Science & Mathematics - 19 June 2006

molecular biology lab

2006-06-19 11:04:27 · 2 answers · asked by Eliana B 2 in Biology

We have seen great progress in technology over the last 200 years: Industrial, Atomic, Space, Information.

There's much research into nanotechnology. Is nanotech already making a technological impact? What do you think would be the next nanotech advances?

2006-06-19 11:01:00 · 7 answers · asked by Kreb D 2 in Other - Science

I just found it pretty incredible.

2006-06-19 11:00:54 · 22 answers · asked by peaco1000 5 in Geography

In the movie "Chasing Liberty" the river Danube was called this by Ben Caulder

2006-06-19 10:56:04 · 16 answers · asked by anitarey@swbell.net 1 in Botany

Hydrogen has a single electron and earth has 1 moon. Is there a relationship with the earth and moon that attracts so much hydrogen to this planet? i.e water?

2006-06-19 10:55:01 · 4 answers · asked by Anonymous in Astronomy & Space

I'm aware that Abel proved that there is no formula to factor polynomials of degree 5 and higher, but I understand that you can represent these equations as matrices, and then the eigenvalues are the roots of the equation. How can I construct the matrix for the formula expressed above so that I can find its roots by finding the eigenvalues?

2006-06-19 10:49:21 · 5 answers · asked by professional student 4 in Mathematics

OK, there are three men who are sentenced to death. One man has very high intelligence, the next man has average intelligence and the last man has low intelligence (this is importannt apparantly) The person who is incharge of hanging them says " OK because it is Friday and I am nice I will let one of you go, I have three black dots and two white dots, I am gong to blindefold you and put one dot on each of your heads. You are not allowed to talk or make any form of communictaion. Then you must guess which colour dot is on your head. Whoever gets it right first goes free" There are no mirrors and no one is allowed to help you. You are not allowed to remove the dot or swap dots. There is a logical answer. Then the man with high intelligence says, "I have a black dot on my head" How did he knoe? But I don't know it. HELP ME

2006-06-19 10:41:12 · 15 answers · asked by lilmisschattybox129 1 in Mathematics

In hypothesis testing (in both paired and unpaired situation), when you deal with small samples you cannot use the student t test. Instead, you have to rely on nonparametric tests. They are called nonparametric because unlike the t test, they do not rely on the assumption that the underlying distribution is normal (with a relevant mean and standard deviation).

The question is how small is small? Different sources mention different minimum sample size so you can use the t test. Otherwise, you can't.

So, in your expert opinion what size sample do you need? Make sure to explain why and mention your background and reference. Explanation, credentials, reference will be heavily weighted in my rating the answer.

2006-06-19 10:33:08 · 4 answers · asked by Gaetan 3 in Mathematics

This asteroid is suposed to be very close to the earth on july 3 2006...very scary to me!!!

2006-06-19 10:29:32 · 9 answers · asked by SERGIO C 1 in Astronomy & Space

I heard about this thing from a friend of mine called a multiverse. Does anyone think that there really are an infinite amount of other universes out there where things are different? My friend said that there is a different universe for every course of action. He told me that there is a multiverse of present where all of our actions accumulate. But he also said that there is a multivers, for instance, if i brushed my teeth this moring there would be a multivers in which i wouldnt, or a multiverse in which i would try to brush my teeth but inexplicitly burst into flames. I was just wondering if anyone could tell me their view of this strage idea?

2006-06-19 10:29:14 · 8 answers · asked by Cameron F 2 in Astronomy & Space

2006-06-19 10:21:45 · 11 answers · asked by Anonymous in Earth Sciences & Geology

NEVER!!!!

2006-06-19 10:19:43 · 20 answers · asked by davidbarza9_50 1 in Weather

can someone plz plz plz explain to me wat "DAYLIGHT SAVINGS" r??? i alwayz come across it,, bu i never reall knew wat it meant. thax
~~"a" style

2006-06-19 10:19:17 · 8 answers · asked by BABY~3THO 2 in Geography

It's the same questions that i posted, but i forgot to put that i wanted the answer explained also. Thanks for the responses.

2006-06-19 10:18:11 · 3 answers · asked by Letrise 5 in Mathematics

2006-06-19 10:18:02 · 11 answers · asked by Mark H 2 in Mathematics

1. Once you answer, please answer my other question about memory loss and fainting.

2. Here are SOME specific areas that I'm looking for:
-Neurology
-Blood and low blood sugar
-Fainting (if you know about what causes it and what can result from it)
-Memory loss (short term and long term)

2006-06-19 10:14:28 · 13 answers · asked by Anonymous in Medicine

each letter is a number, just as if you would add 4 numbers and have a sum. What are the letter=number (the same letter represent the same number)

PRAWA+LEWA+PRAWA+LEWA=MARSZ

2006-06-19 10:14:06 · 6 answers · asked by Desert 4 in Mathematics

I know, do you? Explain it to me so I might learn something new about it.

2006-06-19 10:12:59 · 13 answers · asked by trancevanbuuren 3 in Physics

2006-06-19 10:12:52 · 8 answers · asked by rosco 1 in Other - Science

Let us consider the equations

X^2+pX+q=0 and
X^2+pX-q=0

where p, q are integers, q<>0 and the solutions of each equation are integers. Prove that there are a, b integers such as p^2=a^2+b^2 (a<>0, b<>0).

2006-06-19 10:08:58 · 7 answers · asked by Cosmin C 2 in Mathematics

2006-06-19 10:07:36 · 1 answers · asked by Darthritus 3 in Earth Sciences & Geology

These problems are dealing with proportions. Problem 1: The property tax on a $45,000 home is $1912.50. At the same rate what would be the property tax on a $60,000 home? Problem 2: A computer prints 2000 characters every 3 seconds. If there are approximately 3300 characters on a page, how many seconds willit take to print 2 pages?

2006-06-19 10:07:34 · 12 answers · asked by Letrise 5 in Mathematics

2006-06-19 10:06:07 · 2 answers · asked by Anonymous in Chemistry

2006-06-19 10:04:57 · 17 answers · asked by DOZA 3 in Zoology

The question being asked does not include "Black Holes." Mainly because that they are usually very large in size, but their mass is unkown.

2006-06-19 10:03:59 · 13 answers · asked by alero5752@sbcglobal.net 1 in Astronomy & Space

2006-06-19 10:00:57 · 5 answers · asked by Anonymous in Weather

2006-06-19 09:58:45 · 9 answers · asked by Kyle W 3 in Other - Science

2006-06-19 09:58:34 · 7 answers · asked by Anonymous in Biology

2006-06-19 09:55:25 · 4 answers · asked by meta-morph-in-oz 3 in Physics

Thanks

2006-06-19 09:53:01 · 3 answers · asked by Anonymous in Mathematics