Science & Mathematics - 23 September 2007

Take the derivative with respect to x: r(x) = sin (x)

take the derivative wth respect to x and smplify completely: fx)=x^1/3(4x^3-sqrt(2x))
please explain with positve exponents.

2007-09-23 16:30:05 · 2 answers · asked by fvsdf s 2 in Mathematics

2007-09-23 16:29:32 · 5 answers · asked by flutterby1920 1 in Geography

2007-09-23 16:28:04 · 5 answers · asked by Song Cry 2 in Chemistry

If peridotite (mass) remains at the same temperature but begins to melt as it if uplifted closer to Earth's surface....

what would this process be called?
is it decompression melting?

can anyone name/describe a process that could uplift mantle peridotite to start it melting in this way,?
any specific plate tectonic setting where this may be happening now?

Thanks, i appreciate it.

2007-09-23 16:27:44 · 2 answers · asked by jen 1 in Earth Sciences & Geology

2007-09-23 16:27:03 · 2 answers · asked by Robert 1 in Mathematics

yeah just wondering..

2007-09-23 16:25:30 · 3 answers · asked by Anonymous in Mathematics

Agjactly what time is the 20 20 final cricket match tomorrow between Pakistan and India in South africa? and what time that would be agjactly here in Canada?

2007-09-23 16:22:46 · 3 answers · asked by Ovi R 1 in Geography

2007-09-23 16:18:04 · 2 answers · asked by Praire Crone 7 in Earth Sciences & Geology

The atoms of a solid possess a certain minimum 0 point energy even at 0K, while no such restrictions hold for the molecules of an ideal gas. How does the Uncertainty Principle explain these statements?

2007-09-23 16:15:36 · 1 answers · asked by Mike M 2 in Physics

When baseball outfielders throw the ball, they usually allow it to take one bounce on the theory that the ball arrives sooner this way. Suppose that after the bounce the ball rebounds at the same angle as it had when released but loses half its speed.

a. Assuming the ball is always thrown with the same initial speed, at what angle should the ball be thrown in order to go the same distance D with one bounce as one thrown upward at = 46.0° with no bounce?

b. Determine the ratio of the times for the one-bounce and no-bounce throws.
t1b / t0b =

2007-09-23 16:13:09 · 2 answers · asked by Anonymous in Physics

2007-09-23 16:10:00 · 3 answers · asked by abcdefghijk 4 in Mathematics

2007-09-23 16:09:08 · 3 answers · asked by Anonymous in Engineering

The square measures 90 feet on a side.

2007-09-23 16:08:49 · 2 answers · asked by Jen 4 in Mathematics

♥

2007-09-23 16:06:43 · 10 answers · asked by Anonymous in Zoology

I understand that these labels mean there's some kind of difference in the detergent formulation. But why is is that you don't see these labels in the US?

2007-09-23 16:06:36 · 1 answers · asked by Dick Whitman 4 in Biology

suppose vector u dot v= w dot v for all v. Is it necessarily true that u=w? justify ur answer.

note: u,w,v are vectors.
dot= dot product

2007-09-23 16:05:48 · 2 answers · asked by blueangel 2 in Mathematics

2007-09-23 16:04:02 · 2 answers · asked by Kenster102.5 6 in Biology

Just wondering what anyone thinks of it.

2007-09-23 16:02:26 · 2 answers · asked by Isaac C 1 in Physics

http://answers.yahoo.com/question/index;_ylt=AryCOW.QDv5_GevOAYq8Vxzsy6IX;_ylv=3?qid=20070923194947AAGQrRQ

2007-09-23 15:57:00 · 1 answers · asked by Princess Consuela B. Hammock 5 in Other - Science

2007-09-23 15:54:41 · 4 answers · asked by Anonymous in Biology

2007-09-23 15:54:01 · 4 answers · asked by arcelie 1 in Biology

Does it work through artificial opiates (similar to the body's natural endorphins), or does it affect people through some other way?
I know that heroin and morphine are artificial opiates, and although they are much more damaging than marijuana, do they work the same way?

2007-09-23 15:52:47 · 6 answers · asked by julka323 3 in Medicine

how does energy flow in the ecosystem?

2007-09-23 15:50:17 · 4 answers · asked by Anonymous in Biology

is there a website or book, that will show me maps from a long time ago? like when the persians and other old towns/cities were on the map?

2007-09-23 15:43:56 · 2 answers · asked by Hosgus™ 2 in Geography

Ok, I just want an example of any star how it evolves from it being created until it dies. Just describe it.

Thanks

2007-09-23 15:43:31 · 5 answers · asked by bballvr14 1 in Astronomy & Space

Please read on:

Wind tunnel strength is being used by volunteers wearing toupees attached with a strong adhesive. If the toupee blows off, the wind tunnel is considered to be safe in testing the strength of airplane wings. However, if a man's toupee is sucked into an aircraft's jet engine while he is on the tarmac, he may be charged with sabotage. Balding pilots are advised to take note of this.

Is this a good way to test airplanes?

2007-09-23 15:41:51 · 10 answers · asked by Yafooey! 5 in Other - Alternative

If someone swallowed a magnet, dime-sized, and they stand belly-faced to something metal, would they get attached? random thought and no i aint gonna try... lol

2007-09-23 15:41:04 · 9 answers · asked by Christie 2 in Zoology

I'm given a statement such as the vector position of a particle varies in time according to the expression r = (8.60 i - 8.40t^2 j) m.
Somehow, i have to find expressions for the velocity and acceleration as functions of time. (Using t, i, and j as necessary.); and determine the particle's position and velocity at t = 3.00 s.

Unfortunately, I'm not even sure how to rearrange it (or what its wanting me to rearrange into a function a T)

2007-09-23 15:40:09 · 1 answers · asked by phrozenwarrior 3 in Physics

find functions f(x) and g(x) such that the lim f(x) as x approaches a does not exist for every a
the lim g(x) as x approaches a does not exist for every a
but the lim f(x) + g(x) does exist for every a

2007-09-23 15:37:50 · 2 answers · asked by BrokenSentences 2 in Mathematics

Preform the indicated operation : Simplify if possible.

1) (x / x^2 + 2x +1) + ( 1 / x^2 + 5x +4)

2) ( x / x^2 +15x +56) - ( 1 / x^2 + 13x + 42)

2007-09-23 15:36:38 · 3 answers · asked by Anonymous in Mathematics