Science & Mathematics - 16 January 2007

i dont want +ive or -ive charges i only need its exact definition.

2007-01-16 07:31:23 · 10 answers · asked by muhammad zahid m 1 in Physics

how do i do these problems and show the work:
multiply the following numbers by moving the decimal:
1. 0.08 x 10=
2. 5.65 x 100=

2007-01-16 07:29:30 · 8 answers · asked by baby13 1 in Mathematics

I Need To Solve This Equation...

(You Can Only Use Each Sign ONCE, And You Are Aloud To Use Brackets)

Plus, Minus, Divide, Multiply (Have To Use All Four - And Only Once!!)

7 (?) 5 (?) 4 (?) 7 (?) 6 = Fifteen

I Got The Right Answer - But, That Was With Using The Same Sign Three Times...

Thank You!!

2007-01-16 07:29:13 · 7 answers · asked by *Hilary_Duff_Honey* 2 in Mathematics

2007-01-16 07:25:01 · 3 answers · asked by Anonymous in Mathematics

you are dealt 5 cards in a game of draw poker, and 3 of them are 5's what is the probability you will get another 5 if you draw 2 cards?

2/47
2/49
1/6
2/13


Answers please!

2007-01-16 07:24:34 · 6 answers · asked by Anonymous in Mathematics

Let a, b , and c be 3 distinct positive numbers. What can be said about the difference between the mean and the median of the three numbers?

1. It is always positive or zero.
2. It is less than one-third of the difference between the largest and smallest of the numbers.
3. It is always negative or zero.
4. none of the above.

2007-01-16 07:23:04 · 4 answers · asked by Anonymous in Mathematics

solve

2007-01-16 07:20:50 · 3 answers · asked by Anonymous in Mathematics

yeh...er....i need like....LOADSA INFO! please do this and i will give you prase and love you forever and ever...:)

2007-01-16 07:19:19 · 4 answers · asked by Marianne C 1 in Physics

My mum threw this comment at me the other day and im wondering if there is any truth to it

2007-01-16 07:17:49 · 13 answers · asked by Anonymous in Weather

Considering that we have lost two space shuttles and some other near disasters with them why is it that the moon landing seems impossible. The technology back in the 60s was 1000 percent behind of what we have now. The engineering of automobiles back then was horrible and the engineering pool was also pretty limited in every aspect So how can one assume anything but hoax when the idea of a successful trip to and back to the moon seems like science fiction ..Also, why haven't we returned in nearly 40 years.

2007-01-16 07:16:25 · 23 answers · asked by superjoezzz@sbcglobal.net 3 in Astronomy & Space

1) can u solve the equation 2 cos 2θ = 4 - 5 cos θ

for values of θ between 0 degrees and 360 degrees.

note* the symbol θ is the greek symbol theta
could pls show step by step...

2) solve the equation:

5 * 4^(2x+1) - 10 * 4^x + 1 = 0

Note* could you please show step by step..

2007-01-16 07:15:38 · 3 answers · asked by SHIBZ 2 in Mathematics

2007-01-16 07:14:55 · 4 answers · asked by Anonymous in Zoology

A mathematically backed answer would be much appreciated! Please by all means use fourier to answer if you can.

Even an answer without mathematical backing would be appreciated.

2007-01-16 07:12:46 · 3 answers · asked by Matt 2 in Physics

A rigid tank of small mass contains 55.0 g of argon, initially at 230°C and 100 kPa. The tank is placed into a reservoir at 0°C and is allowed to cool to thermal equilibrium. Calculate the following:

(a) The volume of the tank
**I found to be 57.59 L, which is correct. The rest is what I need help on...

(b) the change in internal energy of the argon
I know that the change in internal energy is equal to Q-W and thet W=Qhot-Qcold, but I'm not really sure what to plug in where to get this answer.

(c) the energy transferred by heat
Not even sure where to start with this...

(d) the change in entropy of the argon
I know that the change in entropy is equal to dQ/T and that
dQ = mcdT. I'm just really not sure what to use for what-- and what the change in temperature would be. Would the Argon cool to 0*C?

(e) the change in entropy of the constant-temperature bath

2007-01-16 07:11:59 · 1 answers · asked by flossie116 4 in Physics

like sodium (v=1), and an atom having a high valence like iodine (v=7) and being stable at a negative charge. What quality on a periodic chart tells what charge an atom is stable at?

2007-01-16 07:10:48 · 1 answers · asked by Lisa 1 in Chemistry

Thomas is training his pet frog to climb up a flight of stairs. The frog can hop up only one or two steps, and can not hop down. How many different ways can the frog hop up a flight of 10 stairs? (up 1 up 2 up 1 up 2 up 1 up1 up1 up1 etc.)

WHAT IS THE METHOD OF SOLVING THIS PROBLEM??????

thanks

2007-01-16 07:05:38 · 4 answers · asked by Sean F. 1 in Mathematics

I know that wind is air and that it makes storms and tornadoes, but what is it that makes it blow and why do we need it?

2007-01-16 07:04:01 · 6 answers · asked by Anonymous in Weather

I am a student of chemistry. Please describe related to physical chemistry.

2007-01-16 07:02:37 · 8 answers · asked by ශාකුන්තල | shaakunthala 3 in Chemistry

2007-01-16 07:01:26 · 15 answers · asked by fox 1 in Astronomy & Space

What is name for solid liquid and gas? Just 1 big word. I NEED TO KNOW!!!!!
Thankyou!

2007-01-16 07:00:58 · 6 answers · asked by *Natalie.* :P 5 in Chemistry

It's been so long I think I may have forgotten. :-)

2007-01-16 06:59:47 · 2 answers · asked by Jersey Giant 4 in Weather

2007-01-16 06:59:23 · 8 answers · asked by texas_diamond_diva 1 in Mathematics

If we know that the rest mass of any particle is E = mc^2 then can somebody explain the following:

It was observed that a pion decays into a muon, and that their momentum was conserved. However their energy was NOT conserved. Thus it was hypothesized that there is another product of decay to conserve the energy. This new particle had to have zero mass for it to have no momentum - since momentum = MV. Thus they come up with the nuetrino to conserve the energy. However, since the nuetrino has no mass, how can it have energy? - Remember, E = mc^2 !! This has been puzzleing me for a while now!!! any help at all would be great.

2007-01-16 06:58:47 · 4 answers · asked by Anonymous in Physics

2007-01-16 06:58:41 · 5 answers · asked by pearls & lace 3 in Other - Science

The island of Newfoundland, a province of Canada, is in a time zone only a half hour different from the time zone west of it.

2007-01-16 06:58:20 · 3 answers · asked by cbjso 2 in Geography

2007-01-16 06:57:37 · 11 answers · asked by texas_diamond_diva 1 in Mathematics

2007-01-16 06:57:22 · 14 answers · asked by texas_diamond_diva 1 in Mathematics

2007-01-16 06:57:04 · 7 answers · asked by texas_diamond_diva 1 in Mathematics

2007-01-16 06:56:44 · 5 answers · asked by texas_diamond_diva 1 in Mathematics

2007-01-16 06:55:42 · 17 answers · asked by kay 1 in Mathematics