Science & Mathematics - 2 November 2006

2006-11-02 13:54:23 · 8 answers · asked by aprilrose 1 in Earth Sciences & Geology

2006-11-02 13:51:52 · 2 answers · asked by last3member2002 1 in Chemistry

2006-11-02 13:51:01 · 6 answers · asked by Anonymous in Earth Sciences & Geology

2006-11-02 13:50:11 · 10 answers · asked by Peter M 1 in Astronomy & Space

A) anatomy
B) cell biology
C) chemistry
D) histology
E) physiology

2006-11-02 13:48:07 · 3 answers · asked by Anonymous in Biology

2006-11-02 13:45:54 · 3 answers · asked by last3member2002 1 in Earth Sciences & Geology

2006-11-02 13:43:02 · 14 answers · asked by zhaine 2 in Chemistry

2006-11-02 13:42:23 · 2 answers · asked by Anonymous in Biology

2006-11-02 13:41:16 · 8 answers · asked by Cool2Fool 1 in Biology

This bugs me as how can they say we have molten rock in the middle, different layers and etc. when no one has actually been inside..

2006-11-02 13:38:49 · 12 answers · asked by Anonymous in Earth Sciences & Geology

is it light-colored ash, or light-colored cinder, or dark-colored ash, or dark-colored cinder, or absent?

2006-11-02 13:37:46 · 2 answers · asked by themadman 2 in Earth Sciences & Geology

DR says
create a sckeleton program to
Find the mode (number that occurs most often), for example,
1, 1, 1, 2, 3, 3, 4, 5
1 is the mode

what if the case was as above

2006-11-02 13:37:24 · 1 answers · asked by Rami 5 in Mathematics

Element X has 2 main isotopes, the wighted avg. mass of element X is found to be 26.73 amu. Isotopes A is found to have a mass of 23.4 amu and isotopes B is =27.9 amu. What are the precentage of the isotopes?

My Calculations:
23.4A+27.9B=26.73
A+B=1 A= 1-B
23.4(1-B)+27.9B=26.73
23.4+23.4B +27.9B=26.73
4.5B/4.5=3.3/4.5

B= 0.73 = 73%
A=1-B
A=1-0.73 = 0.27 = 27%

I copied this from the board, I understand it but my only problem is how I would figure that A=1-B? Also is there sites were I would find similar problems?

2006-11-02 13:37:19 · 2 answers · asked by Sophie S 1 in Chemistry

Please leave a website if you have one ot give. I get extra credit If I turn it in 11/3

2006-11-02 13:35:34 · 4 answers · asked by Maddie 2 in Medicine

I need this answer right away so please help me......first person to answer gets 10 points

2006-11-02 13:34:54 · 2 answers · asked by ThisHotty 1 in Geography

i heard a born child has 300 bones but a man has only 206 bones.i dont know how it changes.........

2006-11-02 13:33:09 · 7 answers · asked by Aravind 1 in Biology

I am researching this subject for a science project.... so please be as descriptive as you can. >Plz...

2006-11-02 13:31:17 · 9 answers · asked by Anonymous in Other - Science

yeah division

2006-11-02 13:30:23 · 15 answers · asked by Caroline M 2 in Mathematics

A. It is caused by an unstable nucleus changing to become more stable.

B. It involves the release of particles and energy

C. the most common kinds of rays emitted are alpha rays, gamma rays and beta rays


True or False
When a radoactive atom emits an alpha particle, it is changed to an atom with a higher mass number and a lower atomic number

2006-11-02 13:30:10 · 2 answers · asked by cetinnovations 1 in Chemistry

2006-11-02 13:29:28 · 1 answers · asked by wasdocdb 2 in Physics

2006-11-02 13:29:19 · 12 answers · asked by praachi 1 in Mathematics

At the annual High school Parents' Dance contest, the ages of the winners were two smallest consecutive integers whose squares differ by more than 100. What is the least possible sum of the ages of the two winners?

Kind of tricky.
Thanks

2006-11-02 13:29:19 · 7 answers · asked by babigurl34 2 in Mathematics

I'm struggling, can you help me please? Thanks a ton.

18. Suppose that f '(n) (a) - (the n-th derivitive of f at a) - and g'(n) (a) exist. Prove Leibniz's formula:
(f * g)'(n) (a) = Sigma, k = 0 to n, of: (n choose k) f '(k) (a) * g'(n-k) (a)

22.a. The number a is called a double root of the polynomial function f if f(x) = (x-a)^2 * g(x) for some polynomial function g. Prove that a is a double root of f if and only if a is a root of both f and f '
b. When does f(x) = ax^2 +bx + c (a not equal to 0) have a double root? What does the condition say geometrically?

27. Suppose f is differentiable at 0, and that f(0) = 0. Prove that f(x) = x*g(x) for some function g which is continuous at 0. Hint: What happens if you try to write g(x) = f(x) / x?

Thanks again!

2006-11-02 13:26:21 · 1 answers · asked by Andrew H 1 in Mathematics

2006-11-02 13:25:42 · 2 answers · asked by yesmaam 2 in Medicine

at the bottom. The inclined plane makes a 28.8 deg. angle with the horizontal and is l=3.03 m long. The mass of the block is m=2.51 kg.

What is the coefficient of friction between the block and the plane?

2006-11-02 13:24:01 · 5 answers · asked by drdagher89 2 in Physics

question reads: the cost of priniting the school yearbook is $11,000 for 200 copies or $24,500 for 500 copies. If the printing cost is a linear function of the number of copies printed, find the cost of printing 800 copies. show all steps used to solve.

2006-11-02 13:23:06 · 3 answers · asked by Anonymous in Mathematics

does anyone know why hydrogen perooxide is harmful to the cell and does anyone have a link that has a list of chemical properties of catalase? thnx

2006-11-02 13:20:58 · 8 answers · asked by Wheeee B 1 in Biology

Im not very creative, so i need ideas on what i should useto make my atom model out of!

thanks!
=)

2006-11-02 13:20:52 · 3 answers · asked by kimmiee 1 in Physics

Which would have a greater focal length and why? a thin or thick diverged lens?

thankyou

2006-11-02 13:19:31 · 1 answers · asked by Anonymous in Physics

2006-11-02 13:19:30 · 2 answers · asked by Anonymous in Chemistry