Science & Mathematics - 29 November 2007

2007-11-29 12:01:15 · 4 answers · asked by volleybgrl23 2 in Biology

2007-11-29 12:01:04 · 2 answers · asked by dearestelle 1 in Biology

2007-11-29 11:59:16 · 3 answers · asked by ez2confuze 2 in Earth Sciences & Geology

1. Write the equation y= -(x+7)(x+3) in:
A)vertex form
B)factored Form

2007-11-29 11:58:17 · 2 answers · asked by Anonymous in Mathematics

What elements are in these groups?

Transition Metals:

Metals:

Rare Earth Elements:

Lanthanoin Series:

Actinoid Series:

Nonmetals:

Ten points to the first one whose correct!

2007-11-29 11:57:32 · 2 answers · asked by Kriss 2 in Chemistry

2007-11-29 11:56:59 · 6 answers · asked by Oh em gee. It's me. 2 in Zoology

I did this experiment in class. It was a simple experiment. My teacher had a wooden ramp leaning up against the wall. He had a wooden disk and a metal ring. By ring, I mean it had no inside, just like a ring. By disk, I mean it had an inside to it. Both the wooden disk and the metal ring had the same mass, same diameter, same size and same shape. They were released down the ramp at the same time and the wooden disk always made it down first. My question...Why does the disk always beat the ring? Explain and show a mathematical proof why.

I really have no idea as to why except that there must be a force acting on them?!? I have no clue where to start on the mathematical proof....can someone please help me asap? Thank you tons if you can help.

2007-11-29 11:56:56 · 2 answers · asked by ☺♠JonasJay♫♦ 5 in Physics

The spectral line of hydrogen producing the quasar absorption lines in most studies has a laboratory wavelength of 122 nm. If a hydrogen cloud is at a distance of 1 billion light-years,
a. use Hubble's Law to find the recession velocity of this cloud.
b. What is the redshift of the cloud?
c. At what wavelength will the absorption occur?

2007-11-29 11:56:08 · 1 answers · asked by Anonymous in Astronomy & Space

2007-11-29 11:55:51 · 5 answers · asked by Nakeshia H 1 in Chemistry

2007-11-29 11:55:50 · 4 answers · asked by Stephen W 2 in Engineering

2007-11-29 11:53:07 · 4 answers · asked by mamanoelia 3 in Physics

If honesty can get you killed, why is it asked for? For instance, in the animal kingdom, when an animal plays dead, it is deceiving the predator, and lives on to reproduce. Why is this wrong? And if it is right, why is it wrong when humans deceive?

2007-11-29 11:52:52 · 5 answers · asked by Anonymous in Biology

only answer if your going to help alright? i need to have a physical map that shows.. 1. Atlantic Coastal Plain
2. Great Plains
3. Appalachian Mtns
4. Rocky Mtns.
5. Sierra Nevada Mtns.
6. Cascade Ranges
7. Coastal Ranges
8. Pacific Ocean
9. Atlantic Ocean
10. Gulf of Mexico
11. All of the Great lakes (Huron, Superior, Erie, Michigan & Ontario)
12. Colorado River
13. Mississippi River,
14. Ohio River
15. Missouri River
16. Rio Grande River
17. Grand Canyon
18. Mojave Desert

not drawn from the internet would be fine! pleas help alright! thanks !

2007-11-29 11:52:28 · 4 answers · asked by Anonymous in Geography

2007-11-29 11:52:05 · 25 answers · asked by Lea 1 in Mathematics

a reactive element? or is it non-reactive?

2007-11-29 11:50:33 · 2 answers · asked by Ari L 2 in Chemistry

when solving for y, i need help with 2(y+5)=4x. i believe the answer is y=2x-5. can someone help?

2007-11-29 11:49:06 · 9 answers · asked by Anonymous in Mathematics

2007-11-29 11:48:56 · 5 answers · asked by mamanoelia 3 in Astronomy & Space

I have to do this reseach project for my chemistry class, and I'm having a tough time trying to pick on element. Any suggestions,, you can suggest more than one too. Thanks so much.

2007-11-29 11:48:05 · 2 answers · asked by Dana M. 3 in Chemistry

2007-11-29 11:47:20 · 3 answers · asked by Anonymous in Mathematics

Compare and contrast the methods of solving systems of linear equations

2007-11-29 11:45:13 · 1 answers · asked by Anonymous in Mathematics

Like interesting facts and things

2007-11-29 11:43:14 · 2 answers · asked by Anonymous in Chemistry

2007-11-29 11:42:51 · 5 answers · asked by mamanoelia 3 in Astronomy & Space

A cylindrical waste container with no top, a diameter of at least 2 feet, and a volume of 26cubic feet to be constructed. What should its radius be under conditions?
a.65 square feet of the material will be used to construct it ?
b.the smallest possible amount of the material will be used to construct it (how much material is needed?)
the answers are
a. r = 4.09977
b. r = 1.996; 37.566in^2

2007-11-29 11:38:59 · 3 answers · asked by Anonymous in Mathematics

The bees around our town are going nuts! They are flying around in circles and making hives in the trashcans at our school. They have invaded our campus. And they dont seem to be stinging, but they are trying to fly in peoples faces and land on us. Why are they suddenly going coo-koo!

2007-11-29 11:36:05 · 3 answers · asked by shelly 4 in Zoology

Your friend claims that he has ESP. In order to prove his claim to you, he is going to have your write the names of ten of your friends on slips of paper and put one name into each of 10 sealed envelopes. You will invite the 10 friends to your house and your friend with ESP will distribute the envelopes using his ESP powers.

Here is the question: How many people have to receive their own name before you believe that your friend has ESP and isn't just randomly giving out the envelopes?

To answer the question you will first need to simulate randomly giving envelopes with names to 10 people to see what the distribution of correct names under random distribution looks like. You must do as many simulations as you need to be sure about the distribution. You must also be clear about how you did the simulation and what the results were.

Next you will have to choose an alpha level for your test of ESP. How many of your friends must get their own names in the envelope before your ESP friend has performed that much better than random?

2007-11-29 11:33:30 · 1 answers · asked by Anonymous in Mathematics

is a fly known as a animal?

2007-11-29 11:33:20 · 6 answers · asked by Anonymous in Zoology

I have seen spiders in very thick webs just scooting through with no problem. Today I took a big web and tried ot net the spider, to no avail. WHAT'S THE SECRET?

2007-11-29 11:31:31 · 6 answers · asked by MR. T. 6 in Other - Science

please please help me. my math teacher gives us like really hard questions every week. i need help :(

2007-11-29 11:31:25 · 6 answers · asked by Anonymous in Mathematics

using the bathroom? at all , I know they don't, I watched a program on this.

2007-11-29 11:28:58 · 3 answers · asked by Anonymous in Zoology

It's for my science project. I am writing a sci-fi story, but it needs to be based off of true facts, and a real exploration! I have already written the stroy so I don't want to rewrite it! HELP!


So, I need the name of a Mars exploration where they set off to try and find aliens. ASAP!

2007-11-29 11:28:36 · 7 answers · asked by lumpy17@sbcglobal.net 1 in Astronomy & Space