Science & Mathematics - 20 December 2006

2006-12-20 11:34:25 · 7 answers · asked by euzzle007 1 in Engineering

2006-12-20 11:32:13 · 3 answers · asked by Anonymous in Earth Sciences & Geology

Such as vacuole and ribosome and Nucleus?

2006-12-20 11:32:05 · 5 answers · asked by Anonymous in Biology

(0,-3) with a slope of 2/5. find the equation of a line. how on earth do u do this?? my choices are..please exsplain this to me
a] -5x+3y=23
b]-3x+2y=17
c]2x-5y=15
d]-2x+5y=15

2006-12-20 11:28:48 · 10 answers · asked by cbabe278 2 in Mathematics

2006-12-20 11:27:41 · 12 answers · asked by faith w 1 in Mathematics

for an electrical enginer who wants to master digital design. I want an FPGA board where I can find enough information to master FPGA and VHDL...any ideas.?

2006-12-20 11:26:50 · 4 answers · asked by Anonymous in Engineering

2006-12-20 11:26:45 · 5 answers · asked by Anonymous in Mathematics

2006-12-20 11:23:58 · 2 answers · asked by Francis H 1 in Mathematics

I see they went 3a * 3a = 9a^2, but where does the 12ab come from? Can someone pls spell this out for me? =)


answer is 9a^2 - 12ab + 4b^2

2006-12-20 11:22:35 · 10 answers · asked by grem 3 in Mathematics

I mean clearer than glass or plexi-glass, that light passes through almost without being bent.

2006-12-20 11:22:13 · 4 answers · asked by henry j 1 in Physics

2006-12-20 11:21:59 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2006-12-20 11:18:07 · 13 answers · asked by Friels Sr. T 1 in Astronomy & Space

I want a square cut solitaire diamond ring for xmas and my bf is getting one for me but within a budget of around $300. I was wondering why all the round shaped ones cost so much less than the square ones. Also any tips in choosing the right ring? I don't like gold but silver or white gold is fine. And his budget of around $300 is only because this is more of a promise ring and we've only been together for a little over a year. Thanks for all the input.

2006-12-20 11:17:54 · 6 answers · asked by chocolate_cat 3 in Earth Sciences & Geology

2006-12-20 11:17:21 · 2 answers · asked by cashkill 4 in Medicine

does any one know what the atomic symbol for iron is?

2006-12-20 11:16:57 · 3 answers · asked by dane-y 1 in Chemistry

2006-12-20 11:14:30 · 4 answers · asked by Anonymous in Biology

what is the product of Anhydrous Copper(II)Sulfate + Water

2006-12-20 11:11:42 · 2 answers · asked by Anonymous in Chemistry

This is not a homework question - this is just out of curiousity.

Why do the eight planets in our solar system orbit the sun in the same plane? (The newly demoted Pluto is also "close", orbiting slightly off of this plane.)

Is there a meaningful relationship between the sun's equator and the plane of the orbiting planets?

Why are the spins of these planets also the same (they all spin in the same direction as earth and not the opposite)?

Do other solar systems in the universe exhibit the same phenomenon described above?

2006-12-20 11:10:51 · 5 answers · asked by sep_n 3 in Astronomy & Space

I need to calculate the theretical mass of solid product that should be produced:
NaHCO3+NaOH+CO2
How do i do this? Step by step plz.

2006-12-20 11:08:44 · 6 answers · asked by Anonymous in Chemistry

Sin, Cos, Tan...

2006-12-20 11:08:06 · 6 answers · asked by Anonymous in Mathematics

I have two questions:

1) Is the green pigment in leaves a single compound or several compounds?
I know its several compounds but i dont know why so can you please explain.

2) Why do leaves go through various color changes as they die? explain in as much detail as you can- really confused about this :(

2006-12-20 11:06:21 · 1 answers · asked by holaaloha12345 4 in Biology

It says:
Find the center, foci, length of major axis and length of minor axis.
x²+9y²-4x+54y+49=0

How do put it in the ellipse form? Do I have to complete the square?

2006-12-20 11:05:38 · 6 answers · asked by Anonymous in Mathematics

a. potassium hydride f. lead(II) nitrate
b. mercury(II) cyanide g. copper(II) perchlorate
c. zinc tartrate h. sodium tetraborate
d. cadmium silicate
e. ammonium dichromate

2006-12-20 11:05:19 · 6 answers · asked by San Fran Kid 2 in Chemistry

A chord is a line segment with both endpoints on the circle, which does not pass through the center of the circle and defines the arc(generally the shorter circumfrence of a divided circle).
And I still have a 'chord' 1470mm & at 735mm perpendicular 250mm to furthest edge of circle/arc - quick I gotta get back to tescos

2006-12-20 11:04:37 · 5 answers · asked by Anonymous in Mathematics

angle of reflection = angle of incidence + angle of refraction.

is this always true or only for certain situations?

2006-12-20 11:03:43 · 2 answers · asked by 8 3 in Physics

A = 9(46*9)/43(8*23)

2006-12-20 11:03:35 · 19 answers · asked by funchop 3 in Mathematics

If log y = 1.5x-2, show that y = 0.01(31.6)^x

The farthest I got was that 10^(1.5x-2)=y
but then I am stuck

2006-12-20 11:03:11 · 5 answers · asked by alikat4392 4 in Mathematics

Its 7:02 pm in PA

2006-12-20 11:01:30 · 14 answers · asked by Anonymous in Geography

2006-12-20 11:00:54 · 7 answers · asked by rock n' roll 1 in Chemistry

I have a friend that married a girl 5 years ago because she said she was preggers with his baby..He and his wife both have brown eyes & hair..The baby (now 5) has very blond hair and bright blue eyes. Could this baby be his baby?

2006-12-20 11:00:21 · 16 answers · asked by lightskin10 1 in Biology