Science & Mathematics - 17 September 2006

.....how can I have green eyes with brown centers? No I don't mean the iris (duh!). I literally have dark chocolate brown rings around the iris that then fan out into green eyes.

Even more puzzling, my eyes used to be completely brown. They changed to green when I was 13 years old.

How does this happen?

2006-09-17 15:34:47 · 11 answers · asked by Marianne not Ginger™ 7 in Biology

How old is the universe [i googled, but i got like 15answers]?
How old is the solar system?
How many time have the United States landed on the moon?
[do not say it was fake]

[google gave me a lot of other answers]

2006-09-17 15:34:37 · 19 answers · asked by supervato 2 in Astronomy & Space

2006-09-17 15:33:01 · 3 answers · asked by cowgirl_up1228 1 in Mathematics

A research team estimates that 30% of their questionnaires will not be returned. How many questionnaires should they mail out in order to be reasonably certain that at least 750 will be returned? thanks!

2006-09-17 15:32:28 · 11 answers · asked by jason 1 in Mathematics

2006-09-17 15:30:17 · 2 answers · asked by mysteryhack 3 in Biology

if so where can i find footage or stills

2006-09-17 15:29:55 · 9 answers · asked by Anonymous in Zoology

(1)a supersonic jet flying at 145 m/s is accelerated uniformly at the rate of 23.1 m/s^2 for 20.0s.

(2)the speed of sound in air is 331 m/s.

2006-09-17 15:27:18 · 7 answers · asked by Falling Star 1 in Physics

2006-09-17 15:26:32 · 8 answers · asked by Anonymous in Biology

2006-09-17 15:26:21 · 7 answers · asked by I-C-U 5 in Earth Sciences & Geology

Please help with this problem---x squared minus 13x + 36=0... our teacher @ school is REALLY bad with explinations and counldn't really teach this. Once I know how to work one I can go on with the rest of my work...or you can IM me @ biznitchil@yahoo and walk me through it

2006-09-17 15:26:20 · 7 answers · asked by biznitchil 4 in Mathematics

I have read somewhere that light always moves relative to a traveller at the speed of light, but also that even if that traveller is moving the light beam will still be moving away from the traveller heading in the same direction at the speed of light. Is this correct and if so how is it possible? I would think that if a traveller is indeed heading in the same direction as a beam of light, at, say, half the speed of light, then the beam of light would be moving away from them only at a speed of half the speed of light. Anything more would mean that the light is travelling faster than the speed of light to a thrid party observer (which isn't possible). Can anyone clarify or did I read this fact wrong.

2006-09-17 15:25:22 · 9 answers · asked by midwestbruin 3 in Physics

I heard on NASA tv.... something about there being no more intelligent life left on Earth. Is this true?

2006-09-17 15:25:15 · 29 answers · asked by Anonymous in Astronomy & Space

can someone help me solve this?>

write in slope intercept form

passes through (3,11) and (-6,5)

2006-09-17 15:23:14 · 7 answers · asked by glakechic6 1 in Mathematics

The problem given is:
You have ben given 4 black pens. Design and carry out an experiment thatwill determine if the dye used in each pen is a compound or a mixture. You will need to provide evidence to justify your conclusions.

2006-09-17 15:22:24 · 4 answers · asked by Anonymous in Chemistry

finding the x intercept and y inercept of the line

2x+5y=10

can someone refresh my memory

2006-09-17 15:22:07 · 9 answers · asked by 12krank 2 in Mathematics

I need it to be able to be 3 quarters of an inch thick, and feel like real skin. does anyone have any ideas how this could be done?

2006-09-17 15:21:06 · 3 answers · asked by Yoshi 1 in Other - Science

2006-09-17 15:20:28 · 3 answers · asked by samantha s 1 in Chemistry

A 600.00 mL bottle of mathanol is sold in a discount store as a gasoline additive to prevent freezing for $0.39. the density of mathaol is .79 g/cm^3 at room temp. What is the price of methanol per kilogram?

i really dont understand it and i just need to see how it is done step by step once to see how to do my other problems!! thank you!

2006-09-17 15:18:44 · 6 answers · asked by abbs 2 in Chemistry

a salesperson earns $350 per week plus 10% of her weekly sales. Find the sales nescessary for the salesperson to earn at least $800 in one week. thanks

2006-09-17 15:15:28 · 13 answers · asked by jason 1 in Mathematics

2006-09-17 15:13:51 · 13 answers · asked by fresh2 4 in Astronomy & Space

2006-09-17 15:09:50 · 7 answers · asked by amanda t 1 in Astronomy & Space

I do what do you think?

2006-09-17 15:08:11 · 9 answers · asked by Anonymous in Earth Sciences & Geology

Ms. Mohammed wants to bleach her hair and she needs 1 500 ml of 36% hydrogen peroxide solution. The solutions available to her are 30% hydrogen peroxide solution and 40% hydrogen peroxide solution. How many millilitres of each solution should she use? plz show all your work and explain so i understand.

2006-09-17 15:04:10 · 5 answers · asked by MuchCount 1 in Mathematics

How do you find a limit that approaches infinity? How do you tell if the answer is a number, infinity, or negative infinity?

2006-09-17 15:03:37 · 6 answers · asked by sur2124 4 in Mathematics

What is the coordinates of point B?
please explain in detail.
thanx

2006-09-17 15:03:36 · 6 answers · asked by blond4ever_12 1 in Mathematics

What is the temperature that it burns? Not the temp to where you can ignite it but when the reaction occurs.

2006-09-17 15:03:05 · 3 answers · asked by jesse6317 2 in Chemistry

Chris is travelling by boat up the river and it took him 3h to cover 48 km against the current. It then took him 2h for the return trip with the current. What is the speed of the boat in still water and the speed of the current? [K//U 1 marks, App. 3 marks and Comm. 1 mark] plz show all your work and explain it so i understand.

2006-09-17 15:01:51 · 4 answers · asked by MuchCount 1 in Mathematics

There is a kind of lipstick called magic lipstick claimed that its color will change with your body temprature. Is there any special chemical inside?

2006-09-17 14:59:15 · 1 answers · asked by travelpa 7 in Chemistry

Physics laws for light only apply to light in a vacuum. So is light affected by friction? Light is energy right, not matter?

2006-09-17 14:57:53 · 7 answers · asked by Mada 2 in Physics

2006-09-17 14:56:42 · 10 answers · asked by angel 1 in Biology