Science & Mathematics - 12 December 2006

2006-12-12 09:35:05 · 1 answers · asked by Anonymous in Biology

True or False---

Two distinct lines can share at most one point.

2006-12-12 09:33:26 · 7 answers · asked by Me 1 in Mathematics

2006-12-12 09:33:23 · 8 answers · asked by raytheham 1 in Geography

2006-12-12 09:33:14 · 3 answers · asked by tonymag28 2 in Mathematics

where can I find discs roughly 2 to 4 inches (5 to 10 centimeters) of boron carbide, possibly with a 1/4 to 1/2 inch hole in it. Preferably least 100 count for under 50 dollars

I am also interested in Kevlar on the cheap

2006-12-12 09:33:02 · 1 answers · asked by armorsmith42 2 in Engineering

For science, we are doing an unknown mineral identity lab. I have narrowed it down to eaither natrolite orthoclase, although I think it could be serpertie or stilbite. If there is a web site to find this out, please tell me. Other wise, heres what I found out
color-dark oragne, tan, green
streak-white
luster- silkey
fluorescence- no
double refraction- no
specific gravity- 2.09
hardness- 6
crystal system- Monoclinic
Fracture- Hackly
Magnetism- none
not acidic

Hope that helps, a few thigns can varie up there like luster and color, and please help me identify this!

2006-12-12 09:31:55 · 3 answers · asked by steveo 3 in Earth Sciences & Geology

2006-12-12 09:31:52 · 2 answers · asked by bltzburgher05 1 in Engineering

How do you factor out 1+x+x^2+x^3+x^4+x^5 using only polynomials with integer coefficients?

2006-12-12 09:31:49 · 3 answers · asked by Anonymous in Mathematics

why do hosptal workers need to are blood types?

2006-12-12 09:30:55 · 15 answers · asked by shameer g 1 in Medicine

What are all the positive integral values of x for which the expression (x^3-12)/ x-4 has an integral value?

What does integral mean?

2006-12-12 09:28:56 · 4 answers · asked by Anonymous in Mathematics

2006-12-12 09:28:08 · 1 answers · asked by Anonymous in Biology

i need to no wat genes contol soon! thanx

2006-12-12 09:27:48 · 3 answers · asked by Z 2 in Biology

These are done the Redox Way....
8) Bi2 S3 + HNO3 >>>> Bi (NO3)3 + NO + S + H2O
9) K2 Cr2 O7 + HCl >>>> KCl + CrCl3 + Cl2 + H20
10) HgS + HCl + HNO3 >>>> Hg Cl2 + NO + S + H2O

2006-12-12 09:25:48 · 1 answers · asked by truckin_90 2 in Chemistry

2006-12-12 09:24:24 · 5 answers · asked by veronica l 1 in Mathematics

I know how to work with Radical Equations. I just need some help with this one:

It is asking for the area of a Rhombus, with the equation given:

Area = 1/2(D1)(D2)

D1 being √x + 2
D2 being √x - 1

The area is said to be 9, so I know that when you plug in the values given the final equation should look like this:

9 = 1/2(√x + 2)(√x - 1)

The answers are said to be 3 and 6. I am stuck on what to do next. Should I act as if I am using two binomials? (√x + 2)(√x -1) = x - 1√x + 2√x - 2, which equals x + 1√x - 2.

Can anyone offer some advice that will lead me to the correct path?

2006-12-12 09:24:12 · 2 answers · asked by Anonymous in Mathematics

what does a rhombus with two right angles look like?

2006-12-12 09:23:59 · 19 answers · asked by Desperate_Hottie16 1 in Mathematics

2(x-1)^2 - 3= 47

2006-12-12 09:23:34 · 10 answers · asked by crazylifer 3 in Mathematics

Why is that?

2006-12-12 09:22:58 · 11 answers · asked by theresa_xo92 2 in Mathematics

It would certainly quiet the conspiracy theroists who insist the moon landing was filmed on earth.

2006-12-12 09:21:55 · 11 answers · asked by Jake M 2 in Astronomy & Space

Select the monomer that would produce the following polymer (Teflon).

http://capa.chem.sunysb.edu/nan/teflon.gif

a) CF2=CF-CF3

b) CF3CF3

c) CF2Cl2

d) CF2=CF2

e) CF2=CF-CF=CF2


Enter a letter with no parentheses.

2006-12-12 09:20:27 · 4 answers · asked by link332456 1 in Chemistry

Can anyone tell me for sure whether a Rat is just a big Mouse or a Mouse is a smaller Rat..

2006-12-12 09:19:56 · 7 answers · asked by pop c 2 in Zoology

2006-12-12 09:19:56 · 3 answers · asked by tonymag28 2 in Mathematics

if one leg is 4 feet and the other one is 12 feet what is the hypotenuse

2006-12-12 09:19:29 · 14 answers · asked by shawn 1 in Mathematics

i heard somewhere it was and i wanted to be sure.

2006-12-12 09:18:33 · 16 answers · asked by Nesha 2 in Chemistry

2006-12-12 09:17:29 · 7 answers · asked by little lovely 1 in Earth Sciences & Geology

I'll be in Hawaii from Dec. 15 - 26 and I would dearly love to visit the Observatories while I'm there. I need to know when they'll be closed for the holidays. Thanks!

2006-12-12 09:15:57 · 1 answers · asked by Anonymous in Astronomy & Space

I always hear about how stem cell research is bad because human life is valuable. Im not for or against anything, but what does it mean when people say that human life is too valuable and that an embryo shouldn't be destroyed. How exactly is life killed when performing stem cell research?

2006-12-12 09:15:46 · 4 answers · asked by Anonymous in Biology

2006-12-12 09:15:23 · 11 answers · asked by chris 2 in Mathematics

2006-12-12 09:15:15 · 20 answers · asked by Petaloutha 2 in Mathematics

Which of the following are TRUE statements about proteins ?

a) The shape and function of a protein is determined only by the different types of amino acids that make up the chain.
The order they appear in is not a factor

b) The sequence of amino acids that make up a protein are known as the primary structure of the protein

c) Proteins are long complex molecules that have no regular structure. Even the presence of hydrogen bonds is not enough to introduce structure

d) The secondary structure of a single protein molecule is created by hydrogen bonds between an amine group and a lone pair of electrons on an oxygen molecule, both part of the peptide bond

e) One type of tertiary structure found in proteins is α-helix

f) The structrure of a protein that results from a combination of covalent and noncovalent bonds between the side chains of the different amino acids is called the tertiary stucture

2006-12-12 09:14:26 · 4 answers · asked by link332456 1 in Chemistry