Science & Mathematics - 10 November 2006

2006-11-10 07:08:16 · 2 answers · asked by junior b 1 in Mathematics

Average daily balance is $500 and std dev. is $125, I want to know how to calculate customers with balances in the highest 8%.

2006-11-10 07:05:25 · 2 answers · asked by depressed 1 in Mathematics

I need to dissolve a large crystal of CuSO4 in water as quickly as possible. What three things could you do to make the reaction occur rapidly.

A.

B.

C.

2006-11-10 07:02:40 · 6 answers · asked by cetinnovations 1 in Botany

I live in Wisconsin, and right now it it snowing and thundering AT THE SAME TIME. How is this possible?

2006-11-10 07:01:56 · 5 answers · asked by Anonymous in Weather

Often wondered what it is, but i believe its still red. Do highlight any other notable situations where it isnt!

2006-11-10 07:00:57 · 7 answers · asked by premiumcarrot 2 in Biology

As we all know, some inventions and scientific discoveries have been done by scientists since the time of our civilization. Some inventions such as airplane, IC, transistor, radar, computers and laser were great and the highest level ones. How long ( years )approximately did they take to finally develop such great things after the date their creative sparks began in their minds? What do you think? I know that they vary on the situation may be 10 years or 20 years. I just want to know average years they took for these inventions. Could you help me?

2006-11-10 06:56:55 · 2 answers · asked by little rabbit 1 in Engineering

i have to do a project Adopt-An-Element
my element is ZINC # 30
here what we need to have
COST:........ for
Element belong to an.......family
Origin of Name:.........
Interesting Info: may include important uses, interesting fatz, common compounds, etc.
Discovery & Date:..........

If you guys have any website about the element ZINC please tell me
THANK YOU VERY MUCH

2006-11-10 06:56:47 · 1 answers · asked by Anonymous in Chemistry

I am trying a lapping technique for the first time, and I don't want to buy the suppliers special "blotting paper storage notebook" until I know the films will work. I have not found blotting paper in my local stores. Is there a low-cost alternative that you use? And, how durable are lapping films compared to polishing cloths, in your experience? Thanks, in advance.

2006-11-10 06:51:52 · 1 answers · asked by CO 1 in Other - Science

Graphing linear equation with 3 variables?
Ok I'm stumped on how to graph this.
Here is the problem.
120s+150m174L=36000
30s+36m+48L=9000
4s+4m+4L=1000
I have solved for the variables and gotten
s=125
m=83.333
L=41.666
Any idea of how I would go about graphing this?
The s,m,and L are all quantities of cots sold and the the final is the number of parts available. 36000 is tubing, 9000 is canvas, and 1000 is connectors.
Thanks for any help,
Scott

2006-11-10 06:50:13 · 3 answers · asked by swierzycki 2 in Mathematics

2006-11-10 06:49:22 · 3 answers · asked by Diana 1 in Chemistry

Sumerian text explains where Nibiru is: Planet Marduk
Upon its appearance: Mercury.Rising 30 degrees of the celestial arc: Jupiter. When standing in the place of the celestial battle:
Nibiru These instructions for observing the incoming planet clearly refer to its progression from an alignment with Mercury to an alignment with Jupiter by rising 30 degrees.

This could happen only if the orbit of Nibiru/Marduk is inclined 30 degrees to the ecliptic. Appearing 30 degrees above the ecliptic and disappearing (to a viewer in Mesopotamia) 30 degrees below it, creates the "Way of Anu", which forms a band extending 30 degrees above and below the equator. The thirtieth parallel north, was a "sacred" line along which the spaceport in the Sinai peninsula, the great pyramids of Giza, ad the gaze of the Sphinx were located. It seems plausible that the alignment had to do with Nibiru's position, 30 degrees in the northern skies, as it reached the perihelion in its orbit.

Is this Possible?

2006-11-10 06:46:59 · 5 answers · asked by Ophiuchus 3 in Astronomy & Space

In our chemistry lab we've been observing this eraser inside a bottle hanging from a pencil. (decription of the model) There is water inside the bottle and the eraser is tied with a rope hangin from a pencil. The more we observed everyday .. the more salts we see at the bottom of the bottle and also more on the rope and pencil. however there is no salt on the eraser that's been in water for almost 11 weeks now. Why is there more salt at the bottom of the bottle, rope, and pencil but none on the eraser?

2006-11-10 06:43:27 · 2 answers · asked by mizz ADOHRable 1 in Chemistry

Does anyone know in which countries the Chimpanzee lives in and how many?
because i've been searching all day and no results.
please help.
Thanks,
No smart Allek remarks please
♥

2006-11-10 06:41:45 · 3 answers · asked by McKenzie 2 in Zoology

2006-11-10 06:41:27 · 1 answers · asked by His 5 in Chemistry

2006-11-10 06:39:26 · 4 answers · asked by Carla 4 in Zoology

How can I solve matematically log(x)+3x=5

Thank you in advance

2006-11-10 06:34:54 · 5 answers · asked by Beste bat 1 in Mathematics

The mass of water needed to fill a different flask is 183.07 g. The density of water at 0.99754. If the temperature is 23.0 deg. C, what is the volume of the flask in liters?
please explain

2006-11-10 06:34:09 · 2 answers · asked by smile 1 in Chemistry

Back when the continents were formed, they became what we now see and know!. Now, if an earthquake at 10.5 or higher, began at the tip of North America, and add all the volcanoes erupting along the way with the fault lines working together, and the earth's plates shifting back & forth, with those lines opening up as the line makes its way down the middle of No.America to the Gulf of Mexico. If all this was to cause the continents to reverse back to the way they were before they formed, what would life as we know it, be like? Could such a thing actually happen? Even in the last days of mankind on earth? Scary thought, isn't it?

2006-11-10 06:32:48 · 2 answers · asked by ZORRO 3 in Earth Sciences & Geology

please.. please... nobody experiment before answering!

Question is based on a scene I saw in a movie. Guy drops a cig in a car's gas tank and it explodes. I started thinking Nahhhh... needs a spark or an open flame to make that happen

2006-11-10 06:32:33 · 19 answers · asked by Anonymous in Chemistry

2006-11-10 06:31:33 · 3 answers · asked by サンダース 2 in Mathematics

The air is 78.0% nitrogen and 22.0% oxygen (by number of moles).
Pressure = 1.030 atm
Temp = 21.8 deg. C
Volume = 1.020 L

R = 0.0821 L*atm/mol*K
N = 14.01 g/mol
O = 16.00 g/mol
How many moles of gas are there in the flask?
How many moles of nitrogen gas are there?
How many moles of oxygen gas are there?
What is the overall density of the air?
What is the mass of air in the flask?
please explain

2006-11-10 06:31:01 · 1 answers · asked by smile 1 in Chemistry

Oxidation numbers!?
Hi i just need someone to write down and explain what the oxidation number is of H2SO4 - how would you work out Hydrogen's number, Sulphurs number and oxygen's number?

Please explain as thoroughly as possible!

Thanks

Harry

2006-11-10 06:28:25 · 2 answers · asked by Anonymous in Chemistry

THAT a year cannot be a year? thanks.

2006-11-10 06:28:05 · 10 answers · asked by Anonymous in Astronomy & Space

From my limited uderstanding, we can use magnetism to move trains really fast here on earth.
what if we took that train, put it in space, and instead of it riding on a rail on the base,
the train is enclosed in a tube (like in a particle accelerator) made of electromagnets
placed together to form rings with the train pulled from the front and repulsed from the rear
accelerating in a circle and with the magnets on the ring redistributing the the force of the
magnets on the train as it turns, compensating for the trains outward motion, and then shot out through a
linear section of the tube. the question is, by eliminating gravity and friction from air,
how fast is fast and if this is a plausible concept, could we use this as a way to deliver
equipment and rations in space.
If anyone answers, i have another question relating to this.

2006-11-10 06:25:54 · 5 answers · asked by iottano 1 in Astronomy & Space

If suppose each living thing on this planet is a recieving 'device', meaning all that we see around us are nothing but signals transmitted to the 'brain' by all our senses-eyes,ear,mouth,skin,nos... So the whole world is just an image formed in our brain made by these signals. So even our brain, body everything is just an image formed in that recieving 'point'. We cannot even be sure if all of our 'past' was just fed into us at one single moment, or if it really did exist.How can we know for sure that the world really exist or if we are 'something' stationary and just that the signals are continuosly being fed into us?The dream state gives more proof for this, coz even in a dream we can feel, touch, hear, smell and see our body someplace else(a different world),which actually doesn't exist in reality!And what happens when we r in deep sleep- no senses,no world, no people-nothing!

I found this to be a bizarre concept, but couldn't find anything to prove it wrong either. What do u think

2006-11-10 06:25:15 · 4 answers · asked by ssss 3 in Other - Science

I am a writer, and I setting a story in an alternate universe that basically equates technologically with the middle ages. I'm considering having a character die of leukemia. What I am looking for, basically, is for her to sort of slowly weaken and then die in a slow drawn-out way. It'll all be very tragic for my main character.

Is this reasonable? What WOULD happen if she had leakemia and it was totally untreated? What would her early symptoms be? As it progressed unchecked? Would her physical appearance change at all? As she was dying? What would the cause of death actually be? I can't find this, because obviously we do treat these things these days.

2006-11-10 06:24:35 · 10 answers · asked by Beneficentia 3 in Medicine

can u help plz becoz dis is important ok what is 6+2x, 9+12x,15-20y,24+30a,18c-9,16f+24,3t-48,2s+8,10k-25,3(x+4)+2(3x-1),4(2y+6)-2(7+y),4(d-3)+%(3d-9)2(5+3c)-2(3-2c

2006-11-10 06:22:33 · 3 answers · asked by kerchingrudeboydog 1 in Mathematics

i just wanna kno so if could plz tell me thx!

2006-11-10 06:20:44 · 2 answers · asked by sweetcakes 1 in Earth Sciences & Geology

2006-11-10 06:18:07 · 3 answers · asked by Anonymous in Weather

What are the stabilizing factors in the hydrate of ninhydrin which causes the hydration to be attached to the center carbonyl group rather than one of the other two outside carbonyls?

2006-11-10 06:18:06 · 2 answers · asked by DanD 1 in Chemistry