Science & Mathematics - 17 December 2006

go through meiosis or mitosis? or both?

2006-12-17 09:11:56 · 3 answers · asked by Lili 2 in Biology

2006-12-17 09:11:27 · 9 answers · asked by styles4u 4 in Mathematics

thanks for the help...

2006-12-17 09:11:10 · 2 answers · asked by ryboyin 4 in Geography

HELP!!! I can't these word problems.

a) Between 1989 and 1997 the percentage of households with incomes of $100,000 or more is modeled by f(s) .071x squared - .426x+8.05, where x=0 represents the year 1989. Based on this model when did the percent of people in this income level reach its minimum?

b) A rain gutter is to be made up of retangular aluminum sheets 12 inches wide by turning up the sides egdes 90 degree. What depth (of the edges) will provide a maximum cross sectional area and thereby provide for the greatest flow of water?

2006-12-17 09:10:50 · 1 answers · asked by tmh01854 2 in Mathematics

2006-12-17 09:10:47 · 3 answers · asked by Stephanie S 1 in Geography

A 3.20-g sample of a salt dissolves in 9.10 g of water to give a saturated solution at 25˚C. What is the solubility (in g salt/100g of H2O) of the salt?

2006-12-17 09:09:54 · 4 answers · asked by Anonymous in Chemistry

2006-12-17 09:09:46 · 10 answers · asked by <3 Love. 1 in Mathematics

2006-12-17 09:08:02 · 15 answers · asked by bella 2 in Mathematics

2006-12-17 09:07:55 · 7 answers · asked by rodney m 1 in Physics

:D

2006-12-17 09:07:08 · 9 answers · asked by XkiD 1 in Chemistry

what is the final temperature when a 3kg gold bar at 99 degrees celsius is dropped into .22kg of water at 25 degrees celsius?

2006-12-17 09:06:07 · 2 answers · asked by SHAKIL A 1 in Physics

The cube root of four to the six y power

2006-12-17 09:05:16 · 1 answers · asked by Lawanna D 1 in Mathematics

http://i143.photobucket.com/albums/r147/rAOL87/circuit1.jpg

Above is a given circuit in which I need to solve for Vb, I1 and I2. I am given Vcc, R6, R7, and Beta. If anyone knows the steps to solving this problem, could you please post them?

thanks in advance!

2006-12-17 09:03:59 · 1 answers · asked by Anonymous in Physics

http://i143.photobucket.com/albums/r147/rAOL87/circuit1.jpg

Above is a given circuit in which I need to solve for Vb, I1 and I2. I am given Vcc, R6, R7, and Beta. If anyone knows the steps to solving this problem, could you please post them?

thanks in advance!

2006-12-17 09:03:46 · 3 answers · asked by Anonymous in Engineering

2006-12-17 08:59:52 · 5 answers · asked by Anonymous in Chemistry

I know that they're supposed to be brighter than other kinds, and you need them to make white light, but what are some practical applications for them?

2006-12-17 08:58:02 · 5 answers · asked by Anonymous in Engineering

try to do an experiment about hydrogen embrittlement, but I don't know how to prepare the solution. The equation is FeS+HCl-->H2S+FeCl. how to prepare it? and how to find out the exact volume of the chemical thing to be use and the rate of H2s to be produce?

2006-12-17 08:56:25 · 4 answers · asked by rezasafa2000 1 in Chemistry

just assume he is in a zoo or in a circus etc....

2006-12-17 08:54:48 · 3 answers · asked by cookiesanddreams 1 in Zoology

If there are an infinite number of stars out there in this great big universe, then where are all the alien races? Why have they not contacted us yet? Why are we not picking up any ET signals? This can only mean one thing: We ARE alone in this universe. It must truly be a lonely place indeed. If not, then we are the only intelligent beings in existence? This'll also be pretty lonely for us. Does any1 agree?

2006-12-17 08:53:31 · 14 answers · asked by patfong07 1 in Astronomy & Space

Just wondering cos Twister was on TV earlier lol- do people actually get sucked INTO big tornadoes or just get blown around by them? If so has anyone ever been sucked into one (aside from Dorothy) and survived? Or are they kind of flung out when the storm dissipates and could not survive the crash? I'm really interested now!!!

2006-12-17 08:51:20 · 6 answers · asked by Anonymous in Weather

Start point is the mouth and absorbed by glucose. Active enzymes, their location, and effect on the starch / sugar molecule.

2006-12-17 08:50:09 · 2 answers · asked by Help Me 1 in Biology

2006-12-17 08:49:47 · 1 answers · asked by Eugene D 1 in Mathematics

a. Write a molecular equation for the reaction.
b. Which of the possible products is the precipitate, and how do you know?
c. Write a complete ionic equation for the reaction and identify the spectator ions in the equation.
d. Write a net ionic equation for the reaction between lead(II) nitrate and potassium iodine.

2006-12-17 08:46:34 · 2 answers · asked by kittyvamptress 2 in Chemistry

Roy says he has more nickels than dimes. id he has 5.20, how many of each coin does he have?

2006-12-17 08:45:45 · 3 answers · asked by greatneg 1 in Mathematics

Quadratic functions = confusing .. can you tell?



11. x^2 - 6x + 6 = 0

12. x^2 + 2x = 15

13. x^3 + 2x - 5 = 0

14. 2x^2 + 8x - 10 = 0

15. 4x^2 + 4x = 3


Anyone who actually can solve these problems is my official hero =). lol. Because I have a quiz soon and i'm tryin to study these problems. But it doesn't help when you don't have the right answers. haha.


Thanks a bunch guys.

2006-12-17 08:45:17 · 8 answers · asked by Anonymous in Mathematics

Tan A = -2/3, 90 degrees < A < 180 degrees. What fomula do I use to find the exact value of the remaining trigonometirc function?

2006-12-17 08:44:03 · 4 answers · asked by . 2 in Mathematics

the cube root of (x to the sixth power times y to the negative four power)

2006-12-17 08:43:56 · 1 answers · asked by Lawanna D 1 in Mathematics

4/Q^2 + 4P/Q-P - 4/Q

thanks for any help!

2006-12-17 08:41:35 · 1 answers · asked by katelin e 1 in Mathematics

i think my nieghbor is planing to break into my house, i over heard them talking the other day and saying that there friend is going to condem items from my house, please help me i will be greatful forever!!!

2006-12-17 08:39:25 · 22 answers · asked by david p 1 in Paranormal Phenomena

????

2006-12-17 08:38:46 · 5 answers · asked by smellykellygirl001 1 in Earth Sciences & Geology