Science & Mathematics - 9 December 2007

And explain how to graph it

2007-12-09 13:47:01 · 1 answers · asked by Anonymous in Mathematics

2007-12-09 13:44:55 · 1 answers · asked by ? 2 in Mathematics

biology

2007-12-09 13:44:41 · 1 answers · asked by chishikarin 1 in Biology

A 2% difference in atmospheric pressure exists between the underside and top of a roof during strong winds. Show that the resulting lifting force on a roof that has a projected horizontal area of 2000 m(squared) is more than 4 million N.

I know that pressure=force/area so.. force=pressure x area, but I do not seem to be getting the correct area. Any help please?

2007-12-09 13:38:13 · 1 answers · asked by aasdfjkl 1 in Physics

Thanks

2007-12-09 13:35:47 · 2 answers · asked by Tyler 2 in Medicine

2007-12-09 13:33:31 · 1 answers · asked by Lala T 1 in Chemistry

alright well my friend was telling me about this theory that a meteor will hit the earth on december 21st 2012.
it's scaring the crap out of me.
please helpp!!!
is it true!!!???

2007-12-09 13:30:51 · 15 answers · asked by Anonymous in Astronomy & Space

2007-12-09 13:30:45 · 4 answers · asked by softbllstar 2 in Biology

2007-12-09 13:29:05 · 2 answers · asked by Anonymous in Biology

If not, can you correct them please? Thanks!

S2– [Ne] 3S2 3P6

Fe3+ [Ar] 4S2 3D3

2007-12-09 13:29:04 · 3 answers · asked by Anonymous in Chemistry

I never figured it out. The real reason, guys?

2007-12-09 13:28:48 · 3 answers · asked by Anonymous in Biology

I have to classify the following as synthesis, decomposition, or replacement. I'm confused and don't understand!

1.burning wood
2.burning gasoline
3.burning candle
4.burnt waffles
5.milk gone sour
6.wood rot
7.frying eggs
8.baby spit up
9.green penny
10.baking cookis
11.lighting a match
12.cooking a turkey
13.rusted nail
14.throw up
15.brown apple
16.glow stick
17.turning on the light
18.grilled steak
19.leaves changing color
20.spray 'n wash
21.baking a cake
22.making pancakes
23.taking a picture


I'm not asking for you to tell tell me what each one is, I'm just wondering if you could tell me in general what burning, baking, etc. are classified as. Thank you so much in advance!!

2007-12-09 13:27:52 · 1 answers · asked by Anonymous in Chemistry

2007-12-09 13:26:54 · 7 answers · asked by I Love McLuvin 5 in Biology

do you know anything about Nanotechnology

2007-12-09 13:24:07 · 5 answers · asked by Anonymous in Other - Science

In a hotel bathroom, the tiles on the floor are 4" squares. There are similar tiles on the wall. The door opens into the bathroom with the hinge on the right side of the door frame. The door frame extends 2" from the adjacent wall (or in other words, the door hinge is 2" from the corner). The center of a rubber bumper on the end of a 1/2" long door stop contacts the adjacent wall 1" from the end of the fourth tile from the corner. Directly opposite the rubber bumper is the screw for attaching the door stop to the door.



How far from the hinge is the center of the screw hole for the rubber bumper? State you answer to the nearest 1/16th of an inch.

2007-12-09 13:22:13 · 1 answers · asked by sharifalkulike_22 1 in Mathematics

How could you arrange 12 toothpicks to make six identical squares.

2007-12-09 13:18:59 · 3 answers · asked by Anonymous in Mathematics

Given
[f(a+h)-f(a-h)]/h=f'(a+ch)+f'(a-ch)
where f is differentiable on the reals, a is in the reals and h>0
How could you show that there's a c in (0,1) such that the above is true?

2007-12-09 13:18:58 · 1 answers · asked by Lucy J 2 in Mathematics

It is true that the complete combustion of a hydrocarbon can do more work than incomplete combustion. Compare the work ΔG done by the combustion of one mole of ethane undeer these conditions.
Incomplete combustion: 2 C2H6 (g) + 5 O2 (g) → 4 CO(g) + 6 H2O (g)
Complete combustion: 2 C2H6 (g) + 7 O2 (g) → 4 CO(g) + 6 H2O (g)

can someone please help me solve this problem? and show how it is done.
thank you

2007-12-09 13:14:17 · 1 answers · asked by abc 1 in Chemistry

Explain or identify the symmetry of the points (x1,y1) and (x2,y2)
Explain me a conjeture about any relationship between sin(t1) and cos(t1+pi)
Explain me a conjeture about any relationship between cos(t1) and cos(t1+pi).
please if anybody can do this, i cant understand it.

2007-12-09 13:13:10 · 1 answers · asked by Anonymous in Mathematics

Ok. So biology we have to make a newspaper up or whatever and everything has to be about the various groups of organisms: insects,mammals,angiosperms,gymnosperms,amphibians,annelid worms,nonvascular plants, and protozoans.
And my partner is doing the editorial, so im waiting for her to get done so i can write the letter to the editor. But what should i write about for the lead story? I already know what im going to do for the review. So. Yeah. The lead story has to be a scientific news story about characteristics of each group of organisms & it has to be a news breaking story. Real or not. HELP PLEASEEE.

2007-12-09 13:12:47 · 2 answers · asked by Anonymous in Biology

Please be concise and consider what property of the original solar disk mostly determined where different types of planets formed.

2007-12-09 13:11:47 · 6 answers · asked by Mr$.J@CK$0N 1 in Astronomy & Space

How do humans utilize the Earth's crust? What is topsoil?

2007-12-09 13:11:40 · 2 answers · asked by Feng Z 2 in Earth Sciences & Geology

The colour change was that it began to get clearer. I need to determine the direction of the equilbrium shift and the reason for this shift.
I know that Fe^3+ is colourless, SCN^- is colourless, and Fe(SCN)^2+ is blood red.

2007-12-09 13:11:03 · 2 answers · asked by Anonymous in Chemistry

most people say its the same thing but its not my science teacher told us it isn't the same thing but i forgot what the difference is

2007-12-09 13:09:43 · 3 answers · asked by CGGGGG 2 in Weather

Jessica shines a lamp that emits a variable intensity light on a photoelectric cell. She notices that a current can be detected on the current indicator. When the lamp is turned on, no current is detected. Even increasing the intensity of the light t the maximum level has no effect.

Jessica repeats the experiment with a different lamp. When the lamp is turned on, no current is detected. Even increasing the intensity of the light t the maximum level has no effect.

2007-12-09 13:07:25 · 2 answers · asked by Haylee S 1 in Chemistry

A solution contains 0.837M Li^+ and 7.32 X 10^-2M CO3^-2. What type of solution is this with respect to lithium Carbonate? Compare your Q and K. (Ksp=1.70 X 10^-3)
a. saturated
b. unsaturaed
c. supersaturated

can someone please help me answer this question? and show the answer is reached.
thank you

2007-12-09 13:04:33 · 1 answers · asked by abc 1 in Chemistry

2007-12-09 13:03:43 · 2 answers · asked by lucky 1 in Chemistry

2007-12-09 13:03:39 · 7 answers · asked by Mr$.J@CK$0N 1 in Astronomy & Space

I cant figure out what they might be.

2007-12-09 13:01:23 · 1 answers · asked by l 1 in Biology

My question is how did Mars lose its magnetoshere, becasue that is one of the beliefs to why its atmosphere has changed drastically, is this the reason, and if it is how did it lose its magnetoshpere and if it isnt what is the casue of the change in atmosphere.
Thank you in advance

2007-12-09 13:00:48 · 6 answers · asked by Anonymous in Astronomy & Space