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Science & Mathematics - 15 September 2006

[Selected]: All categories Science & Mathematics

Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

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why is the derivative of an odd function is always even function? can someone explain this.

2006-09-15 08:58:04 · 3 answers · asked by ? 1 in Mathematics

2006-09-15 08:58:03 · 6 answers · asked by combochaos1786 1 in Biology

Apparently our early space probes such as voyager and pioneer have plutonium cores for power. Since this is 33000 times more deadly than uranium and the worst poison ever discovered would it be interpreted as an act of war by aliens who could be like us (or not)

2006-09-15 08:56:09 · 4 answers · asked by bolters37 2 in Astronomy & Space

2006-09-15 08:55:57 · 9 answers · asked by combochaos1786 1 in Biology

2006-09-15 08:55:13 · 5 answers · asked by DJ P 1 in Earth Sciences & Geology

2006-09-15 08:55:04 · 8 answers · asked by june2@sbcglobal.net 1 in Other - Science

I have heard that mass is a tensor in some applications of physics?
How true is this and how do we visualise mass as a tensor?

2006-09-15 08:52:41 · 3 answers · asked by A 4 in Physics

2006-09-15 08:52:15 · 1 answers · asked by Ejsenstejn 2 in Mathematics

2006-09-15 08:48:07 · 27 answers · asked by Anonymous in Other - Science

I am taking an introductory drafting course and need to know if I am reading the scale correctly.

2006-09-15 08:43:22 · 8 answers · asked by Ana M 2 in Engineering

2006-09-15 08:38:45 · 4 answers · asked by seth m 1 in Biology

One doctor told me that 145 was the cut off for normal and he wasnt going to worry about 3 points.

2006-09-15 08:33:09 · 20 answers · asked by Anonymous in Medicine

2006-09-15 08:32:46 · 6 answers · asked by Avis R. Taylor 1 in Biology

I was told by my math teacher that there were 2 greek matematicians that found an easy way to solve an equation with 2 variables, with the assumption that all the variables are whole numbers. Does anyone know their names, or anything about it??

2006-09-15 08:32:37 · 6 answers · asked by duncan 1 in Mathematics

This is not meant to be racist & I'm sorry if anyone interprets it that way. I am a biology major and I'm fascinated by people's migration & the effect of the sun on different races, how people have adapted to different weather conditions, etc. & considering writing my thesis on this. Also my girlfriend is Jewish!

I'm wondering if the reason why so many American and other Jews have very light skin that doesn't look very Middle Eastern or Mediterranean at all is because their DNA is overwhelmingly European, perhaps Eastern European or Russian?

Or do some people in the Middle East naturally have fair skin (for example if the Jews had never left the Middle East).

2006-09-15 08:32:24 · 7 answers · asked by Anonymous in Biology

A couple of times i have fallen down while walking. I was NOT drinking. Could this be a sign of Multiple Sclerosi.

2006-09-15 08:32:17 · 6 answers · asked by Anonymous in Medicine

A machine that will generate power from... Nothing. Does anybody know of one that does work. I have read about them before in a magazine but that was years ago...

2006-09-15 08:31:22 · 6 answers · asked by D@nny boy 2 in Physics

I have a power source that supplies 1.5V at 0.1A.
I want to change the current to 0.3A (without changing the voltage). Is this possible by connecting a resistor in parallel?

2006-09-15 08:30:25 · 6 answers · asked by Anonymous in Engineering

Yes, this is crazy. I am extremely overly attracted to my family doctor. We are both married. He is 15 years older than me. I think what started it is that he took an interest in my lack of sexual fullfillment in my relationship and made some suggestions which unfortunately made me think of him when I tried them out and now he's all I fantasize about...almost obsessively. He has no idea how I feel and I'm not planning on telling him but it's driving me crazy! I caught him totally checking my backside out when I had my back turned and could see him in the mirror. I don't think I am crazy when I say I feel some degree of pheromone activity going on between us. How can I move past this. He's really the best doctor I've ever had.

2006-09-15 08:30:24 · 9 answers · asked by Anonymous in Medicine

2006-09-15 08:23:36 · 10 answers · asked by UseAnotherNickname 1 in Biology

2006-09-15 08:21:19 · 17 answers · asked by Anonymous in Weather

2006-09-15 08:16:29 · 5 answers · asked by AJiwani007 1 in Zoology

The question is :
given the circle X2+y2+4x-6y+12=0. Find the coordinates of its center (h,k) and its radius r.

2006-09-15 08:16:28 · 5 answers · asked by ER88 1 in Mathematics

Let's say I use 1 gallon of gas everyday when going to work.
I work 8 hrs a day/40 hrs a week
I pass a gas station everyday. The gas is 2.50/gal
The price is definately dropping at a rate of 5 cents a day.
Will I save more money if I wait for 2 weeks and then refill, or if I replace the gallon each day I work?
How much total will I spend either way?

2006-09-15 08:16:23 · 5 answers · asked by tyron01 2 in Mathematics

5x^2+8x-2=0

and 15-6x-2x^2=0

2006-09-15 08:12:09 · 7 answers · asked by Anonymous in Mathematics

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