Science & Mathematics - 30 September 2006

3. What method of water purification would you teach someone who lived in a third world country and had no clean water to drink? Why?

2006-09-30 14:43:49 · 9 answers · asked by Anonymous in Chemistry

What would be the impact if mountain gorillas were to die out?

2006-09-30 14:42:36 · 4 answers · asked by designdavey 1 in Zoology

2006-09-30 14:42:06 · 8 answers · asked by Anonymous in Chemistry

2006-09-30 14:42:01 · 4 answers · asked by curious 2 in Chemistry

2006-09-30 14:40:53 · 3 answers · asked by Anonymous in Biology

2006-09-30 14:40:44 · 5 answers · asked by Anonymous in Chemistry

2006-09-30 14:40:43 · 23 answers · asked by tasneem_alt_qumar 1 in Earth Sciences & Geology

I can't seem to find this, but I beleive that it is the shape of the object and its ability to displace the air or not? My son is 8 and I am not a science mom, pls help.

2006-09-30 14:33:52 · 12 answers · asked by moboz97 2 in Physics

On the Yahoo main page, there is a female astronaut who just returned from space who made that statement. What would cause such a thing to occur?

2006-09-30 14:33:46 · 10 answers · asked by Cinnamon 6 in Astronomy & Space

2006-09-30 14:28:33 · 1 answers · asked by aimee 1 in Physics

2006-09-30 14:28:20 · 5 answers · asked by curious 2 in Chemistry

"Space smells like "a burned almond cookie," wrote Anousheh Ansari, the first female space tourist."

No wonder there havent been any women in space...

2006-09-30 14:27:43 · 13 answers · asked by サンダース 2 in Astronomy & Space

2006-09-30 14:24:09 · 1 answers · asked by peachykeentiger_08 1 in Physics

what really killed the dinosaur?

2006-09-30 14:22:35 · 13 answers · asked by Anonymous in Other - Science

3 blocks are connected by a massless inextensible cord over massless frictionless pulleys. On top of a table (in the middle) is a 51kg block. One mass hangs on the left (102kg) and another hangs on the right (M). The coefficient of static friction between the 51kg block and the table top is 0.62 and the system is in equilibrium (the 51kg block is in the middle of the table top, and the left & right blocks are hanging down across from each other). acceleration of gravity is 9.8 m/s^2.

Find the maximum value of M for which the system remains in equilibrium. answer in units of kg.

2006-09-30 14:22:12 · 2 answers · asked by Dee 4 in Physics

Solve for the Variable.
_______________________
4(m+3) - 2m = 3(m -3)

m=?

2006-09-30 14:15:54 · 17 answers · asked by kevin 2 in Mathematics

2006-09-30 14:14:22 · 16 answers · asked by Anonymous in Astronomy & Space

2006-09-30 14:11:38 · 5 answers · asked by lady_skydancer 1 in Earth Sciences & Geology

2006-09-30 14:07:42 · 1 answers · asked by ferrari_neville 1 in Biology

Does space have a scent? If so, how is the physically possible and I thought you couldn't take off your hat as there is no atmosphere and you would freeze and implode. Please help.

2006-09-30 14:05:44 · 12 answers · asked by robyn 4 in Astronomy & Space

2006-09-30 14:04:56 · 10 answers · asked by sami 1 in Other - Science

There is the well known stereo-type that ecstasy make you "loved up"
now i don't think this is completely true but i don't beleive theres no smoke without fire

2006-09-30 14:03:44 · 8 answers · asked by IMPOSSIBLE 2 in Biology

I bought a bushnell 78 7880 from a second hand store, i only paid 20 dollars for it and its in perfect shape with the exception of missing parts. I have enough to view the moon but I want to see mars and a few other things. does anyone have any idea where I could find a calendar of sorts for optimal viewing in indiana?

2006-09-30 14:01:07 · 5 answers · asked by Anonymous in Astronomy & Space

for senior year physics class we have to make a car solely powered by 4 rubber bands or less...to get an A it needs to travel at LEAST 4 meters....the vechile cannot be more than 30 cm long, the wheels cannot have a diameter larger than 20 cm, the rubber bands must be affixed to the vechile, and we cannot push the car to begin with. I HAVE NO IDEA HOW THE RUBBER BANDS WILL PROPEL THE CAR?! anybody with ANY answer that would even remotely help plzzzz plzzz plzzzz take time to answer this! thank youuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

2006-09-30 14:00:00 · 6 answers · asked by YouKnowMe 1 in Physics

2006-09-30 13:59:17 · 5 answers · asked by sami 1 in Other - Science

a 1600 kg car moves along a horizontal road at a speed vo = 14.6 m/s. the road is wet so the static friction between coefficient between the tires and the road is only 0.296 (static friction coefficient) & the kinetic friction coefficient is even lower (0.2072). acceleration of gravity = 9.8 m/s^2.
WHAT IS THE HIGHEST POSSIBLE DECELERATION OF THE CAR UNDER SUCH CONDITIONS. answer in m/s^2.

2006-09-30 13:57:59 · 3 answers · asked by Anonymous in Physics

2006-09-30 13:51:39 · 9 answers · asked by Anonymous in Physics

2006-09-30 13:51:05 · 6 answers · asked by almostdead 4 in Chemistry

Ok I have the problem
10+5z-10=4z+1
+-4 +-4
10+1z-10=1
+-10 +-10
1z=1
1 1
z=1
Ok now I do the same kind of problem the same way using the additive inverse and look what I get
14+7x=4x-1
+-4x+-4x
14+3x=-1
+-1 +-1
13 3x
Now what did I do wrong with this problem?

2006-09-30 13:51:03 · 7 answers · asked by The Chief 2 in Mathematics

2006-09-30 13:48:23 · 3 answers · asked by michellemulero 1 in Earth Sciences & Geology