Science & Mathematics - 5 August 2007

I think this is interesting:

Let P be a polynomial with integer coefficients, such that the coefficients of the leading and of the independent terms are odd and the total number of odd coefficients is odd. Like in P(x) = x^3 + 5x^2 -2x - 1. Show that P has no root with both real and imaginary parts rational.

2007-08-05 03:09:18 · 4 answers · asked by Steiner 7 in Mathematics

She was in her metal cage at the time it happened. The cage has a plastic floor. She didn't bite through it in one chomp either. It looks like she took her time chewing on the copper wire. The cord went to an aquarium pump and the pump was still operating when the chewed wire was discovered.

2007-08-05 03:01:48 · 11 answers · asked by Sherri L 1 in Other - Science

because, if this is true, then there are an infinite number of universes in existence as one expands into the other and so on, as waves in a big sea do.

2007-08-05 03:00:25 · 8 answers · asked by solupa2000 1 in Astronomy & Space

I do not believe in evolution.

I have seen eons of history revealed in the walls of the Grand Canyon. I have seen a hundred and fifty thousand years back in time with my own eyes while gazing at the Andromeda galaxy through a telescope. I have heard the low hiss of static that is the fading reverberation of the Big Bang.

I know that the ancient Greek scholar Eratosthenes accurately measured the size of the earth using geometry and reason. I know that the speed of light was first measured in 1676 by Ole Romer. He used nothing more than a telescope, knowledge imparted by Copernicus, Kepler, and Galileo, and reason.

Reason, not belief has done a much expose the mysteries of the universe. Reason does not tell us that there is a god. It doesn’t tell us that there isn’t a god, either. It does make me question writings that are purported to be the literal word of god.

I choose not to believe. I accept those things that reason leads me to conclude. I accept that the earth is about four billion years old, based on the geological and astronomical evidence that I have seen, and understood. I accept the notion of biological evolution based on the fossil evidence as interpreted by professionals, who I trust to be reasonable people.

I accept Darwin’s basic premise that we evolved from ancestors that we share, most recently, with the great apes. I have heard advocates of “creation science” claim that Darwin’s theory has been disproved. This is not a reasonable claim. I acknowledge that flaws have appeared in Darwin’s theory over the years, as the fossil record has been more thoroughly explored. It now seems that evolution occurred in spurts, not gradually, as Darwin proposed.

2007-08-05 02:58:39 · 12 answers · asked by Anonymous in Other - Science

Evaluate the problem.
1. -4 |-4|
2. -8 x |2|
3. |5| - |-5|
4. |x| - |-x|
5. 0 |-6|
6. |3 - 5 + 7|
Evaluate, given a = 5, b = -3, and c = -2.
1. |a + b|
2. |a + b - c|
3. |-a^2|
4. |bc|
5. |c^2 + b^2|

2007-08-05 02:54:17 · 5 answers · asked by nicholas_alex_bailey 2 in Mathematics

Is it too old be a Professional Astronomer or Astrophysicist at age 43? My older brother is finishing his Phd this year ( Astrophysics). He still look very young like early 30s even tho he is 43 thsi year.healthy and very enthusiastic about science.

2007-08-05 02:53:39 · 10 answers · asked by PussyCath 1 in Astronomy & Space

1. f(w) = ln 4th root of [(3w+1) / (2w-5)]
2. ln(xy) + x + y = 2

guyz.. please help me in those problems.. huhuhuh.. im so sorry .. thank you in advance..!

2007-08-05 02:52:30 · 3 answers · asked by Anonymous in Mathematics

no sign of them in the Bible and none on Noahs ark

2007-08-05 02:50:43 · 19 answers · asked by jim e 1 in Earth Sciences & Geology

gravitational force takes into account the product of both masses. if one mass is zero then why isnt the force acting on the photon zero?

2007-08-05 02:49:04 · 16 answers · asked by lilphil1989 2 in Astronomy & Space

If dogs communicate through barking sound, when humans make these barking noises towards dogs, is it possible that we are actually saying words to these dogs and is that why they look in sometimes a curious way, and sometimes they turn very hostile when some barking sounds are made???



Just want to know if it is possible and can someone elaborate

2007-08-05 02:48:40 · 4 answers · asked by rizz 1 in Biology

2007-08-05 02:43:59 · 10 answers · asked by Van.essa 2 in Mathematics

2007-08-05 02:40:19 · 4 answers · asked by Anonymous in Mathematics

2007-08-05 02:32:58 · 6 answers · asked by Anonymous in Astronomy & Space

I think this is interesting:

Let k >= 2 be an integer and let p be a polynomial of degree >= 2, with integer coefficients, such that the coefficient of the leading term is
positive. Show that the series Sum(n = 1, oo) 1/[k^(p(n)] converges to an irrational number.

2007-08-05 02:31:38 · 4 answers · asked by Steiner 7 in Mathematics

I mainly want to know the indications for this procedure.

2007-08-05 02:31:02 · 4 answers · asked by m.b. 2 in Medicine

how can I have a electrolysis I need to the voltage or Amper?

2007-08-05 02:31:02 · 2 answers · asked by mohammad g 1 in Engineering

if you place a paperclip below a beaker, and pour water into the beaker why can't the paperclip be seen from the side of the beaker?

2007-08-05 02:30:59 · 2 answers · asked by Anonymous in Physics

what are the changes to the world if dinosaurs still survive now? what will be the world like? what are the good & bad thing about it? what are some special features should the world exist,eg building should be strong etc...
plz help me seriously!!this is my homework!!!

2007-08-05 02:13:52 · 11 answers · asked by Anonymous in Earth Sciences & Geology

THERE ARE THREE SOUCES OF RESISTANCE IN PARALLEL CIRCIUT. TWO OF THEM ARE RATED AT 20 OLMS, THE OTHER AT 10 OLMS. What is the answer?

20 ohms
12 ohms
8 ohms
5 ohms

2007-08-05 02:09:16 · 5 answers · asked by SAMMY 1 in Physics

if CO2 is a 'heavy' gas how can it float up into the upper atmosphere where it "causes the most damage",same thing with jet engines and also has the concentration of co2 been recorded as being raised.Please no replies from tree huggers,only someone who knows the facts

2007-08-05 02:05:31 · 2 answers · asked by Anonymous in Earth Sciences & Geology

I'm writing a story, and there is a part in which I describe a toy.

So, I say:

"It was a water game, which consisted of, after the toy is filled with water, pressing a button, which GENERATED PRESSURE, and trying to insert as many rings as possible into some spears"

The part I would like people to correct is the words in capital letters.

By 'pressure' I mean, that when you press the said button, some 'air bubbles' are generated.
I'm just not sure is the term 'pressure' is correctly used here, because I know that water also exerts pressure over any body, even when there are no 'currents' or other 'forces'...

So, is it correct to say 'generated pressure'? Or would it be better if I said 'generated AIR pressure? (Or should I simply say 'generated air bubbles'?)

***

(If you would like to correct my English, that would be fine as well...
I will have learned two things new, instead of one...)

2007-08-05 02:01:13 · 4 answers · asked by Anonymous in Physics

x^2 - 4.5 x -100=0

how to solve it for roots ?

my concern is ....coefficient is 4.5 ......fraction ....so i face difficulty in factoring .

I cant use direct formula x= -b+/ sqrt(b^2-4ac)/2a ..........because its becoming messy .

can anybody suggest some smarter way to solve it ?

2007-08-05 01:58:19 · 2 answers · asked by calculus 1 in Mathematics

2007-08-05 01:39:20 · 8 answers · asked by Anonymous in Astronomy & Space

2007-08-05 01:30:03 · 2 answers · asked by Anonymous in Astronomy & Space

2007-08-05 01:27:42 · 8 answers · asked by EiBiCi 2 in Earth Sciences & Geology

2007-08-05 01:24:17 · 5 answers · asked by EiBiCi 2 in Earth Sciences & Geology

http://en.wikipedia.org/wiki/Pluto

2007-08-05 01:23:23 · 6 answers · asked by Anonymous in Astronomy & Space

2007-08-05 01:15:18 · 1 answers · asked by reuven27 1 in Botany

How would you get rid of the waste if you couldn't recycle it?

2007-08-05 01:12:23 · 6 answers · asked by tripleateam 2 in Engineering

2007-08-05 01:07:21 · 17 answers · asked by ExpERT. 3 in Astronomy & Space