Science & Mathematics - 15 January 2007

math 112

2007-01-15 13:08:50 · 2 answers · asked by Anonymous in Mathematics

2007-01-15 13:08:04 · 5 answers · asked by Anonymous in Mathematics

2007-01-15 13:05:37 · 5 answers · asked by brandon l 1 in Zoology

math 112

2007-01-15 13:05:29 · 10 answers · asked by Anonymous in Mathematics

Where does protein-building begin?
A.
cytoskeleton

B.
enzyme

C.
cell membrane

D.
DNA

Thanks for any help.

2007-01-15 13:05:09 · 6 answers · asked by z1 2 in Biology

2007-01-15 13:04:30 · 5 answers · asked by fortyounce95 2 in Mathematics

sec²(x)+csc²(x)=(tan(x)+cot(x))²

2007-01-15 13:03:42 · 6 answers · asked by Anonymous in Mathematics

what types of transformations describe the movement of the continents?

2007-01-15 13:03:15 · 2 answers · asked by meow 2 in Mathematics

1. animals of the class reptilia normally have what kind of skeleton?

2. is it possible for a vertebrate to have teeth, but no jaws? give an example.

3. name the class of vertebrate which has these characteristics: no feathers, no scales, no hair, has legs, bony skeleton, no teeth, has jaws.

4. give 5 vertebrates you see everyday. write the name and class they are found.

2007-01-15 13:00:49 · 4 answers · asked by m0zzetti 1 in Biology

6) y + y/7

10) 7 + y + 3y= 10.2

2007-01-15 12:59:42 · 8 answers · asked by Aaron 3 in Mathematics

The evolution of galaxies?

2007-01-15 12:58:27 · 2 answers · asked by Sunshine 1 in Astronomy & Space

It was 70 degrees here yesterday. In alabama, but still. My meteorology professor said that it had something to do with a strong el nino going on right now. What does that mean?

2007-01-15 12:58:00 · 7 answers · asked by Christines256 3 in Weather

2007-01-15 12:57:06 · 22 answers · asked by Kaci (: 2 in Astronomy & Space

Light incident upon a pane of glass slows down in passing through the glass does it emerge at a slower speed or at its initial speed?
initial speed
slower speed

What evidence can you cite to support the idea that light can travel through a vacuum?

What determines whether or not a material is transparent or opaque?

Which theory of light is the photon more consistent with -- the wave theory or the particle theory?

Short wavelengths of visible light interact more frequently with the atoms in glass than do longer wavelengths. Which do you suppose take the longer time to get through glass -- red light or blue light?

What is the difference between light that is polarized and light that is not?

What percentage of light would be transmitted by two ideal polarizing filters, one atop the other, with their axes aligned?
%
With their axes crossed at right angles?
%

What is the source of electromagnetic waves?

2007-01-15 12:54:55 · 2 answers · asked by Anonymous in Physics

A Bar graph is used to show relative size of the quantities represented. It best shows percentages of a whole?

True or False?

2007-01-15 12:54:52 · 10 answers · asked by Nick s 1 in Mathematics

okay i totaly forgot how to find the inverse of "r"

* | p r s v
------------------
p | s v p r
r | v p r s
s | p r s v
v | r s v p

2007-01-15 12:54:41 · 1 answers · asked by tyder21 4 in Mathematics

2007-01-15 12:53:45 · 10 answers · asked by loverboy197694 1 in Zoology

I heard prevacid but does nexium help

2007-01-15 12:52:28 · 4 answers · asked by Anonymous in Medicine

plez help me to discusse my obseverion,I just did a draft,let me know if am doing it good or if am missing anything eles..u could also add on it...thanks

-Aim:To determine the pH of some household products

Eleven different household substances was given. Universal indicator was used to identify the pH of each household substance.One by one household was poured into test tubes and a small piece of universal indicator was droped into the particular household substance,and then perform it changed.As obsevered closely three substance was very acidic,four was neutral and four was basic.Mostly the lightier liquid changed to acidic such as the bleach,rubbing alcohole ect..and the heavier liquid such as milk (liquid),disinfectant.

2007-01-15 12:51:47 · 3 answers · asked by Anonymous in Chemistry

2007-01-15 12:51:46 · 14 answers · asked by Nick s 1 in Mathematics

2007-01-15 12:51:34 · 5 answers · asked by Anonymous in Botany

2007-01-15 12:51:26 · 4 answers · asked by Anonymous in Mathematics

Can u name some galaxies i need some names of galaxies for my science project...and if u can please give a small discription.

2007-01-15 12:51:02 · 6 answers · asked by Mario diaz 3 in Astronomy & Space

2007-01-15 12:50:48 · 7 answers · asked by Nick s 1 in Mathematics

i am doing a report and i need help!

2007-01-15 12:50:35 · 3 answers · asked by mybirdpipio 1 in Astronomy & Space

i know how to do recipricals but i forgot how to do 0, the choices are -1, 0 , 1, or undefined

2007-01-15 12:49:49 · 6 answers · asked by Lauren 1 in Mathematics

if u know what I'm talking about, then plz pay attention. This is 8th chemistry. so anyway.....this is about writing chemical formulas that contain polyatomic ions.grade chemistry. anyway, this is about
Example:

The chemical formula for a compound composed of calcium and a hydroxide ion is Ca(OH)2.

1. Ca +2 OH -1
2. Ca +2 OH-1
3. Ca(OH)2.

my question is:

the ion for Oxygen is -2
the ion for Hydrogen is -1.

so why doesnt (OH)-2 turn into (OH)-3?

2007-01-15 12:49:46 · 4 answers · asked by funkypolak17 3 in Chemistry

Well you can't use synthetic division b/c its x^2 in the problem here's the problem
(x^3+8x^2-3x+16) divide by (x^2 + 5)

2007-01-15 12:49:09 · 3 answers · asked by blazncaczn 3 in Mathematics

3x - y = 13
2x +y = 12

A) (3, 6)
B) (2, 5)
C) (5, 2)
D) (-5, 22)

2007-01-15 12:47:41 · 9 answers · asked by Nick s 1 in Mathematics

I am stumped on this one...

The complete combustion of 1.00 mol of sucrose (table sugar), C12H22O11, yields 5.65 x 10 3(exp) kJ.
a). Write a balanced thermochemical equation for the combustion of sucrose.

Do I write it as an endothermic reaction because energy is absorbed (bonds are broken) in combustion? Or because it says combustion do I have to include O2 or H20 on the reactant side? Am I even on the right track? We weren't given any examples to work with in our notes and the textbook is of no use with an example. This question does not give you an equation to work with...or to balence or am I not seeing it?

b). Calculate the amount of energy that is released when 5.00 g of sucrose (about one teaspoon) is combusted.

I think for this one I can get my 2nd molar amount and then be able to find AH?

Thanks in advance for your input:))

2007-01-15 12:47:16 · 4 answers · asked by kickaburra 1 in Chemistry