Science & Mathematics - 14 October 2006

i need to know them for aluminum
are the first ionization energy, atomic number, symbol, electronegativity, density, and the atomic radius either chemical or physical?
i need to know this for school, so what would my chem teacher want me to write or physical and chemical properties?

2006-10-14 08:02:12 · 3 answers · asked by um yea hi 4 in Chemistry

2006-10-14 07:59:57 · 4 answers · asked by suvs 5 in Geography

2006-10-14 07:59:14 · 2 answers · asked by declan d 1 in Chemistry

Thank you who ever can answer this difficult ?

2006-10-14 07:59:09 · 3 answers · asked by The word Fan! 1 in Earth Sciences & Geology

2006-10-14 07:55:36 · 21 answers · asked by Kerry C 1 in Astronomy & Space

1. Suppose that the radius and Volume (V=4/3 pi.r^3) of a sphere are differentiable functions of t. Write an equation that relates dV/dt to dr/dt.

2. If a and be are legs of a right triangle, and c is the length of the hypotenuse. How is dc/dt related to da/dt and db/dt?

3. The range of a projectile is related to the initial velocity V and projection angle (theta) by R=((v^2)sin2(theta)/g), (g is cons) How is dR/dt related to dv/dt and d(theta)/dt if neither v nor theta is cons.

2006-10-14 07:55:14 · 2 answers · asked by Anonymous in Mathematics

Hi, I need
1)information about the operation of sound level meters (websites, pdfs, ...)
2)If you can also, I want hints on how to write a MATLAB program (or a program in any other language) that measures the sound pressure level.

2006-10-14 07:54:30 · 1 answers · asked by Vendetta 2 in Engineering

how do you solve

2/x+1/m=3/y for m

when i solved it i got m=xy but i think that is wrong

2006-10-14 07:54:06 · 5 answers · asked by Anonymous in Mathematics

Which of the following are correct classifications of the give compounds ?


a) C2H4 : alkene


b) C2F4 : alkyne


c) The straight chain compound C4H8 : alkane


d) The straight chain compound C3H4Cl2 : alkene

2006-10-14 07:50:21 · 2 answers · asked by MARK 2 in Chemistry

2006-10-14 07:48:51 · 5 answers · asked by sara2005_unique 1 in Physics

2006-10-14 07:47:28 · 1 answers · asked by Anonymous in Chemistry

2006-10-14 07:47:12 · 5 answers · asked by Precious 2 in Astronomy & Space

2006-10-14 07:46:33 · 16 answers · asked by Kerry C 1 in Astronomy & Space

after they only took a few small parts from them. Couldnt they use the hides or something?

2006-10-14 07:38:53 · 9 answers · asked by Big hands Big feet 7 in Astronomy & Space

2006-10-14 07:31:13 · 16 answers · asked by Thomas P 3 in Physics

2006-10-14 07:29:45 · 12 answers · asked by Anonymous in Medicine

2006-10-14 07:26:33 · 11 answers · asked by Kristen R 1 in Mathematics

what does tiger eat in the wild

2006-10-14 07:23:24 · 11 answers · asked by Anonymous in Zoology

2006-10-14 07:23:21 · 5 answers · asked by gourshweta 1 in Mathematics

2006-10-14 07:22:13 · 11 answers · asked by gourshweta 1 in Mathematics

2006-10-14 07:21:25 · 5 answers · asked by gourshweta 1 in Mathematics

How do I algebraically manipulate

(u+2) / (u^2+u+1) to become 1 / [((u+1/2)^2) + 3/4] ?

I need to get (u+2) / (u^2+u+1) into the form 1 / (a^2 + b^2) so I can use arctan to integrate.

One suggestion I was given was that :
(u+2)/(u^2+u+1) = 1/2(2u+1)/(u^2+u+1)+3/2(u^2+u+...

I completed the square for the denominator and was able to get the sum of 2 quantities squared. I can't figure out how to get the denominator to just 1.

2006-10-14 07:19:59 · 3 answers · asked by PuzzledStudent 2 in Mathematics

2006-10-14 07:18:31 · 4 answers · asked by gourshweta 1 in Mathematics

http://iran-dl.com

2006-10-14 07:13:47 · 7 answers · asked by Anonymous in Mathematics

1. each chair requires 4ft of oak & 3ft of pine, while each table requires 8 ft of oak and 2ft of pine. hal has 52ft of oak and 23ft of pine how many chairs & tables can he build?

2. Sherdans monthly bill includes a fixed charge, which is the same eac month and an additional charge for toll calls. One month the bill was $22, which included charges for 5 toll calls. the following month the bill was $26, which included charges for 7 toll calls. find the fixed charge and the average charge per toll call

2006-10-14 07:13:02 · 4 answers · asked by buttbutt18 2 in Mathematics

i need to know them for aluminum, but if you could just give me how to find them, that would be great

2006-10-14 07:09:17 · 7 answers · asked by um yea hi 4 in Chemistry

2006-10-14 07:09:04 · 11 answers · asked by bayansh_sha 2 in Other - Science

??? y = -16x + 64 ???

2006-10-14 07:08:58 · 6 answers · asked by Olivia 4 in Mathematics

2006-10-14 07:08:08 · 16 answers · asked by Anonymous in Zoology

Relativity

2006-10-14 07:05:40 · 8 answers · asked by Anonymous in Physics