Science & Mathematics - 2 October 2006

there are 10 blue stockings 20 red stockings in a drawer.

How many stockings should you take out , in the dark , to be sure of having a matching pair ?

2006-10-02 07:38:08 · 19 answers · asked by AlexGenius 2 in Mathematics

The particle starts at rest at t = 0. What is the instantaneous power delivered by the force at
t = 4.13 s? Answer in W.

2006-10-02 07:37:18 · 2 answers · asked by Dee 4 in Physics

Everyones skin contains about the same amount of melanocytes even though people are of many different colors. How is this possible? This was asked in my A&P class today, and we were all floored!
any ideas anyone?
I need an actual scientific answer, not opinions!!
Thanks all!!!

2006-10-02 07:33:19 · 5 answers · asked by Oorah Wife 3 in Biology

You go to: -

http://www.mypersonalhoroscope.com/

and supposedly the results are "WOW"

My teacher said he bought it and since he got it he has not been able to get past page 5 because it is so exact and had things that he had not told anyone

2006-10-02 07:32:24 · 5 answers · asked by Anonymous in Astronomy & Space

I have this design homework, where i have to design a biased circuit for a 2N3904 npn bipolar transistor with 5% tolerance resistors.
Here is what the circuit should look like. With a few changes, Vcc is 15V, Rc=0 ohm and the design is to give a nominal collector current of 1.2 mA. Unknown are R1, R2, RE.

http://i115.photobucket.com/albums/n288/johndoe_00/cir1.jpg

I need to design it based on worst case max and min to get a good design. Since i have to consider 4 factors ( beta,R1,R2 and Re). I also dont know what info i need of the datasheet. I need some help, i'm totally lost and confused on this problem.

2006-10-02 07:27:38 · 4 answers · asked by Anonymous in Engineering

thanks in advance

2006-10-02 07:26:34 · 4 answers · asked by chemical engineer 1 in Mathematics

2006-10-02 07:25:04 · 1 answers · asked by smashbrolover 1 in Biology

2006-10-02 07:24:35 · 2 answers · asked by T.T 2 in Chemistry

2006-10-02 07:21:22 · 17 answers · asked by slanamith 1 in Other - Science

A little confused here....
Could anyone explain, the relationship between the ability of one body (non-black) to absorve heat that is emitted by another body (non-black) and the spectrum of the emitted energy.
To make it more clear :
- one body emitts heat at a specific spectrum (at certain wavelengths) depending on the surface temperature. Can this spectrum be shifted or concetrated in a small band at a specific wavelength value?
- the ability of another body to absorb energy, can be characterised by specific wavelength ? E.g. is it correct to say, that a specific body absorbs (the most) at a specific wavelengh?

Thanks in advance.

2006-10-02 07:19:53 · 3 answers · asked by Aiadas 1 in Physics

I'm a member of the Mad and Unstable Scientists Asociation, and I have to present a new World Destruction device by tomorrow. People that inhabbit this world, help me with ideas.

2006-10-02 07:17:47 · 6 answers · asked by The Dutch 3 in Other - Science

1) nitrogen (1V) oxide
2) ferrous bromide
3) magnesium sulfide
4) ammonia
5) ammonium sulfate
6) chromium (111) carbonate

2006-10-02 07:16:56 · 1 answers · asked by Anonymous in Chemistry

2006-10-02 07:11:57 · 4 answers · asked by ANDREW G 1 in Earth Sciences & Geology

According to Kepler’s Third Law, the sidereal period, in years, of a planet squared is equal to its semi-major axis, in Astronomical Units, cubed. Which statement is true in the context of this law?

a. A planet that has a greater mass takes more time to orbit the Sun.
b. A planet that has a larger semi-major axis takes more time to orbit the Sun.
c. A planet that has a greater size takes more time to orbit the Sun.
d. A planet that has a larger semi-major axis takes less time to orbit the Sun.
e. A planet that has a longer solar day is farther from the Sun.


Is the answer to this question B?????

Thank you

2006-10-02 07:11:08 · 5 answers · asked by Roman K 2 in Astronomy & Space

2006-10-02 07:10:59 · 1 answers · asked by T.T 2 in Chemistry

2006-10-02 07:10:34 · 7 answers · asked by lost 1 in Chemistry

x - y + 5z =1
6y - 16z = 28
x + 3y + 2z = 5

Do I just insert a 0 for the missing x? And can you please solve the matrice because i keep trying it and I fail it.

2006-10-02 07:05:56 · 4 answers · asked by Anonymous in Mathematics

What is the mass of fuel in kilograms when the tank is full?

2006-10-02 06:59:43 · 2 answers · asked by edtheman25 1 in Chemistry

i have been given a puzzle cube (4x4x4) which is meant to be composed from various differently shaped pieces of mainly five units each, similar to tetris shapes. I was wondering if there is a better way than trial and error of making the larger cube. Also, i was wondering if there was more than one way of doing it, other than the various rotations of the same solution.

2006-10-02 06:58:19 · 4 answers · asked by Anonymous in Mathematics

2006-10-02 06:58:18 · 1 answers · asked by orkenizer 1 in Mathematics

2006-10-02 06:55:32 · 19 answers · asked by Philipp P 1 in Earth Sciences & Geology

2006-10-02 06:55:08 · 4 answers · asked by Anonymous in Mathematics

Simple little experiment: if you were to set up the apparatus to electrolyse sodium hydroxide, what will be:
1 - Formed at the positive electrode?
2 - Formed at the negative electrode?
3 - The resulting solution?

I know this question should be rather easy, it's just been a while since I've done much in the way of chemicals!

2006-10-02 06:52:44 · 2 answers · asked by Rich 5 in Chemistry

i am doing a debate at school - why are the kidneys the most important organ in the body

2006-10-02 06:52:30 · 24 answers · asked by mouse 3 in Biology

2006-10-02 06:50:02 · 2 answers · asked by arieshay 1 in Chemistry

2006-10-02 06:47:05 · 3 answers · asked by nube 3 in Physics

It happened during the war between the Kuwaitis and the Iraquis.

2006-10-02 06:45:33 · 5 answers · asked by arieshay 1 in Other - Science

As we all know that there are 64 sq in a chess board ,if i place one penny in the first one and double of it in the second one and double in the third how much would i need in the 64 square...???1...2...4....8.....16....32......

2006-10-02 06:42:06 · 16 answers · asked by S S 1 in Mathematics

Question is..Hydrogen bonds can form between___ adjacent to each other. (a.) two hydrogen atoms (b.) two Oxygen atoms, (c) a hydrogen and an Oxygen atom or (d) negative charges

2006-10-02 06:40:03 · 3 answers · asked by yessireee 3 in Chemistry

Does the force of the throw affect an eggs splatter?
need information or websites for research

2006-10-02 06:39:22 · 4 answers · asked by look at that smexy piggy 1 in Physics