Science & Mathematics - 19 October 2006

6x to the second power -5xy-4y to the second power. if x is 2 and y is negative 2 .

2006-10-19 06:13:16 · 9 answers · asked by baby girl 123 1 in Mathematics

2006-10-19 06:13:07 · 8 answers · asked by hunnk33 1 in Astronomy & Space

is fired into a 122 g block of wood which is at rest on a horizontal surface and stays in the wood. After the impact, the block slides 14 m and then comes to rest. If the coefficient of friction between the surface and the block is 0.5, what is the speed of the bullet before impact. Acceleration of gravity is 9.8 m/s^2, answer in units of m/s.

2006-10-19 06:11:49 · 1 answers · asked by Mariska 2 in Physics

Here me out. I am a senior biochemistry major and fully understand, believe, and support the workings and mechanisms of evolution. I'm also totally against creation being taught in schools. However, I would not be so attuned to this slightly advanced science if it wasn't for my fluency in science. I am wondering if evolution is something that should be taught later in high school (I was first taught about it as a sophomore) like as part of a senior year science.

The only reason why I ask this is because I've looked at so many anti-evolution questions on here and it's all from people who are misinterpreting the science. Most of the time, it's a complete misinterpretation. Apparently the simple idea that we have a common ancestor isn't cutting it for a lot of people. Maybe if they were a little more understanding of the scientific reasons why, then there wouldn't be such an issue. Or maybe it's impossible to take the 7 days out of the bible without people thinking irrationally.

2006-10-19 06:11:44 · 14 answers · asked by Shortstuff71 3 in Other - Science

2006-10-19 06:10:31 · 4 answers · asked by hunnk33 1 in Astronomy & Space

2006-10-19 06:07:29 · 11 answers · asked by Anonymous in Medicine

I bet I would be a lot fitter to survive and pass on my genes if I did. So I guess evolution is bunk, huh?

2006-10-19 06:06:56 · 21 answers · asked by monkey 5 in Other - Science

a stone hangs by a fine thread from the ceiling and a section of the same thread dangles from the bottom of the stone. If a person gives a sharp pull on the dangling thread, where is the thread likely to break: below the stone or above it? What if the person gives a slow and steady pull, please exapain this

2006-10-19 06:05:04 · 3 answers · asked by Anonymous in Physics

2006-10-19 06:04:45 · 3 answers · asked by matt_sorrentino 1 in Other - Science

if a pump takes 18hrs to drain a pool, and another pump takes 12 hrs to drain a pool, how long will it take for both pumps to drain the pool

2006-10-19 06:03:04 · 10 answers · asked by Leon 2 in Mathematics

Physical existence has levels of tolerance, built in. We on the whole, above and beyond our various categories, reach, occasionally cross, and test the remaining endurance of this place hanging in space, once called eden by some. While most keep repeating "Oh well, what can you do?, "my hands are tied.", "It's in his hands." or a favorite, "our system may not be perfect but it is the best." Expressed by leader, lawyer, judge, lobbyist, holy vanguard, the avante garde, patent, publishing and copyright holder, executive, manager, philanthropist, share holder, civil servant, union member, enforcement agent, and those of cause, wealth and celebrity. As well as those naive, devout and patriotic who dutifully and most often blindly potect exclusivity's of those whom rarely seem to have to answer. Think again.
Civilization, is not civil, humanity is not humane and intervention soon attends. Avail mutual inter-relationship, within and of every category, depth and demension or fail to exist.

2006-10-19 06:02:50 · 2 answers · asked by richardnattress 2 in Biology

and please tell me the state

2006-10-19 06:02:37 · 21 answers · asked by Anonymous in Weather

2006-10-19 06:00:10 · 1 answers · asked by matt_sorrentino 1 in Chemistry

Or are they above the whole "sex" thing?

2006-10-19 05:59:20 · 2 answers · asked by Anonymous in Other - Science

A.
2000 75t = 1600-75t

B.
550 + 75t = 2000-75t

C.
550 + 75t = 1600-75t

D.
none of these

2006-10-19 05:59:20 · 3 answers · asked by Anonymous in Mathematics

2006-10-19 05:57:40 · 11 answers · asked by Allen L 1 in Zoology

a triangle has a perimeter of 14cm and an area of 12cm (square). find ther perimeter and the area of a similiar triangle with double the dimensions of the given triangle.

2006-10-19 05:55:50 · 3 answers · asked by woodaka2004 1 in Mathematics

Say 300-500 years from now, if we dont extinct ourselves by then, could we have the knowledge to time travel? Look at how far we've advanced in technology in the last 50 years and the rate that it is increasing...
If so, then do we have people walking around from the future right now? They'd probably be smart enough to know not to change anything...
What about aliens? Could they be our future smarter selves? Maybe our earth becomes inhabitable so the elite humans get to inhabit this new planet with new laws of gravity so their body has less mass, which is why aliens are described as skinny. The reason we cant find them is because in our time, they dont exist, but maybe in 500 years we've colonized the moon or something and learn new laws of physics which dont exist on earth which is why we dont have that technology yet.
Am I crazy?

2006-10-19 05:54:40 · 17 answers · asked by Candy C 2 in Astronomy & Space

what were two differences between their telescopes? All I know so far is that Galileos turned things upside down, and was therefore used for astronomical researching. What was Newtons used for and what were the TWO differences between their telescopes?

2006-10-19 05:52:19 · 2 answers · asked by Anonymous in Astronomy & Space

A. Fruits and vegatbles
B. Toast and cereal
C. Beans and rice
D. Rice and pasta

2006-10-19 05:49:25 · 6 answers · asked by cetinnovations 1 in Chemistry

d/dx (ln[x + y]) where x and y are both variables

2006-10-19 05:47:20 · 5 answers · asked by benabean87 2 in Mathematics

2006-10-19 05:44:52 · 13 answers · asked by Takeem M 1 in Chemistry

can anyone tell me TWO differences between Galileo's astronomical telescope and Newton's later and better telescope?

2006-10-19 05:42:46 · 3 answers · asked by Anonymous in Engineering

2006-10-19 05:38:41 · 7 answers · asked by csyshaw 1 in Zoology

2006-10-19 05:37:20 · 4 answers · asked by ck4pkn 1 in Geography

Hi,
I can't find a decent, easy-to-read (and understand) website which will thoroughly explain most of the advantages and disadvantages of mobile phone masts. So I decided that maybe some of you clever people could help me! You can either:
a) Give me a good link to a page about the advantages and dasadvantages of mobile phone masts;

OR:-

b) You could type them in your answer to me if you know a few good ones already.

Thanks v. v. v. much in advance! :D

2006-10-19 05:35:31 · 3 answers · asked by ..Hannah..UK Never too early to celebrate Xmas 6 in Physics

i dont know

2006-10-19 05:31:16 · 8 answers · asked by pafkiet2005 1 in Mathematics

a) water: If it's pure, wouldn't it be a compound? If it's not pure, then it'd be a mixture, right? I'm not sure what I'd answer for this.
b) sea water- mixture b/c u can seperate physical properties?
c) Wine- Mixture for the same reason as sea water
d) Diamond-mixture?
e) Milk- mixture?
f) gasoline- err... I want to say compound since I remember some formula for it, but it seems like a mixture.
g) Pebble-mixture?

Btw, what elements make up milk, wine, and gas?
I'm really not sure how I can tell if u can seperate something physically.

2006-10-19 05:28:08 · 5 answers · asked by bebeeangeldust 4 in Chemistry

If so,maybe you'll like my poem...

-Autumn's Glory-

The air is crisp and leaf scented,
Squirrels playfully dart about,
My little one leaps in the pile,
I'll rake again,no doubt.

I pour hot apple cider,
With cinnamon,to the brim,
I look out the window...could it be?
A flake of snow upon the limb.

The seasons come quickly,
And they intermingle,
Soon we'll be shoveling,
And we'll hear Santa's jingle.

You can have the Summer,
I'll enjoy what comes now,
So cozy and cool,
Today as I look to nature...
I just say 'Wow'!

2006-10-19 05:26:01 · 8 answers · asked by MaryBeth 7 in Weather

such as greek, superscript, integral, sqrt

2006-10-19 05:23:16 · 8 answers · asked by p_ne_np 3 in Mathematics