Science & Mathematics - 11 November 2006

2006-11-11 06:57:51 · 2 answers · asked by lee 1 in Astronomy & Space

can u help me solve these two. i know how to solve it... can u do it without a calculator and show me the steps though.

2006-11-11 06:57:35 · 3 answers · asked by feelinglikeastar 2 in Mathematics

2006-11-11 06:56:36 · 5 answers · asked by Anonymous in Biology

Could ye please explain what carbon dioxide is in detail ?? And please use small ish words its for my little sisters project at school. And if ye can wil ye include how it can save your life and kill you ?? Thanks alot !!

2006-11-11 06:56:36 · 5 answers · asked by Pretty-princess 2 in Chemistry

I love when its cold,and i dont like when its hot,even though i live in Florida. Whats wrong with cold ?

2006-11-11 06:55:39 · 11 answers · asked by Kurama's Lover 2 in Weather

how do u do this.


1. x-y=9
x+y=7

2. 5x-4y=12
3x-4y=4

3. 3x+3y=6
2x-y=1

4. 3x-5y=13
4x+3y=17

5. x-y=1
3x-y=10

6. 4x=2y-7

7. y=-2x
5x+3y=-3

8. x+y=6
-2x+y=-3

9. 2x+y=45
3x-y=5

i don't get this stuff at all please help me

2006-11-11 06:55:06 · 11 answers · asked by Anonymous in Mathematics

2006-11-11 06:51:29 · 2 answers · asked by osawillie 1 in Biology

2006-11-11 06:51:12 · 2 answers · asked by Anonymous in Physics

I do not pay for my tap water, can i fit some sort of generator to make cheap power for me.
I do have good tap pressure

2006-11-11 06:46:57 · 14 answers · asked by Steve f 2 in Engineering

2006-11-11 06:46:53 · 1 answers · asked by great mind 1 in Chemistry

to another, but not when moves from one part of a circular orbit to another?

2006-11-11 06:40:09 · 4 answers · asked by Isabel P 1 in Physics

A lunch tray is being held in one hand, as the drawing illustrates. The mass of the tray itself is 0.160 kg, and its center of gravity is located at its geometrical center. On the tray is a 1.00 kg plate of food and a 0.180 kg cup of coffee. Obtain the force T exerted by the thumb and the force F exerted by the four fingers. Both forces act perpendicular to the tray, which is being held parallel to the ground.

http://i21.photobucket.com/albums/b272/Cajunboiler/09_68.gif

Find F in Newtons, and T in Newtons.

Okay, Whenever I worked this problem out, I kept getting the wrong answer (homework site is telling me it's the wrong answer). I know this has to do with External Torques equally 0, but I don't know if I'm plugging the numbers in correctly. Torque = r (distance) x F (Force) x Sin(theta). It would be greatly appreciated if anyone could tell me what are the correct numbers to plug into the equation.

2006-11-11 06:39:19 · 3 answers · asked by Confused 1 in Physics

doing a lab report on mass.

2006-11-11 06:38:26 · 6 answers · asked by madroxon 1 in Physics

2006-11-11 06:37:50 · 2 answers · asked by solankipavankumar 1 in Chemistry

I would also like to be able to copy and paste the structural formulae or the actual 3D shapes of the molecules into Microsoft Word. I am an AS Level (year 12) chemistry student, but I have only been studying since the beginning of September. I have (of course) done GCSE chemistry, but I don't want something overly complicated. Free would be nice too! :P

2006-11-11 06:37:07 · 1 answers · asked by Anonymous in Chemistry

how much is 2 square feet is in centimeters??

2006-11-11 06:35:15 · 7 answers · asked by Anonymous in Mathematics

2006-11-11 06:33:57 · 16 answers · asked by cl-SMOOTH 2 in Astronomy & Space

Son's homework!

2006-11-11 06:32:40 · 16 answers · asked by Anonymous in Chemistry

How can i find the length and the angle of a line that comes from the right angle of a triangle and divides the hypotenuse exactly in half?

2006-11-11 06:31:31 · 7 answers · asked by kusbetts 2 in Mathematics

A device for training astronauts is designed to rotate the trainee in a horizontal circle of radius 11.5 m. If the force felt by the trainee is 7.18 times her own weight, how fast is she rotating in m/s?

Now express your answer in revolutions per second.

How would you solve this when not given her weight or mass?

2006-11-11 06:29:31 · 3 answers · asked by justinegunderson 1 in Physics

i,m aware that this varies widely from one species to another you will not have to point this fact out to me..

2006-11-11 06:25:09 · 3 answers · asked by houdini 3 in Botany

2006-11-11 06:24:07 · 4 answers · asked by shayna m 1 in Astronomy & Space

The planets in our solar system have names. Our galaxy has a name. What would be a fitting name for our beautiful body of planets known as our "solar system"?

2006-11-11 06:20:19 · 10 answers · asked by instantanything 1 in Astronomy & Space

2006-11-11 06:18:55 · 3 answers · asked by jillyrae7 2 in Earth Sciences & Geology

2006-11-11 06:17:52 · 5 answers · asked by x4_love_and_memories 2 in Astronomy & Space

A student needs 625g of Zinc Sulfide. He can synthesize is using the reaction: Na2S + Zn(NO3)2 = ZnS + 2NaNO3

How many grams of zinc nitrate is needed if he can make the zinc sulfide in 85% yield. Assume he is using excess of sodium sulfide.

2006-11-11 06:11:56 · 1 answers · asked by Onecolegirl 2 in Chemistry

2006-11-11 06:10:45 · 10 answers · asked by nsparky1 2 in Mathematics

2006-11-11 06:10:36 · 15 answers · asked by Sandy S 1 in Mathematics

In probabily ,sometimes set and combination(C) is used to solve problem.In which time it is used and why?

2006-11-11 06:05:46 · 2 answers · asked by star123 2 in Mathematics

2006-11-11 06:05:22 · 14 answers · asked by Anonymous in Chemistry