Science & Mathematics - 28 December 2006

I'm sure atoms have a shelf life of some kind, but i was wondering how long it would take from say birth, before all of the atoms of which you were made of would of been replaced?

This is interresting because it would mean that although you still exist you arte infact made of completely new matieral, you are a new you!

2006-12-28 22:31:15 · 8 answers · asked by jamieo1977 1 in Physics

My mom always told me this, but I really don't know. Just wondering what other people think.

2006-12-28 22:27:47 · 9 answers · asked by wolfchild168 2 in Biology

2.3z=13.8 Solve for Z...
I need to explain how you determin the answer. Numbers and/or words have to be used to support the explanation

2006-12-28 22:22:56 · 9 answers · asked by CSIGrandma 2 in Mathematics

I would like to be able to go back several years and compare photos.

2006-12-28 22:22:09 · 1 answers · asked by anybody 3 in Earth Sciences & Geology

The polynomial x^3 + ax^2 + bx +c os exactly divisible by x^2 -x-2. Find the value of a+b.
The polynomial 2x^2 + bx -3 has a factor x -a, where a is not equal to 0.Express b in terms of a.

2006-12-28 22:21:31 · 3 answers · asked by iqnabeel 1 in Mathematics

2006-12-28 22:20:43 · 17 answers · asked by gorgeousfluffpot 5 in Weather

2006-12-28 22:14:43 · 5 answers · asked by Anonymous in Geography

What is the integral of f'(x)=sin((7*x^3)/(2*x^(-2)))^(-2) with respect to x? You need not post how to do the solution, unless you want to be super helpful. I've gotten a lot of different answers, and someone told me that there's some gamma thing going on and branch cuts in the complex z plane and this wierd stuff.

2006-12-28 22:11:19 · 5 answers · asked by Sean 2 in Mathematics

the valley of giants in australia

2006-12-28 22:09:05 · 1 answers · asked by Anonymous in Geography

2006-12-28 22:05:48 · 11 answers · asked by Anonymous in Weather

2006-12-28 22:05:47 · 8 answers · asked by Anonymous in Astronomy & Space

The expression ax^3 + bx^2 - 5x + 2a is exactly divisible by x^2 - 3x - 4 . Calculate the value of a and b.and factorise the expression completely.

2006-12-28 21:59:17 · 2 answers · asked by iqnabeel 1 in Mathematics

2006-12-28 21:58:55 · 22 answers · asked by prince s 1 in Chemistry

2006-12-28 21:58:25 · 1 answers · asked by Anonymous in Engineering

2006-12-28 21:52:47 · 3 answers · asked by Anonymous in Geography

2006-12-28 21:52:28 · 8 answers · asked by Rick G 4 in Biology

This was asked by one of my alevel biology students when doing a practical on red onion cells.

2006-12-28 21:50:11 · 2 answers · asked by simon r 1 in Biology

2006-12-28 21:46:20 · 7 answers · asked by Anonymous in Zoology

2006-12-28 21:42:27 · 4 answers · asked by mazza 1 in Mathematics

process of production.

2006-12-28 21:38:42 · 5 answers · asked by Moon 1 in Chemistry

can you solve this lim ((x)^2/3-2(x)^1/3+1)/(x-1)^2 when x--->1

2006-12-28 21:35:56 · 3 answers · asked by whoman 1 in Mathematics

I think human kind is a non certainity existance. When Fuzzy Logic is a great tool to solve such problems, then think how it will be usefull to be used in product design.wooow

2006-12-28 21:35:17 · 3 answers · asked by mhrhashemi 3 in Engineering

A certain sum of money is invested at 10%. Twice that amount is invested at 8%. The total amount of interest from both investments is $91. How much is invested at 8%.

Solution please?

2006-12-28 21:32:51 · 2 answers · asked by belmeen 3 in Mathematics

i want only resons

2006-12-28 21:32:47 · 5 answers · asked by venkat r 1 in Physics

Can anyone solve:::::::
The polynomial 2x^3 + x^2 + px - 4 has a factor x - 2.Find p. Show that 2x + 1 is also a factor. And deduce the third factor.

The expression ax^3 + bx^2 - 5x + 2a is exactly divisible by x^2 - 3x - 4 . Calculate the value of a and b.and factorise the expression completely.

2006-12-28 21:32:36 · 2 answers · asked by iqnabeel 1 in Mathematics

Have been looking at saturn recently (the only planet to be seen across the norther winter skies) I reside in vancouver, British Columbia.

I wonder how to locate the moons of saturn since I am unable to find them.

Also Im using a 10mm eye piece and my objective is 130mm but I do not see the details of the planets very clearly. Would barlow help and is there anything else I can do to optimize the image I see to observe more details of planetary surfaces. ?

Thanks

2006-12-28 21:28:28 · 3 answers · asked by planck12 1 in Astronomy & Space

2006-12-28 21:28:15 · 4 answers · asked by NEO 1 in Physics

IDOING COLLEGE MATH

2006-12-28 21:27:51 · 7 answers · asked by love 1 in Mathematics

2006-12-28 21:27:29 · 1 answers · asked by NEO 1 in Physics

this is boilogical terms

2006-12-28 21:13:18 · 11 answers · asked by nandu 1 in Zoology