Science & Mathematics - 18 November 2006

How Did the Grand Canyon Develop? what is the geological history represented there?

and one more ?

Explain the history of pure quartz sanstone?

2006-11-18 18:41:51 · 1 answers · asked by The word Fan! 1 in Earth Sciences & Geology

I was wondering about humans in particular, but most mammals have their sense organs and brains all located in a head. From an evolutionary standpoint it seems unwise to cluster so much vital anatomy together like that, but I'm sure there's a sound, scientific reason for it. I just... can't find one :\

2006-11-18 18:36:00 · 7 answers · asked by maradonxp 2 in Biology

2006-11-18 18:29:58 · 4 answers · asked by _frances mae_ 1 in Astronomy & Space

2006-11-18 18:28:47 · 19 answers · asked by Mick H 1 in Earth Sciences & Geology

2006-11-18 18:21:29 · 7 answers · asked by JAY DEE 1 in Biology

howcome its possible that the earth is so small in the whole universe and dust, meteors or any distructive object and doesn't fall on earth and completely or partially damage the surface? and incase there is something really gonna happen in the future, are we prepared for it??? if yes, what???

2006-11-18 18:17:18 · 10 answers · asked by Anonymous in Astronomy & Space

2006-11-18 18:17:01 · 5 answers · asked by me4farsi 1 in Geography

I have two rolls left ... should I roll the 1 and the extra die for an open ended straight possibility or should I just roll the extra die twice for a gutshot straight possibility?

Proving your answer with math will earn you the best answer.

2006-11-18 18:14:16 · 9 answers · asked by sab057 1 in Mathematics

2006-11-18 18:08:26 · 3 answers · asked by nerings 1 in Weather

2006-11-18 18:06:54 · 13 answers · asked by diamondg4u2c 3 in Earth Sciences & Geology

assume that just for 1 second gravity goes off and comes back, what will happen??? is it possible??? no funky answers please. genuine replies are appreciated.

2006-11-18 17:59:20 · 2 answers · asked by Anonymous in Earth Sciences & Geology

This is one question.. A sled weighing 60.0 N is pulled horizontally across snow so that the coefficient of kinetic friction between the sled and the snow is .100. A penguin weighing 70.0 N rides on the sled. If the coefficient of static friction between the penguin and the sled is .700, find the maximum horizontal force that can be exerted on the sled before the penguin begins to slide off.

2006-11-18 17:57:12 · 2 answers · asked by Anonymous in Physics

2006-11-18 17:50:46 · 5 answers · asked by haru 1 in Chemistry

2006-11-18 17:50:02 · 10 answers · asked by vexay s 1 in Geography

I have a container of 500 mL of this liquid, dunno what its used for. But yeah, anyone know?

2006-11-18 17:49:24 · 9 answers · asked by Anonymous in Medicine

2006-11-18 17:47:58 · 3 answers · asked by anusha 1 in Physics

How many wood peckers would it take to sink a wooden sail boat? How long would it take them?

2006-11-18 17:44:35 · 1 answers · asked by andrewbison 2 in Zoology

help i need to know this soon someone might have overdosed and not know it

2006-11-18 17:27:55 · 5 answers · asked by ty ty 1 in Medicine

I already tried to solve this one:

cot^4 X + cot^2X = csc^4 X - csc^2 X

I couldn't get to the answer, what I did was:

cot^2 X ( cot^2 X + 1)
cot^2 X - csc^2 X

cos^2 X csc^2 X
--------- - ---------
sin^2 X

But I can't get any further, any suggestions or ideas on how to solve this ?

2006-11-18 17:26:12 · 6 answers · asked by ddeity_inc 3 in Mathematics

2006-11-18 17:22:23 · 8 answers · asked by Anonymous in Weather

I'm having some difficulty solving this problem:

A metal storage tank with volume V is to be constructed in the shape of a right circular cylinder surmounted by a hemisphere. What dimensions will require the least amount of metal?

2006-11-18 17:21:36 · 5 answers · asked by Anonymous in Mathematics

What are the symptoms of lactic acid buildup in the mucles??

2006-11-18 17:15:18 · 6 answers · asked by dsds 1 in Chemistry

2006-11-18 17:13:22 · 4 answers · asked by elmo 1 in Biology

Assume there is no tape inside (it will be transmitted to a receiver elsewhere)

Thanks

2006-11-18 17:13:12 · 1 answers · asked by Ilooklikemyavatar..exactly 3 in Engineering

Any dimensions that you can tell me would be helpful. For example, how high, wide, deep was that civilization.

2006-11-18 17:10:23 · 2 answers · asked by elthe3rd 4 in Earth Sciences & Geology

2006-11-18 17:09:27 · 4 answers · asked by Anonymous in Geography

In February of the year 2000, my brother Ethan was eleven times as old as my cousin Chloe. In February of 2012, he will be three times as old as my cousin. How old was my cousin in February of 2000?

2006-11-18 17:08:42 · 9 answers · asked by MarkAngelo 2 in Mathematics

You know, after it's been embalmed, you've had the funeral and it's been put in the casket laid to rest in the dirt, how long does it take until it starts to decay? And what happens to your eyes and tongue and stuff like that?

2006-11-18 17:01:45 · 9 answers · asked by K 3 in Medicine

2006-11-18 16:50:13 · 8 answers · asked by gentltailya 2 in Zoology

2006-11-18 16:46:10 · 20 answers · asked by sush_bisht 2 in Biology