Science & Mathematics - 23 June 2007

Its been raining heavily for days now in Scotland. Its so dull and depressing.

2007-06-23 23:58:19 · 29 answers · asked by Anonymous in Weather

2007-06-23 23:55:56 · 1 answers · asked by Henry S 1 in Physics

Many people have speculated that due to the technological singualrity and moore's law.it is possible to create a brain simulation by 2020 and a turing test passable AI by 2025+.and due to the advancement in biotech to produce human v2.0 aka enhanced humans by 2013.and what do u think are the repercussions of such developments?negative?positive?

2007-06-23 23:55:03 · 1 answers · asked by Anonymous in Other - Science

Aniline - aminobenzene

2007-06-23 23:44:46 · 1 answers · asked by My pic looks good 2 in Chemistry

i need read reasons why plumbus [pb2+]is placed in both the groups. please give scientific answers or ur views

2007-06-23 23:37:16 · 1 answers · asked by an 1 in Chemistry

/www.qlink-online.co.uk

2007-06-23 23:31:29 · 2 answers · asked by tubscouk 2 in Physics

Specifically, a Cu/Zn cell.

2007-06-23 23:26:53 · 2 answers · asked by electric.sparkle 2 in Chemistry

2007-06-23 23:18:38 · 11 answers · asked by Anonymous in Earth Sciences & Geology

a) I^2 (iodine)
b) CH^3COOH
c) NH^3
d) C(Cl^4)

does anyone know the answer? i am really weak in chemistry and i need help fast.

2007-06-23 23:13:42 · 3 answers · asked by Lonelyz 1 in Chemistry

1. Factor

3x^2 - 7xy - 6y^2

2. When a ball is thrown, its height in feet h after t seconds is given by the equation

h = vt - 16t^2

where v is the initial upward velocity in feet per second. If v = 15 feet per second, find all values of t for which h = 3 feet. Round answer to 2 decimal places.

3. What is the x - intercept(s) and the coordinates of the vertex for the parabola y = x^2 +4x-5. If there is more than one x-intercept seperate them with commas.

Thank you

2007-06-23 22:54:49 · 4 answers · asked by CHRISTOPHER R 1 in Mathematics

a) magnesium hydroxide and dilute sulphuric acid
b) iron(II) hydroxide and dilute nitric acid
c) aqueous sodium hydroxide and dilute sulphuric acid
d) aqueous potassium hydroxide and dilute nitric acid

2007-06-23 22:53:13 · 6 answers · asked by Pat 2 in Chemistry

2007-06-23 22:51:49 · 2 answers · asked by badri r 1 in Engineering

I know the fundamental science behind a black hole, but I'm not sure what would happen in the above condition. This is a purely theoretical question, so don't bother pedantically pointing out that this could never happen because... or that black holes are permanent because... I'm not interested in that sort of answer. I'd like to hear what you think the outcome of the above condition would be. Destruction of Earth? Destruction of the solar system? Destruction of my road? What would happen to light and matter particles trapped and permanently falling on the event horizon once the hole winked out of existence? Would they be released? If so, what would be the nature of that release?

2007-06-23 22:48:41 · 15 answers · asked by wyntersfell 1 in Physics

I Know Distance.
I Know Time.

I want to know what the constant acceleration and decelleration would be if I left my destination and arrived at my destination at 0m/s.

For instance.
au = Astronamical Unit
ly= Light Year ( 63240au)

Distance = 10ly (632400au)
Time = 180 seconds

What is your acceleration/deceleration in AU/S/S

What equation would you need to work out acceleration if you accelerated and then decelerated at a constant rate for half of the journey?

2007-06-23 22:42:41 · 2 answers · asked by Valentine O 1 in Mathematics

i need 140 grams of it. If you know what it is, you probably know exactly why i want it. ;)

2007-06-23 22:40:01 · 2 answers · asked by bobertdude 2 in Chemistry

2007-06-23 22:30:41 · 4 answers · asked by Anonymous in Earth Sciences & Geology

thank you..........

2007-06-23 22:29:36 · 3 answers · asked by afifah awang soh 1 in Chemistry

I think it has not been tried in humans, but it is better to ask if anyone heard anything like that in humans or in mammals.

2007-06-23 22:26:34 · 3 answers · asked by Genetikçi 2 in Biology

Just wondering: It is a known fact that plasticizers (the stuff which makes bags and plastic bottles soft, and seals of screw caps tight) get absorbed into food and act as endocrine interruptors in the human body.
Is that absorption process temperature-dependent at all?
I mean, we store food in freezers in plastic stuff for a long time. If low temperatures don't slow down the transfer of endocrine interruptors, I won't use plastic anymore.
Does anybody know if it has that effect though?

2007-06-23 22:20:05 · 1 answers · asked by Tahini Classic 7 in Chemistry

2007-06-23 22:18:32 · 5 answers · asked by Anonymous in Zoology

center at (-5, -1); radius (square root of) 3

Problem is... How can you find/plot a square root?

2007-06-23 22:16:31 · 3 answers · asked by Belx2 2 in Mathematics

From a well-shuffled pack of cards (whatever that means!), what is the probability of finding JUST two cards, of the same rank (any rank), next to each other?

Or maybe I should have worded it as " what is the probability of finding AT LEAST two cards of the same rank next to each other?"

Either way, I have no idea how to tackle this, but my suspect intuition tells me the probability is > 0.5 from my son's practical experience.
Is this an impossible ask or are my probability skills waning?

2007-06-23 22:10:17 · 3 answers · asked by falzoon 7 in Mathematics

2007-06-23 22:05:03 · 8 answers · asked by nonothing 1 in Physics

Show examples, please.

2007-06-23 22:01:39 · 1 answers · asked by Anonymous in Chemistry

2007-06-23 21:57:08 · 6 answers · asked by AKL 3 in Physics

1. A can is 40 cm long, 30 cm wide, and 45 m high. If the density of matter is 1g/cm³, what is the mass of water inside the can in kilogram?
2. Show how a speed of 40 kilometers per hr. can be converted to meter per second.
3. A supersonic aircraft has a speed of 2,200 milesper hour. Find each speed in meter per second.

Please explain answers.

2007-06-23 21:55:58 · 5 answers · asked by christine b 1 in Physics

I know the answers (0, +/-60 and +/-180)...but i don't know the working. Can anybody help?

2007-06-23 21:51:03 · 5 answers · asked by Anonymous in Mathematics

I just can't figure it out,
Because if you take all the air out of any object, it turns to a small mass, or just it's shell?
...And there is still gravity here on earth..?
Can some-one help me with this...
...perhaps it is Rocket Science (smile)

2007-06-23 21:49:08 · 12 answers · asked by ? 6 in Astronomy & Space

2007-06-23 21:46:48 · 10 answers · asked by Anonymous in Astronomy & Space

2007-06-23 21:45:45 · 11 answers · asked by Anonymous in Mathematics