Science & Mathematics - 18 September 2007

1) integral x/(x+1)^1/2 dx
2) integral x^3(x^2+1)^1/2 dx
Please show the workings clearly, thanks

2007-09-18 22:04:09 · 4 answers · asked by Anonymous in Mathematics

if u help me with many. ill give u 5 points for each answer by posting another question

u can list websites that are helpful

I have to explain the structure of the space station and what rooms its composed of. I need to have like the floor plan of the space station..

Also I can bring 6 people total.. What kind of people do I need?? not like celebrities... like people with jobs..


***!!! Important !!!*** I need to find a way to make water all the way... meaning that I need unlimited water there.. I was thinking about a machine with condensed hydrogen + oxygen + spark to create water... After creating the water, how should I make it to like be unlimited?? I have to use like a cycle.. I think.. Help please~

And if I just have plants, will there like be oxygen and they can live? and other living things can live too?

Also have to describe the path of energy and matter through living systems and the physical environment (trophic levels? biomass? dont get this)

2007-09-18 21:52:06 · 3 answers · asked by Anonymous in Biology

I was kind of bothered by this. Newtons first law states that Force is equaLs to mass multiplied with acceleration. Tomove an object you need to exert force. Assume that we have a car moving constantly at the speed of 60mph. Since I said constant, then it means there would be no acceleration right? Since there's no acceleration, 0 m/s2 multiplied by the mass of the car would mean that there's no force or F = 0, right? Then, why would a car going at constant 60mph would hit a man and would send the man flying? The speed was constant, and there was no acceleration, which means no force, but why did the car move the man when in fact you need force to move something. Does this mean that I proved that Newton's law is quite wrong?

2007-09-18 21:48:36 · 11 answers · asked by love_doctor 4 in Physics

i'm talking about someone who will totaly chainge man outlook on something.

2007-09-18 21:47:39 · 12 answers · asked by strongbow 3 in Physics

This is for a project I'm helping someone with.

What sort of chemicals would cause temporary paralysis when injexted/injested/inhaled?

2007-09-18 21:28:48 · 1 answers · asked by Bob B 7 in Medicine

When an instrument such as a themocouple or an RTD is not functuioning properly, how do you locate it in the process DCS or PLC, isolate it and fix it. Please you can use general terms not specific to a particular type of DCS or PLC. In particular I would like to know how to get the address of that instrument and its configuration etc

2007-09-18 21:26:11 · 3 answers · asked by kawuremi 1 in Engineering

2007-09-18 21:15:27 · 7 answers · asked by Genesis 2 in Zoology

and if not why not?

2007-09-18 21:09:09 · 12 answers · asked by strongbow 3 in Astronomy & Space

why or why not

2007-09-18 21:05:59 · 3 answers · asked by Anonymous in Astronomy & Space

I had thought that as you travel faster time goes slower, but only for the observer.

But I remember an experiment ran by NASA several years back, where they took an atomic clock on one of the shuttles, and compared it to an atomic clock on earth when it landed, there was definately a difference.

How is this possible if it's only the observer who notices the slowing of time? Very confused.

2007-09-18 21:03:38 · 6 answers · asked by Anonymous in Astronomy & Space

BRrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

2007-09-18 21:01:22 · 13 answers · asked by Anonymous in Weather

2007-09-18 20:59:27 · 3 answers · asked by Phiedoe 1 in Engineering

If you were looking at the earth from the side of the moon that faces the earth , what would you see during (a) a total lunar eclipse? (b) a total solar eclipse?

2007-09-18 20:59:10 · 6 answers · asked by Anonymous in Astronomy & Space

2007-09-18 20:57:55 · 2 answers · asked by Anonymous in Astronomy & Space

If the sun is also orbiting the centre of the milky way galagy, this must increase the speed that we are travelling through space. How fast are we actually moving

2007-09-18 20:53:33 · 4 answers · asked by peter h 1 in Astronomy & Space

2007-09-18 20:49:22 · 3 answers · asked by ponnusamy b 1 in Chemistry

2007-09-18 20:48:49 · 7 answers · asked by kastro 1 in Mathematics

2007-09-18 20:42:37 · 13 answers · asked by Anusha K 1 in Weather

2007-09-18 20:40:43 · 5 answers · asked by shubumkin 1 in Earth Sciences & Geology

2007-09-18 20:40:39 · 10 answers · asked by peter h 1 in Astronomy & Space

2007-09-18 20:38:30 · 6 answers · asked by sivakali y 1 in Engineering

Help please..

2007-09-18 20:30:42 · 1 answers · asked by sam h 1 in Mathematics

6c^3 - 3c^2 - 45c= 0

x^4 - 10x^2 + 9 = 0

a^4 + a^2 - 2 = 0

4m^4 + 17m^2 + 4 = 0


i would apreciate it if you show step by step on at least a few so i can get the rest....

2007-09-18 20:28:26 · 4 answers · asked by funkenstien 2 in Mathematics

any support groups to help her what is outlook she can walk few yards with 2 sticks

2007-09-18 20:26:12 · 1 answers · asked by dollydog 1 in Medicine

first i need to use the distributive property to rewrite each expression.....
1. 5(2x + 7)
2. 6x - 6y
3. 3(m + n)
4. 3p - 3q

and i need to know if when you are adding things up do you add the exponents up or keep them the same
example: 3x to the second power plus 2x to the second power......would it be 5x to the second power or 5x to the fourth power??

2007-09-18 20:25:59 · 6 answers · asked by haybish2012 3 in Mathematics

1. prove that cosθ/(1-tanθ)=(cosθ-1)/(1-〖sec〗^2 θ)

2. simplify tanθ- cosθ/(1-sinθ)

3. find the equation of the tangent to the curve y=〖4x〗^2+
2x+sin x at x= n/3

2007-09-18 20:25:25 · 2 answers · asked by MAN T 1 in Mathematics

2007-09-18 20:23:56 · 8 answers · asked by glugorian2 1 in Astronomy & Space

2007-09-18 20:18:22 · 7 answers · asked by Anonymous in Chemistry

During three Antarctic voyages between 2002 and 2005, the German research vessel, Polarstern discovered more than 700 new species of marine life, in frigid depths ranging from 774 to 6,348 meters (about 2,500 to 21,000 feet), which included an exotic creature resembling a fossil trilobite. Any amateur fossil hunter will see in this newly-discovered creature a strong resemblance to the trilobite — a crab-like arthropod which presumably went extinct more than 250 million years ago. For details see Yahoo Group: Auldaney, posting Living Trilobite Discovered!

2007-09-18 20:02:57 · 4 answers · asked by Jeremy Auldaney 2 in Earth Sciences & Geology

2007-09-18 19:54:43 · 2 answers · asked by genelan 1 in Geography