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Science & Mathematics - 19 January 2007

[Selected]: All categories Science & Mathematics

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

Is there a good website for learning? How did YOU learn to program PLCs? What functions did you find ost useful?
thanks!!

2007-01-19 05:13:17 · 5 answers · asked by mike c 5 in Engineering

the answer is pretty easy

2007-01-19 05:13:01 · 14 answers · asked by ramerateens 1 in Mathematics

they no longer are able to communicate?

2007-01-19 05:12:29 · 3 answers · asked by Fun2010 4 in Medicine

I called my electric company and they have no idea about this product.

The Power-Save 1200™ was designed with the homeowner in mind, providing lower energy bills, increased motor and appliance life, as well as surge and lightning protection for all of the equipment inside of your house.

Residential customers throughout the United States and Canada see a realized savings of 8% - 10% minimum and as much as 25% on their electrical usage (and thus power bills). All Power-Save products are backed by a warranty for surge and lighting

2007-01-19 05:11:24 · 2 answers · asked by david_cu_norman 1 in Engineering

What can I do??? I wont to do something like become a zoologist or working at a zoo. Does anyone have any suggestions??? **I would like to work close with all kinds of animals, even sea animals. What should I study???

2007-01-19 05:09:24 · 7 answers · asked by cscmonkeefan 2 in Zoology

Can anyone inform me of the rules regarding significant figures in chemistry? Specifically, if you add/subtract/multiply/divide 2 or more numbers together and all have different amounts of sig figs, how many sig figs should be in the answer?

Thank you!

2007-01-19 05:05:55 · 3 answers · asked by Anonymous in Mathematics

2007-01-19 05:04:07 · 0 answers · asked by rajiv 1 in Chemistry

2007-01-19 05:03:14 · 8 answers · asked by Radhavenkatesh R 1 in Zoology

2007-01-19 05:01:57 · 5 answers · asked by odire 1 in Mathematics

i the hollywood films and series we see space travel and intergalastic travels. But how can we communicate with other stations which are light-years appart without much delay while any kind of radiation can have atmost the speed of light?

2007-01-19 05:01:23 · 11 answers · asked by Aaron J 1 in Physics

Okidoki.
For this question we shall be working in GB £'s
Here goes:

3 friends meet at a road. They each have £10 in their pocket.
At the junction of the road, they see a Car Dealers with a car on display, for sale, very cheap at £30.
They decide to buy it and put their money together.
They see the Sales Assistant to buy it and he takes their money and goes to get the keys.
As he retrieves them the Manager calls to him and informs him that the £30 car should now be sold at £25.
The assistant returns to the 3 men and tells them the car has a discount and gives each man £1 change. The other £2 (from the £5 reduction) goes in the assistants pocket as his 'cut'.
Now, the men have had £1 change, so as they started with £10, they have actually paid £9 each.
This is straightforward until you look a little closer.
3 men pay £9 each for a car. That means the car cost £27 (3 X 9 = 27).
The assistant kept £2 of the total making £29. (27 + 2 = 29)

WHO HAS THE MISSING £1.....?

2007-01-19 04:55:37 · 16 answers · asked by Anonymous in Mathematics

I am doing a science project and I cant seem to find this information on any search engines -- i have to describe the biology that lead to the development of genetically modified foods a straight answer would be much appreciated or if you have any website suggestions that would be great too. thnks alot!!

2007-01-19 04:55:30 · 3 answers · asked by Anonymous in Biology

most weaving is done where the yarns cross each other perpendicularly, but im wondering if it is possible to also weave diagonally at the same time.

2007-01-19 04:53:45 · 5 answers · asked by lellybug 1 in Other - Alternative

2007-01-19 04:52:56 · 4 answers · asked by pkbrauer 1 in Mathematics

E. MULTIPLE GENES
9. In cocker spaniels, the following genotypes and phenotypes are found: ("_" means the allele is absent. See ABO blood groups for an example.)
AABB = white, A_bb = red, aabb = lemon, A_B_ = black and aaB_ = liver.
What proportion of these offspring would be expected to be black?

2007-01-19 04:51:30 · 2 answers · asked by pmggroupe 1 in Biology

More specifically, I need temperatures for October 15, 2006-October 31, 2006.

2007-01-19 04:50:47 · 2 answers · asked by Anonymous in Weather

A professor of mathematics sent a fax to his wife. It read:

"Dear wife, You must realize that you are 54 years old and I have certain needs which you are no longer able to satisfy. I am otherwise happy with you as a wife, and I sincerely hope you will not be hurt or offended to learn that by the time you receive this letter, I will be at the Grand Hotel with my 18-year-old teaching assistant. I'll be home before midnight. - Your Husband"

When he arrived at the hotel, there was a faxed letter waiting for him that read as follows:

"Dear Husband. You too are 54 years old, and by the time you receive this, I will be at the Breakwater Hotel with the 18-year-old pool boy. Being the brilliant mathematician that you are, you can easily appreciate the fact that 18 goes into 54 a lot more times than 54 goes into 18. Don't wait up."

2007-01-19 04:49:43 · 11 answers · asked by ~ 3 in Mathematics

how do you calculate this problem?

volume=4/3pi r3 use 3.14 for pi

diameter is 4.2 mass is 18.6

2007-01-19 04:48:55 · 7 answers · asked by missy 1 in Physics

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