Science & Mathematics - 19 September 2007

I mean, you think you're coming here to gain some knowledge by asking a question, and all people do is call you names and act out of character on the internet.

Y! Answers needs to be shut down. And on my own accord. I'm cancelling my account.

Someone needs to stage a protest against either people bad mouthing others or Y! Answers intirely.

Peace.

2007-09-19 18:22:24 · 14 answers · asked by Anonymous in Astronomy & Space

2007-09-19 18:15:41 · 6 answers · asked by lindsey p 5 in Zoology

how do i differentiate this expression...

just the answer would do as well... to tell you the truth...

(sinx)^7

2007-09-19 18:15:23 · 8 answers · asked by vitania 2 in Mathematics

Are animal derived digestive enzymes (Pancreatin 4x) more beneficial than vegeterian digestive enzymes (derived from roots and bacteria) for people WITH BLOOD TYPE O? Does it have to do with the stomach acidity? Absorption? Utilization? Rate of reaction? Any suggestions??

2007-09-19 18:13:45 · 1 answers · asked by Anonymous in Medicine

2007-09-19 18:06:51 · 3 answers · asked by luvar s 1 in Earth Sciences & Geology

1. condenses in a flask, 2. becomes cloudy, 3. condenses in boiling flask, 4. becomes insoluble, and why?
Thank you so much.

2007-09-19 18:01:09 · 3 answers · asked by Anonymous in Chemistry

solve the system of xy = 1, x + y = a by using the identity:

((x -y) / 2)^2 = ((x + y) / 2)^2 - xy

??????? I have no idea ??????????

2007-09-19 18:00:57 · 7 answers · asked by busy bee 2 in Mathematics

2007-09-19 18:00:36 · 5 answers · asked by Annette 1 in Physics

I can never find one, please give me a link so i can buy one with a credit card

2007-09-19 17:57:06 · 1 answers · asked by Dean 1 in Mathematics

Is there a way of expanding the formula a/(b+c) into something I might be able to do algebra with? Thanks.

2007-09-19 17:56:08 · 4 answers · asked by Harb Frame 3 in Mathematics

2007-09-19 17:53:57 · 5 answers · asked by Annette 1 in Physics

where can i find pottasium nitrate in souther california

2007-09-19 17:40:25 · 2 answers · asked by Anonymous in Chemistry

2007-09-19 17:39:25 · 1 answers · asked by aldo c 1 in Physics

for chemistry

2007-09-19 17:38:38 · 4 answers · asked by SLIFOX 3 in Chemistry

write the equation of the line in slope- intercept form

2007-09-19 17:34:20 · 8 answers · asked by myownworkchief 2 in Mathematics

2007-09-19 17:30:21 · 9 answers · asked by stacy-ann c 1 in Zoology

2007-09-19 17:25:27 · 5 answers · asked by muhammad ibrahim 1 in Mathematics

ok, we know that stem cells from an embryo can become ANY of about 200 different cells for different organs. a person that has a degenerative disease wants stem cells from any embryo to regrow tissue, for instance, to cure the disease.

but if all of us have individual and unique DNA, making us exactly who we are, how does a stem cell taken from a "stranger" embryo grow into the cells that the sick person needs, fitting his own genetic profile? i.e., would not the donor's stem cells NOT work with the recipient's genome to make his own healthy tissue?

2007-09-19 17:22:31 · 5 answers · asked by Louiegirl_Chicago 5 in Medicine

Two dogs pull horizontally on ropes attached to a post. The angle between the ropes is 51.0°. If dog A exerts a force of 310 N and dog B exerts a force of 230 N, find the magnitude of the resultant force and the angle it makes with dog A's rope.
____N
____°.

okay I know to find the angle i take the arctan of (Fy/Fx) but heres the problem for the magnitude I am having trouble figuring it out, I know to find magnitude I would take the square of the x values and the y values and square root it to find the magnittude but in finding these x and y values. do I take the giving forces and dived by cos(51) for x and sin(51) for y? I tried this and I tried multiplying yet I still could not get the proper answer. and of course the book does not properly explain this problem only problems that relate.

2007-09-19 17:15:01 · 2 answers · asked by Walachka 3 in Physics

A soccer player kicks a rock horizontally off a 31.5 m high cliff into a pool of water. If the player hears the sound of the splash 3.6 s later, what was the initial speed given to the rock? Assume the speed of sound in air to be 343 m/s.
I don't get how to use the speed of sound...

The force exerted by the wind on the sails of a sailboat is 360 N north. The water exerts a force of 250 N east. If the boat (including its crew) has a mass of 270 kg, what are the magnitude and direction of its acceleration?

2007-09-19 17:14:19 · 1 answers · asked by christian8807 3 in Physics

An experimental rocket plane lands and skids on a dry lake bed. If it's traveling at 83.0 m/s when it touches down, how far does it slide before coming to rest? Assume the coefficient of kinetic friction between the skids and the lake bed is 0.710.

2007-09-19 17:11:59 · 1 answers · asked by Anonymous in Physics

Should'nt we all agree that humans can adapt to changes? Well what if humans first lived upon mars but eventually it fell apart or just died, and humans came to earth to find refuge. God could be the "thing or human" that brought us to earth, and we all thank God for "saving" us. Not only could earth be stronger but it could also be alot easier to live because of the water, and the water would not freeze on earth because it is close to the sun. Cyndonia is probably the last living city before humans left mars. OR there was probably a purge being waged by other life, and the adults sacrificed their children, sent them to eatrh, and "humans" had to learn all of life again. Adam and Eve could have been the adults of the pact, and or Go could have been too. What do you think?

2007-09-19 17:11:58 · 9 answers · asked by zombiebreath 2 in Astronomy & Space

2007-09-19 17:10:06 · 4 answers · asked by chickem 4 in Weather

any simple answers are appreciated.

2007-09-19 17:09:55 · 3 answers · asked by Anonymous in Physics

Total molar concentration of ions in, assuming complete dissociation.

.750 M solution of K2CO3

.355 M Solution of AlCl3

2007-09-19 17:09:55 · 1 answers · asked by yankeesruleee 2 in Chemistry

well iam doing this lecture competition ..
and my topic is prime numbers.. so do help me in giving some info about them ..

2007-09-19 17:07:45 · 1 answers · asked by Timothy P 1 in Mathematics

Anyone?..

2007-09-19 17:07:38 · 4 answers · asked by Romina 3 in Physics

Alright so the problem is as follows...

x+2 / 2x-3 > ((with line under it)) 1

I can get pretty far into solving it...

(x+2 / 2x-3) - (2x+3 / 2x +3) >line 0

5 - x / 2x - 3 >line 0

then theres where i get stuck... can someone explain where the answer

3/2 < X < 5 comes out of that?

2007-09-19 17:07:00 · 1 answers · asked by Anonymous in Mathematics

Life cycle of a maggot

2007-09-19 17:03:46 · 14 answers · asked by duh?? 2 in Zoology

2007-09-19 17:00:18 · 2 answers · asked by Rachel V 1 in Mathematics