Science & Mathematics - 14 November 2007

5) Potassium carbonate + bromine -----> potassium bromide +potassium bromate + carbon dioxide

2007-11-14 15:57:09 · 3 answers · asked by Caramel 2 in Chemistry

i wanna know the factored and vertex form but the way to get these forms would be more useful then the answer to what the factored form is

2007-11-14 15:55:20 · 7 answers · asked by chuck g 1 in Mathematics

Some people here have stated that earth is just a speck of dust revolving around a minor star in the backwoods of our galaxy, which itself is a relatively small galaxy in the backwoods of the universe. But, maybe you have never quite put it in perspective, so I would like to show you something.
Tell me what you think?
http://www.youtube.com/watch?v=Tfs1t-2rrOM

2007-11-14 15:51:33 · 21 answers · asked by Anonymous in Astronomy & Space

2007-11-14 15:49:49 · 5 answers · asked by brooklyn15290 1 in Chemistry

Cosmic illusion
While it might look like Mars is orbiting in reverse, it's all just an illusion. » Users explain

How it affects your horoscope Find Mars' closest orbit to Earth
the case being is god ultimately has control over all and all your research wont mean a thing when he starts changing it to show all he's in control and all your crayon and rulers glue and computers wont be able to fix it. please believe in jesus god bless

2007-11-14 15:48:46 · 2 answers · asked by christian soliders general 1 in Astronomy & Space

what is the derviative of ln[2x]
is it chain rule? 1/x(2x)2

2007-11-14 15:45:44 · 3 answers · asked by ineedhelpbadly 2 in Mathematics

(root 2minusroot 3)divided by 2

((2-(3)^(1/2))^(1/2))/2

2007-11-14 15:44:29 · 5 answers · asked by arturo 3 in Mathematics

1) -2( 3y-7)=56
2) 6(1-4w)= -18
3) 4(2+5)-8=36
4) 2(5-3v)+9v=28
5) 7-3(5t-10)=67
6)-9(6+u)-2u=-10
7) 13x +7 (-3x-1)--63
8)15-(4m-5)=32
9)-2(-7k+4)+9=-13
10)-5y-5(-6-2y)=0
11)3(1+4n)-2(5n-3)=25
12)-6(x-2)+4(3-6x)=-36
13)5(4+2x)-(8x -12)=68
14)-3(-4 -6y)+7(-y+5)=-8
15)8(2w-6)+4(-1-5w)=0


it is 2-step equations, distributive properties, and integers
I will do ANYTHING in the world if anyone did this for me. <3333

2007-11-14 15:44:12 · 8 answers · asked by Anonymous in Mathematics

Can someone show me how to solve this? I am just trying to check an answer to see if I have the right answer or where I might of made mistakes.

http://img.photobucket.com/albums/v60/simple_3/math2-1.jpg

2007-11-14 15:41:11 · 2 answers · asked by . 2 in Mathematics

What is the speed of an electromagnetic wave having a frequency of 1.33 x (10 to the 17th power) Hz and a wavelength of 2.25 nm? Isn't it supposed to be 3 x (10 to the 8th power)? Please help and thanks :)

2007-11-14 15:40:32 · 4 answers · asked by R3B3LL10N 1 in Chemistry

why can't we feel earth's movement although we are aware that it moves in very high speed?

(we should feel dizzy most of the times like the feeling while we are inside the speeding car or any vehicle)

2007-11-14 15:38:27 · 11 answers · asked by colin 2 in Astronomy & Space

2007-11-14 15:35:40 · 6 answers · asked by bob joe bill 2 in Mathematics

2007-11-14 15:33:28 · 1 answers · asked by Lutfor 3 in Weather

I saw a derivation here last week of f '(1/x) from f.p., but now I have lost it

2007-11-14 15:27:56 · 1 answers · asked by c0cky 5 in Mathematics

2007-11-14 15:25:38 · 3 answers · asked by van l 1 in Biology

At what point does the curve x=1-2(cos^2)t, y=(tant)(1-2(cos^2)t) cross itself? Find the equations of both tangents at that point.

2007-11-14 15:21:59 · 3 answers · asked by Anonymous in Mathematics

I believe it starts with the letter "Q".

And an example of what I am writing about is, when a ice cube is solid, but it is unstable because it can melt. And the flip side is, when the ice cube melts, it is no longer solid, but it is now stable.

Another example, is a clean bedroom, solid when clean, but unstable, because it can get messy. When messy, not solid, but stable.

2007-11-14 15:21:59 · 3 answers · asked by prc85040 3 in Physics

Convert √2e^(-π/4)i to rectangular

√2(cos(-π/4)+i sin(-π/4))

=√2((1/√2)+(-1/√2)i)

I understand that cos is not negative because -cos=cos, I don't understand why the cos and sin equations are converted to (1/√2) when sin and cos of pi/4 is (√2/2)???

thanks a lot for your help.

2007-11-14 15:19:27 · 1 answers · asked by Nate 6 in Mathematics

Where and how specifcally, does it happen?

2007-11-14 15:15:52 · 2 answers · asked by ASL 5 in Biology

2007-11-14 15:12:17 · 4 answers · asked by creative_criminal 2 in Other - Science

Question : Sketch the region R and evaluate the double integral: (Area Integral) f(x,y) dA = (Area Integral) (x^2)*(y) dydx

Where (Area Integral) stands for the double integral and the bounds of the second written out integral is 0 (lower) to 1 (upper) for x, and (x)^(1/2) (lower) to 1 (upper) for y.

My difficulty is with trying to sketch this graph, how would I go about doing this?

2007-11-14 15:11:59 · 2 answers · asked by offycakes 1 in Mathematics

Just wondering where I could find out information on this subject.I mean they have solar panels that follow the sun why not a magnifing glass type structure that could heat a boiler during the day,then release the heat at night.at least as an alternative heat source.

2007-11-14 15:11:51 · 3 answers · asked by bjec22 2 in Engineering

2007-11-14 15:09:17 · 2 answers · asked by Anonymous in Biology

I am not sure what to do for most of them so could you help me?

1.Metals usually react to form cations [T/F]
2.Weak acids and bases are used ti wash clothes[T/F]
3.Acid precipitation results mainly from combustion reactions[T/F]
4.arrangement of elements with similar chemical properties in the periodic table. _____
5.Type of ion that is usaully formed by metal atoms.________
6.group of atoms with a net charge; the atoms are joined by covalent bonds.________
7.type of bond formed when a pair of electrons is shared
8.Phosphorus atom has___valence electrons
9.An example of an anion with the same number of electrons as Ne is________.

Help is appreciated ^-^

2007-11-14 15:09:17 · 3 answers · asked by Good Evening, Miss 3 in Chemistry

Imagine someone has a collection of two different sized coins (for instance nickels and quaters, or 10 and 5 pence pieces) all kept together in the same bag. They spill the contents of the bag onto a table and observe the layout of the coins before them. They then try and analyse the layout of the coins to look for 'groups' of coins - i.e. those touching each other, in clusters, and if certain sized coins were to appear within these groups.

How could they analyse the spread of coins to determine if the smaller of the two coins is more likely to group than the larger, and vice versa. If the smaller coins were found to be more prominent within the 'groups' as opposed to individually within the layout, how could this be analysed?

What statistical methods could be deployed to show that the smaller coins are more likely to be found grouped than individually. Lets say there is no element of chance involved and that smaller coins are more likely to group. (Hope this makes sense)

2007-11-14 15:07:00 · 6 answers · asked by lazytramp789 6 in Mathematics

2007-11-14 15:06:04 · 6 answers · asked by tigerfan_75 1 in Engineering

ok.... help please!! thanks =)

2007-11-14 15:06:00 · 1 answers · asked by Anonymous in Engineering

I am just curious about caffine. Where does it come from? A plant, a bean, chemicals or what? Is it man made, or just made by natural stuff? How is caffine made, and what is it made out of?

2007-11-14 15:04:22 · 9 answers · asked by .:.Betsy.:. 2 in Other - Science

2007-11-14 15:02:28 · 1 answers · asked by ch@rlene 3 in Biology

I have a question for my AP lab that my friend and I are having trouble answering. Any help will be greatly appreciated. Thanks.

What organelles (or structures) do onion epidermal cells possess that are NOT found in human cheek epithelial cells?

I'm pretty sure cell wall is right but I'm not sure about chloroplasts. This is because I don't know what part of the plant they are talking about when it says "onion epidermal cells". I know epidermal means "skin", but does it mean the skin of the onion or the skin of the leaf? And there could be other organelles too. I'm so confused. =(

2007-11-14 15:01:25 · 2 answers · asked by ashley2325 2 in Biology