Science & Mathematics - 13 December 2007

Click on the link below to see the video

http://www.youtube.com/watch?v=hPTxemolxB4

2007-12-13 02:48:37 · 7 answers · asked by Anonymous in Physics

2007-12-13 02:45:26 · 21 answers · asked by Anonymous in Other - Science

A)Ca
B)S
C)O
and show how you got it.

2007-12-13 02:44:31 · 2 answers · asked by poisidan 1 in Chemistry

from my own little investigation i think it does but i have been told it is not true and can be affected by piping, true or not?

2007-12-13 02:43:58 · 26 answers · asked by little_duck04 2 in Earth Sciences & Geology

A) a piece of zinc is dropped into a solution of silver nitrate.
B)Sulfuric acid solution is reacted with sodium hydroxide solution.

2007-12-13 02:43:22 · 3 answers · asked by poisidan 1 in Chemistry

As a teacher of AP biology, I know that biological evolution happens. I know that many biologists call the terms "microevolution" and "macroevolution" an artificial distinction. I agree. However, the terms are used in both the textbook I issued to my students (Solomon, Berg, and Martin's "Biology" 7th ed) and in the CliffsAP Biology study book that I have.

Solomon, Berg, and Martin describe microevolution as a shift in allele frequencies within a population (not within a species, although that would be a natural consequence, wouldn't it?) They define macroevolution as large-scale changes that result in the formation of new species, genera, families, etc.

The CliffsAP book says that microevolution includes speciation, and that macroevolution describes patterns of change in groups of related species over broad periods of geologic time.

The CliffsAP book is geared toward AP students, but most other sources have speciation as part of macroevolution. How do I approach this?

2007-12-13 02:42:18 · 3 answers · asked by Lucas C 7 in Biology

(spt heat water=1.00cal/gc(the formula used if its Q m delta t

2007-12-13 02:41:25 · 2 answers · asked by poisidan 1 in Chemistry

What is the large rating in MCCB ( Moulded Case Circuit Breaker ) And in MCB ( Miniature Circuit Breaker )?
and what is the small rating in ACB ( Air Circuit Breaker )?

2007-12-13 02:41:01 · 3 answers · asked by AtheelKK 1 in Engineering

i missed 2 days of school and now i dont understand the homework i need to 'teach myself'. it has to do with proving cofunction relationships:
First of all, it says in an example on my handout that

sin ( pi / 2 + theta) = [ (a) / (root of all (a^2 + b^2)) ]
and that
cos theta = [ (a) / (root of all (a^2 + b^2)) ]
??? there's a diagram illustrating this on my sheet, with 2 right angle triangles in the first and second quadrants...?
and secondly (the actual question im stuck on...)
it says that using;
the following information, i need to derive a relationship for each of the following and then prove the relationship???

(a) csc (3/2 pi - theta) (b) sec (3/2 pi - theta)
(c) cot (3/2 pi - theta)

i dont understand any of this...so confusing to me...can anyone help please??

(btw if this helps, it says use the relationship in the previous question to answer this, and the prev. question was
sin (270 degrees - theta) / - cos theta

thank you!!!!

2007-12-13 02:37:44 · 2 answers · asked by Anonymous in Mathematics

I'm trying to find research for my science fair project and i need help.
Any informatin would be great
THe projects on how music effects animals (mostley house pets)
Wild animals are fine too
It has to be five pages long and i'm writing three pages on house pets and two pages on wild animals
please help

2007-12-13 02:37:34 · 4 answers · asked by kiyajo 2 in Zoology

2007-12-13 02:36:41 · 6 answers · asked by Anonymous in Mathematics

If I walk around with my Laptop, 3G Mobile Phone, Sat-Nav, Ipod and digital watch - how does the processing power of what I am carrying compare to what NASA had in the 60's? Could I get to the moon on it?

2007-12-13 02:34:57 · 4 answers · asked by DjRobin69 2 in Engineering

Hello! I am a strong believer in the mythical and paranormal, but haven't seen too much. Nothing paranormal, anyway. does anyone have any pictures of something mythological or paranormal? Mythological especially. I have seen a lot of paranormal pictures, but so far, nothing having to do with mythological stuff. Help me out please?

2007-12-13 02:34:40 · 4 answers · asked by dragongirl_93 2 in Other - Alternative

What is the advantages of using Ringer solution for the preperation of dilutions as opposed to water or a growth medium?

2007-12-13 02:30:43 · 3 answers · asked by Anonymous in Chemistry

Cloning doesn't hurt the animals does it???

2007-12-13 02:28:29 · 6 answers · asked by polluxgirl14 2 in Biology

In power transformers some times I see an oil storage tank above it but not all transformer !!

Question:

1- What the important of that storage tank?
2- When the transformer needs to use it ? and when never need it?

2007-12-13 02:25:28 · 4 answers · asked by AtheelKK 1 in Engineering

Lim x-->2- (x approaches 2 from the left) 2x-4/x-2

What if the limit of the numerator and denominator is both 0?

2007-12-13 02:24:31 · 4 answers · asked by Anonymous in Mathematics

for example a biological father and his family

2007-12-13 02:23:59 · 5 answers · asked by strimnal2000 1 in Biology

2007-12-13 02:23:17 · 6 answers · asked by Anonymous in Biology

i told a friend that i could see orions belt, originally from the UK im now in SA and thought for some reason i was seeing it upside down, myself and my friend discussed and could come to no conclusion, so am i still seeing similar sky where i am as i did back home?

2007-12-13 02:22:31 · 18 answers · asked by little_duck04 2 in Astronomy & Space

2007-12-13 02:21:18 · 10 answers · asked by confuscious 4 in Other - Science

2007-12-13 02:19:44 · 6 answers · asked by Anonymous in Other - Science

I'm working on Advanced functions and linear rational funtion. Whats the differnee between a closed and open bracket when stating domain?

2007-12-13 02:11:37 · 3 answers · asked by myname_isalbert 1 in Mathematics

Two of the factors of f(x)=2x^4 - 3x^3 - 7x^2 -8x + 6 are (2x-1) and (x-3). Find another factor. How did do I do this problem?

2007-12-13 02:08:07 · 3 answers · asked by Anonymous in Mathematics

-15 + 6a= 5a -32

2007-12-13 02:04:16 · 8 answers · asked by Anonymous in Mathematics

thank you very much

2007-12-13 02:01:58 · 9 answers · asked by Anonymous in Mathematics

of a building has an angle of elevation of 65 . If the angle of elevation to the top of the building is 50^degree, How tall is the building?

2007-12-13 02:01:19 · 3 answers · asked by Success 1 in Mathematics

The same "scientist" who hoaxed human cloning, now says that he has genetically engineered cats that glow in the dark when exposed to ultraviolet light.

Render unto me a friggin break!

I've got psychedelic posters at home that do the same thing!

What do you think?

http://news.yahoo.com/s/afp/20071212/sc_afp/healthscienceskoreacloning

2007-12-13 02:00:26 · 7 answers · asked by ? 7 in Biology

I am taking a professional exam tomorrow. Last night I had a dream I passed it. Is this a premonition or precognition? Am I seeing the future? Does this mean I don't have to study tonight and can drink beer instead?

2007-12-13 01:59:08 · 14 answers · asked by Peter D 7 in Paranormal Phenomena

when i take a picture of the moon it looks huge but wonce it has been developed it looks really small. Any ideas why?

2007-12-13 01:45:44 · 19 answers · asked by tad_pole99 1 in Astronomy & Space