Science & Mathematics - 20 September 2007

A ball is thrown up in the air with a velocity of 35m/s. (Assume the ball starts with an initial height of 2m)
At what time is it at an altitude of 1.0 meters above the ground? (Use the quadratic formula)

2007-09-20 16:46:18 · 2 answers · asked by sam 2 in Physics

i need help on my home work

2007-09-20 16:43:22 · 21 answers · asked by Matt 1 in Mathematics

i'm trying to find the scientific name of a certain termite. all i know is the scientific name starts with a Z. i've been looking for almost an hour, if you could help, it would be GREAT!

2007-09-20 16:42:41 · 5 answers · asked by cherie 3 in Biology

a projectile is fired with an initial speed 75.2 m/s at an angle of 34.5 above the horizontal on a long flat firing range. a)determine the maxim height reached by the projectile
b) the total time in the air (forget this one)
c) the total horizontal distance covered (that is, the range)
d) the veolcity of the projectile 1.5s after firing


please helpp step by step procedure on doing this =(

2007-09-20 16:36:48 · 5 answers · asked by LilChineseFob 1 in Physics

that i completely forget how to do..

it is:

2x+3=2x+8

just.. yeah.

that and this one:

the product of 7 and the quantity of a number plus 2 is 14. Find the number.

2007-09-20 16:35:59 · 15 answers · asked by erica B 1 in Mathematics

ha ha i don't know why i'm always so bad at these. anyway, umm here's the problem:

(3*5^X-5) / (27*5^x-3)

how do i solve this for x? i know there's another way...but usually i would just set 27 as a power of 3 and then easily subtract the exponents using the quotient rule. however, this would cancel out the Xs, thus, i am a little confused on how to go about this. i know the right answer is 1/225 thanks to my teacher's key, but HOW? (this is on a quiz review)

2007-09-20 16:34:13 · 2 answers · asked by helloosunshine 3 in Mathematics

2007-09-20 16:32:23 · 13 answers · asked by LADY V, 1 in Mathematics

the square root of 3? Show work please.

2007-09-20 16:31:50 · 1 answers · asked by ... 2 in Mathematics

SURFACE WATER MOVED BY WINDS RESULTS IN OCEAN CURRENTS.?
TRUE OR FALSE?

2007-09-20 16:29:42 · 10 answers · asked by Meghan R 2 in Weather

lipid synthesis
protein synthesis
barbiturate detoxification
amphetamine detoxification

2007-09-20 16:29:23 · 3 answers · asked by Anonymous in Biology

2007-09-20 16:29:15 · 1 answers · asked by alawrence108 1 in Mathematics

a typical jersey cow weighs 150 lb at 3 mos. and 540 at 15 mos. what would be a point slope equation for this, giving the weight of the cow as the function?

2007-09-20 16:28:47 · 2 answers · asked by karlieT 1 in Mathematics

attached to the plasma membrane
suspended in the cytosol
attached to the endoplasmic reticulum
attached to the Golgi apparatus

2007-09-20 16:25:07 · 1 answers · asked by Anonymous in Biology

If i had hydrogen and oxygen would i be able to make water? Like actually make it?

2007-09-20 16:24:38 · 2 answers · asked by =) 4 in Other - Science

need science fair project great award winning complicated detailed I've got about 4 months chemistry energy not involving living things

2007-09-20 16:23:40 · 5 answers · asked by Cinthia W 1 in Chemistry

I need to understand why it is so HOT in Tucson (2200 Feet Elevation). It's near the end of September and it's still 85 degrees at 8:30 at night. I understand the concept of solar loading, so how does the heat remain long after sunset. I don't think we have any more or less heat retaining geography than anywhere else. For instance, I've lived in Albuquerque (5000 Feet Elevation) and while hot in the sun, it is "cool" in the shade. Not so in Tucson. People say it's a "dry heat", but since its officially 36% Rh; I don't understand that claim either.

2007-09-20 16:22:49 · 4 answers · asked by Radman 3 in Weather

iduno how to use a graphing calc nd dunt have one ><

Use a graphing calculator to tell which of these equations has No solution and which has a solution of All Real Numbers:

a) 1/2x - 5 = 2x -20 over 4

b) 3/2x - 2 = 3 [ x/2 - x ]

also....

this is not graphing
but i dunt get how to do it ><
solve plzz 2/3x - 5 = 1/4 ( x - 5 )

2007-09-20 16:22:07 · 6 answers · asked by Anonymous in Mathematics

I know when you want to remove division or multiplication in algebra, every term on the left and right side must be either multiplied or divided. For example: 2x + 12 = 20. Normally, people simplify by subtracting 12 from each side, but even if you don't, it still works by doing x + 12/2 = 20/2, which comes out to x + 6 = 10, take away 6 from both sides, and you get 4. However, this doesn't seem to work with squares or square-roots. For example: x^2 + 4 = 20. x + sqrt(4) = sqrt(20) doesn't work. If you simplify beforehand and do x^2 = 16, you get the right answer (4). Why doesn't my first example work? Is there some sort of special rule?

2007-09-20 16:18:41 · 8 answers · asked by Anonymous in Mathematics

why does the mass of bubble gum decrease after chewing it for a long time? please help me because i don't know.

2007-09-20 16:16:56 · 6 answers · asked by Sarah S 3 in Other - Science

If I have a point and its image, is that enough to determine whether the image was found using a translation, reflection, rotation, or glide reflection?”

2007-09-20 16:12:24 · 1 answers · asked by Anonymous in Mathematics

2007-09-20 16:10:25 · 8 answers · asked by texan3715 1 in Mathematics

-35x – 28 + 35x -5 = x – 7
-35x + 35x – 28 – 5 = x – 7
–7(5x + 4) + 5(7x – 1) = x – 7
-35x + 35x -33 + 7 = x – 7 + 7
-33 + 7 = x
-36 = x

2007-09-20 16:08:19 · 12 answers · asked by Anonymous in Mathematics

Homework.

2007-09-20 16:08:17 · 6 answers · asked by Anonymous in Biology

2007-09-20 16:05:17 · 6 answers · asked by Anonymous in Geography

2007-09-20 16:01:43 · 2 answers · asked by Rubin M 1 in Biology

How toxic is diethylene glycol? Is it only harmful when swallowed? Is it safe for such
chemicals to come into contact with cuts or burns on skin?

2007-09-20 16:00:24 · 4 answers · asked by Therese R 2 in Chemistry

i need some help..

3x=5y=7

2x=-3y+10

1+7y=5x-2

and can you tell me how to do it?

2007-09-20 15:58:25 · 5 answers · asked by slugbug! 1 in Mathematics

2007-09-20 15:57:55 · 8 answers · asked by LADY V, 1 in Mathematics

It's been like that all $#@% day!!!

2007-09-20 15:57:33 · 1 answers · asked by Anonymous in Physics

There are 132 more silver dollars than 50-cent pieces . THE ratio of silver dollers to 50-cent pieces is 5:2. How many of each type of coin are there?

2007-09-20 15:56:50 · 1 answers · asked by J.D 1 in Mathematics