Science & Mathematics - 23 November 2007

2007-11-23 10:13:25 · 4 answers · asked by K 1 in Geography

I am doing an assignment for my Anatomy class at college, my teacher wants me to find out how many women actually do faint at the sight of blood. This counts for half of my grade, so any help is appreciated, thanks.

2007-11-23 10:13:18 · 3 answers · asked by Anonymous in Biology

Subtract. Write your answer in simplest form.
(y-2)/(y+3)-(y)/(2y+6)

2007-11-23 10:10:41 · 5 answers · asked by Anonymous in Mathematics

Heat is caused by increased movement of molecules and atoms. If every atom in a diamond is virtually locked into place, is it possible for a diamond to heat up? If so, what temperature is necessary for this to occur?

2007-11-23 10:10:07 · 3 answers · asked by Mantra 2 in Chemistry

its so unlogic:

"in the beginning there was nothing, no universe no sun, no planets, no moons, no stars..nothing." And suddenly a Big Bang comes out of nowhere (how is that possible?)
exploding and creating the whole universe step by step ( how can a huge big bang, create a burning sun, a planet that can hold life, all this stars and planets, just like that, with one bang,) doesn't that sound unlogic and unpossible?

2007-11-23 10:09:00 · 13 answers · asked by Anonymous in Astronomy & Space

Help I am lost!

The height h in feet of an object after t seconds is given by the function h=-16t^2+30t+7
How long will it take the object to hit the ground? Round your answer to the nearest thousandth, and explain which solution is the correct one.

2007-11-23 10:03:26 · 4 answers · asked by Anonymous in Mathematics

A child is born with blood type O. All of the following could be the blood type of the parents EXCEPT

(A) A and B
(B) A and A
(C) O and O
(D) AB and O
(E) A and O

2007-11-23 09:55:23 · 5 answers · asked by Anonymous in Biology

an object is 380 yards away but it is up a 33 degree incline. How far away is it really?

2007-11-23 09:53:06 · 1 answers · asked by kenspel18 1 in Geography

for example: people with bigger noses or straighter noses will have high IQ? Etc, etc.

2007-11-23 09:52:47 · 5 answers · asked by Anonymous in Biology

2007-11-23 09:49:57 · 4 answers · asked by Nicole D 1 in Mathematics

will u see like the universes end or will time stop and u go into a new universe with like aliens and monsters and everything, and has any NASA ship gone into a blackhole or sent a camera? since ive always wondered this

Since if you go into a black hole many of my friends said that the ship or camera will just go out and will blow up. is this true

2007-11-23 09:46:29 · 14 answers · asked by Global Cool 2 in Astronomy & Space

2007-11-23 09:45:32 · 16 answers · asked by Anonymous in Other - Science

How are new atoms discovered?
and are there any good sites wheere i could research from?
thx X 100

2007-11-23 09:45:00 · 2 answers · asked by Anonymous in Chemistry

Nitric oxide. NO. is produced internal combustion engines. When NO comes in contact with air, it is quickly converted into nitrogen dioxide, N02, a very poisonous, corrosive gas. What mass of O is combined with 3.00 g of N in
a) NO and
(b) NO2? Show that NO and N02 obey the Law of Multiple.
Proportions

2007-11-23 09:44:37 · 1 answers · asked by mohamed r 1 in Chemistry

I need this for an experiment because every time I heat it up with an incandescent light bulb it has a reasonable increase in temperature. The beer bottle is also redish maybe from the iron oxide i guess.

2007-11-23 09:43:58 · 2 answers · asked by Anonymous in Engineering

Solve and check

(3/x+3)+1=(7/x+3)

2007-11-23 09:43:22 · 5 answers · asked by Anonymous in Mathematics

Multiply.
2m(5m – 3)(4m + 7)

2007-11-23 09:41:28 · 1 answers · asked by Anonymous in Mathematics

2007-11-23 09:40:33 · 1 answers · asked by Candi W 1 in Chemistry

the temperatures are going to be cold tonight, well here in the uk at least.
how you going to cope with it? what you wearing for bed??

2007-11-23 09:39:30 · 8 answers · asked by Anonymous in Weather

Golden ratio's little brother.

2007-11-23 09:36:53 · 11 answers · asked by Anonymous in Mathematics

Case 1: 1 x 1=1
Case 2: 11 x 11=121
Case 3: 111 x 111=12321
Case 4: 1111 x 1111=1234321
Case 5: 11111 x 11111=123454321
Case 6: 111111 x 111111=12345654321
Case 7: 1111111 x 1111111=1234567654321
Case 8: 11111111 x 11111111=123456787654321
Case 9: 111111111 x 111111111=12345678987654321

2007-11-23 09:36:24 · 4 answers · asked by love 1 in Mathematics

Given the supply and demand functions D(x) = 15-1/3x and S(x) = 2x^1/3, find the equilibrium point.

I set the two equal to each other and cannot seem to get the correct answer no matter how I solve it!

2007-11-23 09:33:49 · 2 answers · asked by Anonymous in Mathematics

I need help.im in 9th grade and i need to do a research project that has to be pretty advanced.right now im going to do an experiment where im take nails comparing them to see which one rust fast like,one will be a regualr steel one,one will be painted,one will be galvanized and there will two nails used together as cathode protection.how can i make it better?i need answeres asap,please!!!!!!!!!!!!!!!!!!!!!!!!

2007-11-23 09:32:10 · 1 answers · asked by Speeding D 4 in Chemistry

2007-11-23 09:30:58 · 4 answers · asked by Anonymous in Chemistry

the standard enthalpy of formation of H2O2 is -136 kj/mol. Use the info, along with the bond energies below, to estimate the bond energy of an O-O bond.

H-H 432
H-O 467
O=O 495
O-O ???

someone please help at least a starting point would be nice and a full out explanation.

2007-11-23 09:30:53 · 2 answers · asked by raleighzia 1 in Chemistry

Being on the other side of the Sun and orbiting in complete opposition to Earth. The twin could than exist out of sight of the human eye or the telescope.

2007-11-23 09:30:22 · 16 answers · asked by rainyday9113 1 in Astronomy & Space

You guys did a good job on the last one, so here's a new one:

The length of a rectangle is increasing at a rate of 8 cm/s and its width is increasing at a rate of 3cm/s. When the length is 20 cm and the width is 10 cm, how fast is the area of the rectangle increasing.

2007-11-23 09:27:11 · 3 answers · asked by glass_commander 2 in Mathematics

For voltaic cells, how do salt bridges come into play? If the ions actually move through the salt bridge, why cant the solutions just be mixed?

2007-11-23 09:21:53 · 2 answers · asked by Zapking 2 in Chemistry

2007-11-23 09:21:02 · 2 answers · asked by dadadon 1 in Botany

2007-11-23 09:20:36 · 7 answers · asked by jared r 1 in Mathematics