Science & Mathematics - 28 November 2007

this summer i found this rock up camping. it is really really lightweight and it is kinda whiteish in the middle. it has little flakes that are goldish but also kinda bronzeish. it has biotites in it like granite rocks (biotites are these little black spots) the rock crumbles very easily. can someone please help me find out what kind of rock this is!!!! im really hoping to be a petrologist when i. older so i want to learn about this rock

2007-11-28 14:59:57 · 4 answers · asked by rAwRnEsS x] 2 in Earth Sciences & Geology

why do giraffes have little knobs on there head
and why don't other animals not have them
why do they have spots

2007-11-28 14:58:51 · 4 answers · asked by Anonymous in Zoology

The windpipe of a typical whooping crane is about 5.3 feet long. What is the lowest resonant frequency of this pipe, assuming that it is closed at one end? (Assume a temperature of 32°C.)

2007-11-28 14:58:40 · 1 answers · asked by Anonymous in Engineering

????

2007-11-28 14:56:27 · 1 answers · asked by teendeviant 3 in Mathematics

i don't know how to do infinite products. the three examples i have are:

Product of: (1-1/n^2)

Product of: ( (n^3-1)/(n^3+1) )

Product of: ( 1-x^(n^2) ) where |x|<1

for the first one i have a ridiculously over complicated method similar to the Wallis product but there must be another way...

Can anyone help?
Thanks

2007-11-28 14:55:38 · 2 answers · asked by mongrel73 1 in Mathematics

of* 32ft^3, to be welded from quarter-inch plate, and weigh no more than necessary. find the dimensions.

2007-11-28 14:55:11 · 2 answers · asked by iqbalkhanayesha 2 in Mathematics

You shouldn't really bother answering this because by the timd you do I will have found the answer but it might be usefull to other kids out there who are hopeless and need the help. Thanks if you post. :)

2007-11-28 14:54:48 · 1 answers · asked by Alfalfa sprout 2 in Biology

I looked up the question on Yahoo Answers and they did not specify how many minutes it took to get that figure.

2007-11-28 14:51:26 · 1 answers · asked by alex_b_michel 1 in Mathematics

2007-11-28 14:48:52 · 3 answers · asked by kelly 1 in Earth Sciences & Geology

I need to know soon so please answer my question i'd really appreciate it. If you know any other info on gamma rays then please share.

2007-11-28 14:48:17 · 9 answers · asked by Canon 1 in Astronomy & Space

2007-11-28 14:47:16 · 6 answers · asked by Anonymous in Physics

How many ways can 81,000 be written as the sum of two positive integer squares? Prove your answer.

:)

Hint: Some of my recent prior questions.

2007-11-28 14:46:43 · 4 answers · asked by Curt Monash 7 in Mathematics

Multibillions of dollars are being spent to do space missions. Missions like Mars are finding some alternative place to live on, but before we find suitable enviornment outside earth, our own enviornment would extinct and we won't be here. So why not use those billions of dollars to fix our enviornment (finding alternatives for petroleum etc.)?

This is my position paper. I really need your opinions on the topic!!
Thanks!

2007-11-28 14:46:08 · 19 answers · asked by *sumASTRONAUT* 1 in Astronomy & Space

car on cruise control is headed for a cliff at 35m/s leaves the (horizontal) edge, and strikes the ground below at 2.3 seconds.
a. What is the horizontal displacement- the range- of the car?
b. What is the horizontal velocity of the car?
c. What is the vertical velocity of the car?

2007-11-28 14:43:29 · 1 answers · asked by Anonymous in Physics

im 12 years old in 6th grade on the brinx of failing please help me ur girl love ya i love u boy

2007-11-28 14:43:27 · 3 answers · asked by mz.soulja girl 1 in Earth Sciences & Geology

2007-11-28 14:38:53 · 3 answers · asked by lak3rz08 2 in Earth Sciences & Geology

2007-11-28 14:37:29 · 3 answers · asked by kittan_luva 1 in Medicine

like other elements, water, or air. Give me links please.

2007-11-28 14:35:11 · 1 answers · asked by Jack Lapidus 4 in Chemistry

Is it humanely possible to create a northern lights effect on a surface, much like the one effect in Balto? I know it can be done digitally, but im talking about actually making one on a hill at night or at least something to that effect

2007-11-28 14:34:53 · 4 answers · asked by yankee_hata_4ever 1 in Astronomy & Space

2007-11-28 14:32:34 · 2 answers · asked by Anonymous in Engineering

2007-11-28 14:32:23 · 6 answers · asked by Anonymous in Geography

i have a final tomorow and one of the things i need to know is:
How pure metals are obtained and calculate % metal in ore.

please explain, and a site or example will help TY

2007-11-28 14:30:43 · 1 answers · asked by mzmadel 2 in Chemistry

i have this scientific calculator casio fx 991 MS. I wanted to know how to do antilog or inverse log with this calculator. Please help.

2007-11-28 14:30:35 · 4 answers · asked by Priyanka P 1 in Mathematics

How would I figure out the calculated image distance and size when using a light source and lens? I am given the object distance and size and by using a graphical approach, I have the measured image distance and size.
Would this be correct: 1/distance of object + 1/distance of image= 1/focal point
I'm just not getting this because I get fractions and I was told to find the reciprocal. The numbers I get just doesn't make much sense.

2007-11-28 14:29:45 · 1 answers · asked by Elizabeth W 1 in Physics

Earth, Mercury, Venus, Ceres, Uranus, Ganymede, Comet Halley, Mars, Titan, Jupiter, Pluto, Moon

2007-11-28 14:27:42 · 4 answers · asked by Anonymous in Astronomy & Space

List the unique solutions to 1000 = a^2 + b^2, where a and b are positive integers. Prove that that's all of them.

Hint: Some of the questions I've asked recently.

2007-11-28 14:24:40 · 5 answers · asked by Curt Monash 7 in Mathematics

me and my husband awoke one night at the same time because of a white/blue light just above our heads it seemed to have a center . We both had the same reaction of being so tired we could only acknowledge it with a mumble to eachother and then we were asleep again .We both had no fear of it just tremendous need to fall back to sleep . Also I remember i could feel it on my face like if someone had there hand close to your face with your eyes closed. I wondered if anyone ever heard of something similar

2007-11-28 14:24:02 · 8 answers · asked by halburg 1 in Paranormal Phenomena

Prove your answer.

2007-11-28 14:22:54 · 2 answers · asked by Curt Monash 7 in Mathematics

2007-11-28 14:18:45 · 11 answers · asked by hpdancerfreak 1 in Mathematics

It is a microscopic unicellular organism observed to have the following characteristics: a food gullet, a flagellum, chloroplasts, mitochondria, and a nucleus.

2007-11-28 14:18:35 · 3 answers · asked by Jacob L 1 in Biology