Science & Mathematics - 1 February 2007

2007-02-01 13:04:14 · 4 answers · asked by naeemah s 1 in Physics

and.....

Calculate the area of a rectangle that has a width that measures 10s^4t and a length of 40s^3t.


thank you

2007-02-01 13:04:09 · 1 answers · asked by J 6 in Mathematics

this is for science! please help!

2007-02-01 13:02:21 · 5 answers · asked by Jenny 1 in Earth Sciences & Geology

2007-02-01 13:01:36 · 6 answers · asked by Anonymous in Biology

3(x-4)^2-72=0

2007-02-01 13:01:36 · 4 answers · asked by Mayonaise 6 in Mathematics

how come when it is freezing temperature and there is precipitation it is rain instead of snow?

2007-02-01 13:01:08 · 5 answers · asked by Anonymous in Weather

2007-02-01 13:00:11 · 2 answers · asked by ♥::♥::♥ 1 in Earth Sciences & Geology

in biology we are studying evolution and Darwin's theory. We have to do a research paper. One of the questions is "Why do Scientists believe that there was no Oxygen gas in Earth's Early atmospher." I know how we oxygen was created, but I can't find why scientists think it didn't exist. Does anyone know this answer?
If you do, please try and include your scource (my bibliography)

thanks!

2007-02-01 12:59:36 · 3 answers · asked by Anonymous in Biology

2007-02-01 12:59:14 · 1 answers · asked by LOVE♥ 1 in Earth Sciences & Geology

Chinchilla coat color in mice is due to a recessive allele (c^ch) and the normally pigmented coat, called "agouti," is due to the dominate allele. Mice heterozygous for chinchilla coat color are mated to homozygous chinchilla (c^ch/ c^ch) mice, and the resulting progeny include both agouti and chinchilla phenotypes. if one takes one of the agouti progeny and it mates it into one of its chinchilla sibs, the expected genotypic ratio among their offspring is - (A) 3: 1, (B) 1:1, (C) 9:3:3:1, (D) 1:2:1, (E) none of these.

2007-02-01 12:59:04 · 3 answers · asked by whatsupman 1 in Biology

2007-02-01 12:58:19 · 2 answers · asked by «Juke» 1 in Earth Sciences & Geology

The answer is supposed to be 73% but I dont know how they got that.

2007-02-01 12:58:04 · 4 answers · asked by Mayonaise 6 in Mathematics

i need help with Equations with trinomial squares
problems like

(x-5)squared = 49

the answer to this is 12,-2 but i don't understand how my book arrived at that. plz explain

also this too:
(x+3)squared = 100

and:
(x-1)squared =73.5

2007-02-01 12:57:58 · 5 answers · asked by Anonymous in Mathematics

How are vibrations made? I have had this arguement with my brother, he says that IF you could walk and make no sound doing it would you still create vibrations that could be transfered and felt through the ground?

2007-02-01 12:56:55 · 4 answers · asked by David D 1 in Physics

I know this1 atm / (meter^3) = 101 325 m^-4 kg s^-2


but Joules is 1 atm / (meter^3) = 101 325 m^4 kg s^-2

I am finding work under a graph that is y=atm and x=m^3 and I found the area to be 1.375 atm/m^3 but I need it in Joules!

2007-02-01 12:56:55 · 2 answers · asked by bippidibopiddi 2 in Physics

A decomposition reaction has a rate constant of 0.0012 yr^-1. (a) What is the half-life of the reaction? (b) How long does it take for [reactant] to reach 12.5% of its original value?

A decompoition reaction has a rate constant of 0.008. What is it's half-life value? (Show how you got it)

2007-02-01 12:55:31 · 2 answers · asked by Cupcake 2 in Chemistry

2007-02-01 12:55:27 · 1 answers · asked by Anonymous in Chemistry

2007-02-01 12:55:20 · 5 answers · asked by Sue 1 in Mathematics

my friend has the TI-89 calculator and I have the TI-83 calculator, his calculator is better than mine because it has more applications, he can solve calculus problems like (limits). does anyone know if there is an application for the TI-83 that helps me to find LIMITS and from where can I download it.. Thank you

2007-02-01 12:55:17 · 1 answers · asked by Anonymous in Mathematics

What buoyant force is exerted on the bottom of a flat 5 m long, 2 m wide, and .2 m under the surface of pure water? the desnsity of water is 1000 kg/m^3

2007-02-01 12:51:38 · 4 answers · asked by NoturTypicalBI! 3 in Physics

use inductive reasoning to describe each pattern then find the next 2 numbers in each pattern.

4, 6, 9, 13 1/2


pleaaaaase help!!!

2007-02-01 12:50:22 · 4 answers · asked by Anonymous in Mathematics

The prairies in North America are on the Great Plains in the central U.S. and in Canada in southern Alberta, Saskatchchewan, Manitoba. Similar grassland are found in Argentina in South America, in South Africa, and in middle latitudes of Eurasia. What are these grasslands called on each continent? To what agricultural uses are such grasslands put?

2007-02-01 12:49:47 · 5 answers · asked by AwesomeJoey 1 in Geography

2007-02-01 12:49:47 · 4 answers · asked by Dan.E.P 1 in Botany

2007-02-01 12:49:36 · 7 answers · asked by Anonymous in Biology

2007-02-01 12:48:04 · 2 answers · asked by kruk189 1 in Mathematics

Where is it?

2007-02-01 12:48:03 · 7 answers · asked by Suman 1 in Geography

2007-02-01 12:47:43 · 5 answers · asked by Anonymous in Biology

By algae I mean Carrageenan, Alginates, and Beta Carotene.

2007-02-01 12:46:46 · 4 answers · asked by ♥Whatever♥ 1 in Biology

2007-02-01 12:46:07 · 3 answers · asked by Dave 4 in Mathematics

aren';t they the same kinda? They both have biology, chemistry, proteins, enzymes. Also which science major is harder and better for med school?

2007-02-01 12:45:36 · 2 answers · asked by avalentin911 2 in Other - Science