Science & Mathematics - 6 January 2007

What is the discriminant test for non degenerate conics?

2007-01-06 11:45:26 · 2 answers · asked by kerbourchardalan 2 in Mathematics

I would rather look at the deepest corners of the Universe than watch a few lucky a*sholes waving at us from Mars.

2007-01-06 11:43:43 · 7 answers · asked by Anonymous in Astronomy & Space

Considering the vast distances that exist beween the stars, galaxies etc., and the general acceptance that we cannot be the only life form to have evolved in the universe...then isn't the question we sould be asking....'WHEN did other intelligent life exist', not IF it exists.....surely in a thousand years time it is more likely that we will have found countless extinct civilisations throughout the universe and none who are able to interact with us....and wouldn't this make us feel more lonely than ever?

2007-01-06 11:43:03 · 15 answers · asked by THINKER 2 in Astronomy & Space

please help me :)

2007-01-06 11:42:31 · 3 answers · asked by coolkenny45 2 in Biology

i just thought of this cause i heard that the moon is getting farther away from earth slowly so i was wondering if its possible for it (while its orbiting) to crash into the sun.

2007-01-06 11:42:11 · 10 answers · asked by Anonymous in Astronomy & Space

the question im thinking of is - does water stay hot longer in a foam cup, ceramic, glass or wax paper cup? i would put the same amount of water at the same temperature into all these cups and measured how long the temperature stayed constant with thermometers.


for the responding variable what do i measure? the temperature??

2007-01-06 11:41:49 · 5 answers · asked by Anonymous in Engineering

2007-01-06 11:36:09 · 9 answers · asked by merlyntn 2 in Mathematics

Could the position of our galaxy in the Milky Way, and among the stars, be contributing to the Global Warming problem? Could something so small as the distance to a star have any effect? Or should we just attribute it to mankind's rape of the natural world?

2007-01-06 11:35:38 · 9 answers · asked by CaptCanuck23 2 in Astronomy & Space

so thanx to those who answered my previous question which was specifically about phosphoric acid (H3PO4)

someone said that the reason why H became 3 because you need three um, was that charge? whatever, you need 3 thingies to balance it with PO4

but how did you come up with PO4? is there a way to get the 4? coz P's charge is 3 and O's charge is 2 and i dont get how 4 came out.

help again pleeeeese!

and thanx!!

2007-01-06 11:35:27 · 1 answers · asked by pweetyinpink05 2 in Chemistry

2007-01-06 11:33:59 · 6 answers · asked by jkchen1114 2 in Mathematics

theres a garden roller which has a mass of 80kg
its pulled with a force of 250N at an angle of 30 degrees to the horizontal and it moves at constant velocity....

- how is the roller able to travel at constant velocity when being pulled by a force of 250N?
- if the roller was to be *pushed* with a force of 250N at an angle of 30 to the horizontal, what would be the changes that occur to the force exerted on the ground by the roller?

plzzzz help i am sooo stuck!!!
thanxxxx

2007-01-06 11:33:57 · 6 answers · asked by 0425x 2 in Physics

2007-01-06 11:33:51 · 7 answers · asked by Anonymous in Astronomy & Space

I need a simplistic explanation but not vague at all i dont understand the concept at all so plz try to explain with the longest and simplest way possible

2007-01-06 11:32:40 · 6 answers · asked by jkchen1114 2 in Mathematics

Can we double the frequency of the crystal oscillator if connect it in series just like connecting 2 resistors of 10k each in series will become 20k total?

2007-01-06 11:31:32 · 3 answers · asked by Dominator. 2 in Physics

If (1 + tan^2 x)\(sec x) = sin^2 x + (1)\(sec^2 x) find the value of cos x

2007-01-06 11:31:12 · 2 answers · asked by questioneeeee 1 in Mathematics

2007-01-06 11:30:32 · 2 answers · asked by Paul 3 in Engineering

2007-01-06 11:30:12 · 3 answers · asked by Paul 3 in Engineering

Please!

2007-01-06 11:26:39 · 4 answers · asked by Pretty_baby 1 in Mathematics

2007-01-06 11:26:31 · 7 answers · asked by Anonymous in Biology

2007-01-06 11:25:46 · 7 answers · asked by Paul 3 in Chemistry

which brand of candles burn faster?

WHich candle burns faster ,white ones, or colored ones

2007-01-06 11:23:34 · 9 answers · asked by Anonymous in Other - Science

this is just like sayin please excuse my dear aunt sally but i need another example like thatt.but a really good one..
thankss..=]

2007-01-06 11:23:32 · 10 answers · asked by AdRiAnAlUv 1 in Mathematics

2007-01-06 11:23:17 · 4 answers · asked by questioneeeee 1 in Mathematics

Move to Iraq. Baghdad had multiple frosts in the last week of December, other places even had snow! Just proves that Nature balances everything in the end.

2007-01-06 11:23:12 · 5 answers · asked by Anonymous in Weather

I was at the zoo.

2007-01-06 11:22:58 · 8 answers · asked by Atlas 6 in Zoology

2007-01-06 11:20:47 · 9 answers · asked by Atlas 6 in Zoology

GENERAL GR 10 QUES

2007-01-06 11:19:29 · 4 answers · asked by Anonymous in Other - Science

2007-01-06 11:18:16 · 1 answers · asked by aSnxbByx113 2 in Mathematics

The combined electrical resistance R of R1 and R2, connected in parallel, is
1/R= 1/R1 + 1/R2
where R, R1 and R2 are measured in ohms. R1 and R2 are increasing at rates of 1 and 1.5 ohms per second, respectively. At what rate is R changing when R1= 50 ohms and R2= 75 ohms?

2007-01-06 11:17:46 · 3 answers · asked by lola 1 in Mathematics

i need to know this for an assignment its a general 10th gr sci question

2007-01-06 11:17:26 · 2 answers · asked by Anonymous in Earth Sciences & Geology