Science & Mathematics - 27 November 2007

2007-11-27 23:58:32 · 9 answers · asked by jp 1 in Zoology

2007-11-27 23:54:05 · 5 answers · asked by Joel K 2 in Mathematics

Can any one tell me in layman's language, please? Thanks!!!

2007-11-27 23:53:18 · 10 answers · asked by Aristotle 3 in Medicine

Isn't a little goofiness good for us all?

2007-11-27 23:49:14 · 8 answers · asked by in a handbasket 6 in Weather

I've been observing this for over a month. It is very visible and low around 3:30 a.m. Then as time progresses, it moves northward as the sun comes up. Then it isn't visible. Some have said it was comet Holmes, some have said it might be Venus. I have never seen a star this bright and low ever before. On a clear night you can't miss it. It looks like an airplane or something but of course isn't moving. It looks different from stars. If you know what I'm talking about please write something even if you don't know what it is. It seems like no one has noticed it except for my wife and I. It doesn't seem to be in the place that comet Holmes is supposed to be, and I don't know why Venus would be so bright recently. Thanks for your help.

2007-11-27 23:21:54 · 10 answers · asked by anj 2 in Astronomy & Space

rumor spread this integral can be also evaluated by means of complex numbers; please show work as I’m quite unaware how to do it this way;

2007-11-27 23:13:12 · 3 answers · asked by Anonymous in Mathematics

2007-11-27 23:11:13 · 14 answers · asked by edsoames 1 in Astronomy & Space

Someone told me I had to smelt it.

2007-11-27 22:46:07 · 1 answers · asked by roxyandneo 1 in Chemistry

Anyone willing to show me how to do this one?Thanks!

2007-11-27 22:43:10 · 3 answers · asked by Anonymous in Mathematics

An opinion- if one use Quantum for see in the future and formulate this practice as "asking the Matrix" and have some results is this technolearning and all people could do this in their 90 % of brain?

2007-11-27 22:33:25 · 3 answers · asked by IndrisOK 2 in Other - Alternative

In a 600-MWel-coal-fired power plant, the following coal shall be used for combustion. C = 76 %, H = 5 %, O = 14 %, S = 3.5 %, N = 1.5 % (waf); w = 11 %, a = 14 %, calorific value: Hu = 23,4 MJ/kg. The efficiency of the power plant is to be assumed as 38 %
a) Calculate the mass flow of dry air for full load for a by 70 % overstochiometric combustion (fluidised bed firing system).
b) Calculate the mass flows of the constituents of the flue gas.
c) The desulphurisation is done with a rather cheap mineral called dolomite (CaMg(CO3)2) which is given to the fluidised bed reactor and spent in large quantities (four times stochiometric quantity). How much dolomite is consumed? How much gypsum is created?

2007-11-27 22:13:06 · 1 answers · asked by Anonymous in Engineering

use de moivre's theorem to solve z^5=1

please help me, im so lost!
thanks!

2007-11-27 22:08:09 · 6 answers · asked by Anonymous in Mathematics

I'm doing a research assignment on this at the moment so I want a non-biased opinion and statements. No religious stuff about how Creation is true or anything (I am Christian). This project requires non-biased information so yea.

2007-11-27 21:54:31 · 8 answers · asked by zanzabar 2 in Biology

2007-11-27 21:54:21 · 6 answers · asked by pawan kumar s 1 in Astronomy & Space

I'm learning about IONIC solids and COVALENT solids.

How can I explain how their bonds have to do with:

1. Odor
2. Hardness
3. Melting point
4. Solubility with water
5. Solubility with propanol
and 6. Electrical conductivity


(best answer= 10 points, don't forget...)

2007-11-27 21:42:14 · 4 answers · asked by Zobbiezob 3 in Chemistry

2007-11-27 21:41:47 · 10 answers · asked by Grinning Football plinny younger 7 in Zoology

2007-11-27 21:39:23 · 14 answers · asked by matthew b 4 in Physics

2007-11-27 21:26:21 · 11 answers · asked by Anonymous in Geography

find the 2 tangent vectors to:
X = (cosh(A)cos(B) , cosh(A)sin(B) , sinh(A)) at A=B=1
hence find the tangent plane at this point

2007-11-27 21:23:20 · 1 answers · asked by dposters 1 in Mathematics

Do electrons travel faster than the speed of light?

2007-11-27 21:09:51 · 16 answers · asked by Anonymous in Astronomy & Space

i been wondering how our eyes (or interpretation of our brain) can tell us estimation of the distance of an object. Is it because of the light speed reflecting to our eyes of is it because of the light frequency??

2007-11-27 20:58:31 · 5 answers · asked by eyeshield42 3 in Biology

?

2007-11-27 20:57:30 · 3 answers · asked by cucumis_sativus 5 in Other - Science

2007-11-27 20:51:19 · 2 answers · asked by rachelcacamace 1 in Biology

2007-11-27 20:48:39 · 3 answers · asked by Anonymous in Chemistry

I'm always hearing people say:
"... but what's the alternative - there isn't an alternative..."
and
"... the alternative is much worse..."

So we have cars & power stations causing pollution, which is probably causing global warming... we have to endure endless speeches by politicians who do very little, constant price rises, long working hours, heavy taxes, half the world starving...

If we could end the confusion about this, wouldn't that make a change?

If you want to know what the alternative is, and discover that the alternative is soooo much better than what we currently endure, CHECK OUT THIS LINK:
http://www.the-alternative.org.uk

There's loads of really relevant, important info. there for you to download - all for free, with no pop-ups or spam!

2007-11-27 20:48:00 · 9 answers · asked by Anonymous in Other - Alternative

y = xsqrt(2-x^2)

2007-11-27 20:45:47 · 4 answers · asked by xìn xīn 1 in Mathematics

I'm taking Numerical Analysis right now, and my current section is Stiff Differential Equations.

I'm proving that the Implicit Trapezoidal method is A-stable.

In the end of the proof, this is what it says:

|Q(hk)| < 1 when Re(hk) < 0.

Notice that "hk" is just a product of two constants.

SO, "Re" is most likely a function.

Does anyone know what "Re" or "Re()" is? Please help.

2007-11-27 20:43:10 · 2 answers · asked by Anonymous in Mathematics

Even with plenty of food around a sloth can starve to death when there are clouds in the sky. Why? This is a real question. Recommend any websites to find answer?

2007-11-27 20:36:29 · 4 answers · asked by e s 2 in Zoology

We have seen alien's spaceships moving in the sky just above the surface of earth ..many of us have watched their spaceships and now we know aliens do exist .. Why is NASA reluctant to release anything related to aliens?

2007-11-27 20:30:00 · 22 answers · asked by intellect_inside 2 in Astronomy & Space

A pulley of radius 20 cm turns at 6 revolutions per second, what is the linear velocity of the belt driving the pulley in meters per second?

Is 753.98m/s the solution?

2007-11-27 20:29:08 · 2 answers · asked by hp 1 in Mathematics