Science & Mathematics - 18 January 2007

2007-01-18 08:49:34 · 7 answers · asked by mikerushe 1 in Other - Science

These are lab exam practice questions, not homework---PLEASE... MY LAB EXAM IS MONDAY!

2007-01-18 08:48:04 · 3 answers · asked by Pretty_baby 1 in Biology

Bio lab exam monday--HELP!

2007-01-18 08:47:03 · 4 answers · asked by Pretty_baby 1 in Biology

Give the usual ax^2 + bx + c form of the quadratic function which has a
= 1, and has two zeros z = -5 and z = 3

2007-01-18 08:46:52 · 2 answers · asked by haileybaby331 1 in Mathematics

Find the x value or values at which the parabola y = x^2 + 5x + 4
crosses the x-axis. If the parabola does not cross the x-axis, write
"It does not cross the x-axis".

2007-01-18 08:45:45 · 4 answers · asked by haileybaby331 1 in Mathematics

2007-01-18 08:45:40 · 3 answers · asked by riena c 1 in Chemistry

2007-01-18 08:45:08 · 2 answers · asked by Math Freak 1990 1 in Mathematics

1) a-3/5=5/6
2) b-11/2+141/4
3) a+7.1+4.7
4) b-5.3+8.1
5) y+11/3+31/18
6) m+7/12+-5/18
7) x+5/8+71/2
8) k-3/8+13/5
9) n+1.4+0.72

2007-01-18 08:44:52 · 3 answers · asked by Anonymous in Mathematics

I heard an interesting theory about having negatively charge Dark matter or something else surround something and thus it can move faster than light. If anyone knows the name of this theory or where i can find more about it.

2007-01-18 08:43:50 · 5 answers · asked by Anonymous in Physics

2007-01-18 08:42:35 · 4 answers · asked by Math Freak 1990 1 in Mathematics

I would like to to know

2007-01-18 08:42:26 · 9 answers · asked by ...confused.. 1 in Zoology

BIO LAB EXAM MONDAY---HELP!

2007-01-18 08:41:38 · 4 answers · asked by Pretty_baby 1 in Biology

i need it fast. please help!!!!

2007-01-18 08:40:38 · 5 answers · asked by b_cutie96 1 in Mathematics

2007-01-18 08:40:32 · 4 answers · asked by Math Freak 1990 1 in Mathematics

just like nasa uses the gravity field of planets to sling shot space probes to other planets in our solar system, than theoretically wouldnt be possible to accelerate a space ship to nearly the speed of light using this same principle and by using the gravity field of a rotating black hole, assuming that the space ship didnt cross the event horison, and assuming that the same ship was built in a manner that could withstand the gravitational forces, inertial forces, and the centrifugal force created by the acceleration.

2007-01-18 08:40:19 · 14 answers · asked by ed35 1 in Astronomy & Space

2007-01-18 08:40:03 · 2 answers · asked by asdfasdffdas 1 in Physics

2007-01-18 08:39:06 · 3 answers · asked by Pierre G 1 in Engineering

2007-01-18 08:38:18 · 4 answers · asked by asdfasdffdas 1 in Physics

2007-01-18 08:37:11 · 2 answers · asked by Jimm Y 1 in Mathematics

Balance each half-reaction for atoms and charge.
a) Na->Na+
b)Sn4+->Sn2+
c)Fe2+->Fe3+
d)Cl2->Cl-

Also I need help with matching 5 reactions....

Fe+CuSo4->FeSO4+Cu
CaO+H2O->Ca(OH)2
NH4NO3->N2O+H2O
Ca(OH)2+2HCl->CaCl2+2H2O
C+O2->CO2

A) single displacement reaction
B) decomposition reaction
C) double displacement reaction
D) synthesis reaction
E) combustion reaction



Lastly balancing this equation.
CO2+H2->CH4+H2O


Please help me. I know it may seem like a lot but I dont understand them. I'm doing this as an online test and I really need help I've done majority of my test questions but these. Please help!

2007-01-18 08:36:00 · 2 answers · asked by Anonymous in Chemistry

What is everyone's take on this article?

http://voanews.com/english/archive/2006-11/2006-11-22-voa80.cfm?CFID=24061736&CFTOKEN=55094380

2007-01-18 08:34:55 · 2 answers · asked by Anonymous in Biology

introduction to algebra

2007-01-18 08:33:02 · 3 answers · asked by needtutor07 1 in Mathematics

Zeno a Pre-Socratic philosopher

for example:
said that an arrow shot at a target never will reach the target because it has to first transverse half the distance to the target

and following his logic you always have half the distance to transverse

since you can draw infinite lines of halves between two points, it is imposible to ever reach the target????

now we all know a arrow can hit a target but how do you rationalize his theory and/or disprove it in a systematic manor

I cant come up with an explination as of yet.. Energy?

2007-01-18 08:32:58 · 3 answers · asked by Anonymous in Mathematics

2007-01-18 08:31:45 · 10 answers · asked by realjo18 2 in Earth Sciences & Geology

A farmer has 500 feet of fencing to use to make a rectangular garden.
One side of the garden will be a barn, which requires no fencing. How
should the pen be built in order to enclose the largest amount of area
possible?
Give your answer by filling in the blanks in the following sentence:
The farmer should build the pen ______ feet away from the barn, and
________ feet wide, for an area of _______ square feet

2007-01-18 08:29:53 · 2 answers · asked by Bill B 1 in Mathematics

2007-01-18 08:29:52 · 8 answers · asked by Anonymous in Astronomy & Space

if you spent two days in space would that be 2 months on earth?

2007-01-18 08:29:35 · 15 answers · asked by carl t 1 in Astronomy & Space

2007-01-18 08:28:46 · 8 answers · asked by coltman 2 in Zoology

2007-01-18 08:28:39 · 2 answers · asked by Anonymous in Medicine

2007-01-18 08:27:45 · 4 answers · asked by tonda_pooh_2004 1 in Mathematics