Science & Mathematics - 25 September 2007

A soccer ball is kicked with a speed of 10.50 m/s at an angle of 20.0° above the horizontal. If the ball lands at the same level from which it was kicked, how long was it in the air? (Neglect air resistance.)

2007-09-25 12:13:16 · 1 answers · asked by pnknblackity 1 in Physics

2007-09-25 12:06:02 · 5 answers · asked by Anonymous in Mathematics

Why is it so impossible to come up with a way for heavier machinery to be run on a prepetual motor? Like a car for instance...

2007-09-25 12:03:54 · 4 answers · asked by Anonymous in Engineering

My hospital assigns them. What is the general policy in most hospitals?

2007-09-25 12:03:12 · 2 answers · asked by Anonymous in Medicine

2007-09-25 11:59:51 · 2 answers · asked by Shirley P 1 in Engineering

whys is it dat x to the second power is not a linear equation???

2007-09-25 11:58:58 · 18 answers · asked by Anonymous in Mathematics

2007-09-25 11:58:24 · 2 answers · asked by sk k 1 in Engineering

the relationship between them

HELP i need this for a lab due friday!

2007-09-25 11:54:53 · 7 answers · asked by s0ftballchic2oo9 2 in Physics

2007-09-25 11:53:47 · 11 answers · asked by Anonymous in Mathematics

mind over matter?
does it work and how to do it

2007-09-25 11:48:02 · 12 answers · asked by Anonymous in Parapsychology

i i am looking for nonexamples of organell?

2007-09-25 11:47:59 · 5 answers · asked by Beatriz 1 in Biology

Which of the following may be an amphiarthrotic fibrous joint?

A.Syndesmosis
B.Suture
C.Sternocostal
D.Intervertebral

and what is a amphiarthrotic joint?

2007-09-25 11:47:37 · 1 answers · asked by Holly B 2 in Botany

2007-09-25 11:46:09 · 1 answers · asked by ? 1 in Earth Sciences & Geology

it's a crossword
i can't get these ones
help is greatly appreciated

1. In biology, a vessel that carries blood
2. a fragment of a cell that is needed to carry blood clots
3.in an experiment a group that serves as a standard of comparison with another group that is identical except for one factor
4.an explanation for some phenomenon that is based on observation, experimentation, and reasoning

thank you :]

2007-09-25 11:45:16 · 6 answers · asked by Anonymous in Biology

f(x)=(x-3)(x+2)^3 what is the:
domain
range
derivative(s)
relative max,if any
relative mim, if any
inflection points, if any
concave up
concave down

please help

2007-09-25 11:44:17 · 3 answers · asked by fvsdf s 2 in Mathematics

starting from rest, a 5.00-kg block slides 2.50 m down a rough 30.0 degree incline. The cofficient of kinetic friction between block and incline in mk=0.436. what would the work done by the force of gravity be, the work done by the friction force between the block and incline be. and the work done by the normal force.

2007-09-25 11:42:57 · 1 answers · asked by markeesha h 1 in Physics

e^x - e^(-x) = 1

uh oh

2007-09-25 11:40:53 · 8 answers · asked by salmonella_jr 3 in Mathematics

1. What is the angular length of Big Dipper?
2. What is the angular height of Big Dipper above horizon?
3. What is the angular separation between Big Dipper's front stars and the North Star?
4. What is the angular height of Polaris above horizon?

2007-09-25 11:40:48 · 2 answers · asked by Anonymous in Astronomy & Space

2007-09-25 11:40:19 · 6 answers · asked by kotanation 1 in Weather

i had look everywhere and i dont find the characteristic of organelle..

2007-09-25 11:38:25 · 4 answers · asked by Beatriz 1 in Biology

WTF!

2007-09-25 11:37:38 · 8 answers · asked by xkatstroficx 2 in Astronomy & Space

Ok...theres a farmer. when u ask hom how many chickens and rabbits there are he wont tell u. he just says there are 18 heads and 58 animal feet. how many chickens and how many rabbits are in the yard.

my answer: 8 rabbits and 11 chickens
is that right??
it came out to 58.
plz help and if i did it wrong explain how i should do it plz!!
thank you!!

2007-09-25 11:36:56 · 6 answers · asked by ♥ (: 4 in Mathematics

Can someone help me figure these 2 out.
1)x^7+16x^6+113x^5+450x^4+1080x^3+1552x^2+1232x+416

2)x^6-x^5-11x^4+13x^3+26x^2-20x-24

I know how to set these up but if you can tell me the factored answer and what you put in the upper left hand corner box i think i will have it. to figure out what goes in the upper left hand corner box you have to find all the factors of either -24 or 416. i have tried and tried and i just cant get it. PLEASE HELP ME!

2007-09-25 11:34:41 · 2 answers · asked by Anonymous in Mathematics

Has mankind developed "time" as a measurement tool? Does time exist because "we" say it does? By rotation of the Earth time is calculated, because the Earth rotates does this establish time as absolute and only on Earth?

2007-09-25 11:32:58 · 3 answers · asked by edubya 5 in Physics

lim x-27/x^(1/3)-3
x->27


and

lim x^(1/3)-1/x^(1/4)-1
x->1

i tried these and everytime i do it they come out to equal 0/0
which is wrong because our teacher told us it wasnt 0

2007-09-25 11:31:46 · 2 answers · asked by the_hockey_guy1990 1 in Mathematics

I just took a test with this question on it and im wondering if i got it right........please answer if u can.........thanks!!!!!!

2007-09-25 11:31:46 · 2 answers · asked by Anonymous in Mathematics

Explain how the mechanical advantage of a wheel and axle change as the size of the wheel increases

Thanks!

2007-09-25 11:31:25 · 1 answers · asked by Justin 3 in Engineering

2007-09-25 11:30:39 · 1 answers · asked by Tommy 2 in Mathematics

y= (x^3)/(6) + (1/(2x))

{1/2
Calculus

2007-09-25 11:28:18 · 3 answers · asked by Anonymous in Mathematics

Thrown 15.8m above the ground. With what speed does the water balloon hit the ground? How long does it take?

2007-09-25 11:28:01 · 1 answers · asked by Andy D 3 in Physics