20 17:49:29 · 9 answers · asked by gabrielle 2 in Other - Science

What is the slope of the tangent line to the graph of y=f(x) at the x = a = 2, i.e., at the point (2, [ 1/2]) ?

2007-09-20 17:43:36 · 4 answers · asked by Lauren 1 in Mathematics