Science & Mathematics - 16 November 2007

Take any whole number.
Rearrange the digits to make a new whole number.
Subtract the lower whole number from the higher whole number.
The answer (another whole number) is always divisible by 9. Why?

2007-11-16 03:01:41 · 9 answers · asked by Anonymous in Mathematics

2007-11-16 03:01:17 · 8 answers · asked by Anonymous in Geography

2007-11-16 02:58:12 · 3 answers · asked by Anonymous in Geography

Ok, I have kind of bad eyesight...

The other day, I was looking in a mirror, and noticed that things that are far away are still blurry.

I turned around and looked at the objects directly, and noticed that when I look in the mirror, they are just as blurry as looking at them directly.

Why is this? It seems like since I am so close to the mirror, and am seeing it up close, that the objects wouldn't be blurry...

Thank you!

2007-11-16 02:56:53 · 11 answers · asked by Dork with Questions 2 in Physics

2007-11-16 02:56:52 · 17 answers · asked by TD Euwaite? 6 in Mathematics

Translate into mathematical expressions and Find the number
Enter numeric answers. Use x as variable.
Three less than two-thirds of a number is three
>2 /3 x - 3 = 3
>2/3 x - 3 + 3 = 3 + 3
>2/ 3 x / 2/ 3 = 6 / 2/3
> x = 9 numeric answer
>
>The ratio of a number and five is two.
>x / 5 = 2
> x = 2 X 5
> x = 10
>
>The total of three less than a number and seven is ten
>x - 3 + 7 = 10
>x + 4 = 10
>x + 4 - 4 = 10 - 4
> x + 0 = 6
> x = 6 answer
>
>The product of two and three less than a number
>is a negative four.
>2(x - 3) = -4
>2x - (2 X 3) = -4
>2x - 6 = -4
>2x - 6 + 6 = -4 + 6
>2x - 0 = 2
>2x = 2
>2x / 2 = 2 / 2
> x = 1 numeric answer
>
>The product of three more than twice a number
>and two is fourteen.
>3(2x) + 2 =14
>3 X 2x + 2 = 14
> 6x + 2= 14
> 6x + 2 - 2 = 14 - 2
> 6x = 12
> 6x / 6 = 12 / 6
> x = 2 answer
>Are all these numeric answers correct ? yes or no

Nov 16, 2007 Friday

2007-11-16 02:56:48 · 2 answers · asked by Anonymous in Mathematics

For example, when something is red, it's absorbing all the colors of light, besides red.

So does that mean water is absorbing all the colors of light, or none at all?

Thank you.

2007-11-16 02:49:01 · 4 answers · asked by Dork with Questions 2 in Physics

2007-11-16 02:48:58 · 7 answers · asked by Anonymous in Mathematics

The drawing shows two graphs that represent a transverse wave on a string. The wave is moving in the +x direction. Using the information contained in these graphs, write the mathematical expression (similar to Equation 16.3 or 16.4) for the wave. (Answer in terms of t and x. Assume standard units.)


http://img85.imageshack.us/img85/8610/1626altlo7.gif

2007-11-16 02:47:20 · 1 answers · asked by Anonymous in Physics

is New Hampshire on the map..can someone please help i can't find it!

2007-11-16 02:43:09 · 9 answers · asked by Anonymous in Geography

2007-11-16 02:41:20 · 9 answers · asked by Anonymous in Mathematics

im doing a debate in class for theis topic my opponent wants to throw that it would be expensive and i was looking to find out exactlly how expensive so that i could put it into perspective when i find the right argument to say back to my opponent.

2007-11-16 02:32:51 · 5 answers · asked by Anonymous in Engineering

1^2007 + 2^2007 + 3^2007 + ... + 2007^2007. Find the last two digits of the sum of the summation.

2007-11-16 02:32:41 · 5 answers · asked by heru_prayitno 1 in Mathematics

2007-11-16 02:32:20 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2007-11-16 02:31:07 · 8 answers · asked by yerfavoritefiddler 4 in Botany

I vaguely remember in school (god i feel old) my physics teacher telling us that the universe is expanding or something. And he also told us something about it making a noise like a racing car (although that may have been something else)

Anyway is this a theory or is there evidence for it?

2007-11-16 02:29:08 · 8 answers · asked by Lynsey W 1 in Physics

Hi all, im currently facing the problem with low air pressure to operate on two machine together with the single input air hose, Booster Regulator can help?

2007-11-16 02:26:20 · 1 answers · asked by su 1 in Engineering

Why is it that borax still dissolves at room temperature, when it's deltaG is postive?

2007-11-16 02:25:35 · 1 answers · asked by Anonymous in Chemistry

I was wondering.... i've heard that st johns wort can effect the pill, but then antibiotics are supposed to and i've been on those for the last three years not using anything else and it's still never failed. What are the chances of st johns wort being the same?

2007-11-16 02:24:23 · 7 answers · asked by Anonymous in Medicine

You can add, subtract, multiply, divide or use powers eg 4 to the power of 4. I have got every number up to 20 except 19. You can also stick digits together e.g 44 or 444.

2007-11-16 02:21:13 · 8 answers · asked by me9189 2 in Mathematics

2007-11-16 02:16:34 · 13 answers · asked by 2gadoo 5 in Weather

Honestly, if the universe was just.. nothing, no space, no stars, to planets... what color would it be? I mean it can't be no color.... it has to be a color.

2007-11-16 02:13:11 · 14 answers · asked by Wabagoo {MCRmy} 6 in Astronomy & Space

2007-11-16 02:10:39 · 15 answers · asked by Anonymous in Mathematics

is it gandak,kosi or ganga?

2007-11-16 02:06:39 · 7 answers · asked by Anonymous in Geography

I know √15 + √15 =2 √15. Now if you wanted to add 3 to the solution, can you.

Say, 3 + 2 √15, would that = 5 √15?

2007-11-16 02:05:14 · 8 answers · asked by Yahoo user #084 1 in Mathematics

for the following process, how do you calculate the change in internal energy of the system and determine whether the process is endothermic or exothermic

1. a 50g sample of water is cooled from 30 degrees celcius to 15 degrees celcius, thereby losing approsimatley 3140J of heat

2007-11-16 02:04:42 · 2 answers · asked by WynnLasVegas 1 in Chemistry

do u think its possible ?

2007-11-16 01:59:28 · 17 answers · asked by greengrass44444 4 in Parapsychology

2007-11-16 01:53:44 · 4 answers · asked by Maggie 2 in Earth Sciences & Geology

2007-11-16 01:53:01 · 6 answers · asked by gigi 2 in Medicine

Ok so its obvious that the sun is like a star. And I surfed the net and it said that the sun will explode like all stars. But HOW does it explode? And what about the solar system? It can't survive without the sun! What about humans? What about life?

2007-11-16 01:52:19 · 14 answers · asked by Anonymous in Astronomy & Space