Science & Mathematics - 3 July 2007

I keep hearing that the world is going to end on December 21, 2012...where are people getting this theory from?

2007-07-03 06:25:40 · 14 answers · asked by Lindsay 3 in Astronomy & Space

2007-07-03 06:23:07 · 6 answers · asked by Robert C 1 in Mathematics

simplify the expression.

-2x^-2y^0


i aslo need help in this problem..

simplify the expression.

2x^2y^7/6xy^-1

2007-07-03 06:21:36 · 8 answers · asked by lost 2 in Mathematics

Can you tell me what is in the middle of Greenland that looks like a HUGE ship?

2007-07-03 06:21:18 · 2 answers · asked by Pinolera 6 in Geography

scientists predict the weather for the next 10, 15, 20, even 50 years? So how can they predict that the earth's temperature will rise to the point that all the ice caps will melt and much of the land will be flooded?

2007-07-03 06:17:27 · 5 answers · asked by Anonymous in Weather

2007-07-03 06:15:02 · 13 answers · asked by Anonymous in Astronomy & Space

2007-07-03 06:09:13 · 13 answers · asked by nancy z 1 in Mathematics

2007-07-03 06:08:47 · 7 answers · asked by DJ 2 in Chemistry

It's the ability to move things with your mind.

2007-07-03 06:08:30 · 21 answers · asked by Candi Apples 7 in Parapsychology

my child needs to create a house that is earthquake,tornado,hurricane,and tsunami resistance house.

2007-07-03 06:05:19 · 10 answers · asked by Marisol 1 in Earth Sciences & Geology

Track gauge is D = 4 ft 8 1/2 inch.
http://en.wikipedia.org/wiki/Track_gauge
Radius of boxcar wheels is r = 1ft.

How many more revolutions did left wheels
of the boxcar, than its right wheels, after
locomotive copletes one loop.

2007-07-03 05:57:46 · 4 answers · asked by Alexander 6 in Physics

So everyone knows the beat effect, right? When two hypersonic sound waves interfere a beat is produced whose frequency is equal to the difference between the two waves. If the difference is a frequency in the human hearing range, then we hear a sound from the interference.

My question, which I asked before but did not receive the answer I was looking for, is "does this happen with electromagnetic waves?" If two waves, be it UV, X-ray, or gamma, interfere and have a difference that correlates to a frequency in the visible light spectrum, then would you see a light? I know that being exposed to gamma waves would kill you before you had a chance to appreciate the interference or UV waves would burn your retinas. I don't care. Would there be a visible light emission in any case?

2007-07-03 05:56:03 · 4 answers · asked by hung l 2 in Physics

I am also getting a minor in Biology. have military experience so I was orienting myself toward government, but what else could I do? I would love to work in Europe.

2007-07-03 05:56:01 · 1 answers · asked by badbrad923 1 in Botany

1.
A person leaves home at 7:00am and drives to a destination at a rate of forty mph. After spending one hour at the destination, the person returns at a rate of twenty-five mph and arrives home at 2:30pm. How far is the trip to the destination?

2.
The sum of two numbers is ninety-one. If the larger number is divided by the smaller number, then the quotient is fourteen and the remainder is one. Find the numbers.

2007-07-03 05:50:59 · 7 answers · asked by Anonymous in Mathematics

The cost of a CD player is £84 plus 17
1/2 % tax.
What is the total cost of the CD player?

2007-07-03 05:46:25 · 8 answers · asked by Top_Gear_Biggest_Fan 5 in Mathematics

And explain why putting a telescope in space helps in each case.

2007-07-03 05:42:56 · 8 answers · asked by Anonymous in Astronomy & Space

I am having trouble setting up this problem, if you could help me I would really appreciate it!

Thank you in advance.

A lamina occupies the part of the disk x^2 + y^2 ≤ 25 in the first quadrant and the density at each point is given by the function p(x,y) = 3(x^2+y^2).

What is the moment of inertia about the origin, ∫(x^2+y^2) ρ(x,y)dxdy ?

2007-07-03 05:41:20 · 2 answers · asked by merfie 2 in Mathematics

simplify the expression

(x^2y^2)^-1

2007-07-03 05:40:31 · 6 answers · asked by lost 2 in Mathematics

Many theists fall into the catergory of believing in a "God of the gaps". That is, if you don't understand it, it must be the work of god.

The latest Scientific American has a wonderful article on the beginnings of life, based on far smaller and simpler building blocks than RNA. The developing "M" theory is set to give a far greater understanding of the beginning of the universe.

Is god about to start running out of gaps?

2007-07-03 05:39:45 · 9 answers · asked by Anonymous in Physics

I want to improve a gear wheel by making the gears magnetic,thus a pear of gear wheel will have less contact,also less rub.so how to make the my needed magnetic field?

2007-07-03 05:27:26 · 2 answers · asked by Anonymous in Physics

A block of mass 6 kg on an incline angled at 24 degrees above the horizontal experiences a frictional force resisting its tendency to slide along the ramp. The upper limit on this frictional force is .13 of the normal force between the block and the ramp. What force must be exerted parallel to the ramp so that the block will slide at a uniform velocity up the ramp?

2007-07-03 05:24:22 · 2 answers · asked by benzene boy 1 in Physics

I have learned to wait until the last min to do my homework and i am totally lost.

Find the equation, in standard form, with all inter coefficients, of the line perpendicular to x+ 3y =6 and passing through (-3, 5). Show all work

2007-07-03 05:21:49 · 11 answers · asked by CollegeYearRound 1 in Mathematics

2007-07-03 05:20:42 · 13 answers · asked by chelsea fan 2 in Medicine

I have heard about the type of kinesis, biokinesis, and was wondering if anyone could tell me how to do it?
I have heard the whole 'DNA stream' thing, and don't really get it.
Any help would be really appreciated

2007-07-03 05:17:05 · 0 answers · asked by Linda A 1 in Biology

2007-07-03 05:14:39 · 30 answers · asked by wedfg 2 in Mathematics

Last night I was in my living room and on the floor was a bug (like a small beetle thing (yes I killed it). And near it was a slithering thing about as big as a 2 or 3 inch piece of yarn/string. It was moving like a snake and before I had killed the other bug I thought that this long thing was its tail. Could you tell me what it was? (the long slithering thing!!)

2007-07-03 05:12:01 · 7 answers · asked by Anonymous in Zoology

2007-07-03 05:09:21 · 14 answers · asked by colorado43 3 in Mathematics

2007-07-03 05:05:43 · 22 answers · asked by Anonymous in Chemistry

2007-07-03 04:55:39 · 5 answers · asked by dave777 4 in Engineering

Why would they discriminate so? If women discriminated like that,,,, What would we call MEN who didn't measure up? Menoids? Mennettes? Just give 'em a number? Weep for poor Pluto......

2007-07-03 04:48:14 · 12 answers · asked by cme2bleve 5 in Astronomy & Space