Science & Mathematics - 19 December 2007

A stone is dropped into a deep canyon and is heard to strike the bottom 10.2 seconds after release. The speed of sound waves in air at the canyon is 334 m/s. How deep is the canyon?

Method and answer would be much appreciated!

2007-12-19 14:30:16 · 3 answers · asked by =) 3 in Physics

2007-12-19 14:29:59 · 5 answers · asked by jeremy 2 in Chemistry

2007-12-19 14:29:24 · 2 answers · asked by Madman08 1 in Chemistry

Any notable quakes since 1812?

2007-12-19 14:24:54 · 1 answers · asked by Thomas E 7 in Earth Sciences & Geology

Assume that the hair is 3 inches long and has a diameter of .0025 inches.

Assume that stars are evenly distributed and include stars that cannot be seen with the naked eye.

2007-12-19 14:24:31 · 4 answers · asked by Anonymous in Astronomy & Space

2007-12-19 14:23:07 · 7 answers · asked by Rover Fan 4 in Astronomy & Space

I have had stomach and lower back pain for a long time.., I would say atleast a year and have had some tests run for gall bladder issues, Gerd, emptying scan, and everything had come back normal. But if I am on my feet for 20-30 minutes my lower back and stomach hurts so badly!! The pain is so unbearable most of the time!!!!!!!
I have had Ulcerative Colitis, and have not had a colonoscopy in 5 or 6 years but the doctors keep telling me its not my colitis because there isnt diahrrea associated with it. I do have blood in the stool most of the time and suffer from alot of constipation so I am really scared its something serious! I do go to my Gastrointerologist in Jan but if someone could tell me anything it would be greatly appreciated! I also have been diagnosed with IBS, Hiatel Hernia.

2007-12-19 14:21:07 · 1 answers · asked by Anonymous in Medicine

and if so how high would we fly off

2007-12-19 14:20:03 · 4 answers · asked by Anonymous in Earth Sciences & Geology

potassium is stored under oil. why??

2007-12-19 14:19:40 · 3 answers · asked by Anonymous in Chemistry

what is the different time from central stuart time

2007-12-19 14:17:54 · 2 answers · asked by isiah m 1 in Geography

For future reference- how would one obtain such data?

2007-12-19 14:08:49 · 4 answers · asked by curious423 1 in Geography

Since gravity is the fabric of space-time continuum there is much work for matter to do.

2007-12-19 14:07:07 · 3 answers · asked by Steve R 1 in Astronomy & Space

2007-12-19 14:06:33 · 2 answers · asked by me 2 in Botany

2007-12-19 14:02:42 · 11 answers · asked by P K 3 in Astronomy & Space

realisticaly do you think those videos were fake or real?

i think they look fake, and like special effects. similar to the one where it shows a supposed UFO creating crop circles

2007-12-19 14:01:51 · 7 answers · asked by Anonymous in Astronomy & Space

2007-12-19 14:00:49 · 5 answers · asked by tweety_mek 1 in Engineering

how close to 2 do we have to take x so that 5x+3 is within distance of .025 from 13?

um. how do you figure that out? thanks

2007-12-19 13:58:28 · 2 answers · asked by mastriannichris 1 in Mathematics

Purpose:
1) To create a self designed lab
2) To determine whether the sunlight could harm the plant growth
- The higher the amount of Sunlight (dishwasher), the lower the rate of plant growth

2007-12-19 13:58:13 · 2 answers · asked by majididrees686 1 in Botany

2007-12-19 13:56:06 · 6 answers · asked by Anonymous in Geography

2007-12-19 13:55:36 · 5 answers · asked by bobbobbybilly510 1 in Earth Sciences & Geology

An exploratory team is sent to investigate a newly discovered planet. The astronauts feel only 75% as heavy as they do on Earth. The radius of this planet is 2.0x10^6 meters. What is the mass of the planet??

i tried it wanted to check if the anwser was right

2007-12-19 13:55:03 · 2 answers · asked by beachjim@sbcglobal.net 1 in Astronomy & Space

2007-12-19 13:52:16 · 5 answers · asked by Maple Sugar 4 in Astronomy & Space

2007-12-19 13:50:09 · 7 answers · asked by mopepig 1 in Other - Science

Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in standard form.
-3i and √3



My question:
I know that 3i is another zero, but is -√3 also a zero?

2007-12-19 13:49:34 · 2 answers · asked by Jane 2 in Mathematics

i need detailed steps into how to fin all zeros. i dont understand how u find imaginary numbers. for example

f(x)=x^3-x^2+49x-49


the answer is 1+/- 7i but how did u get that? please help!!! and if u have your own equation please use it to show me!

2007-12-19 13:48:27 · 2 answers · asked by Anonymous in Mathematics

need help with these problems, my physics teacher is evil and when people asks for help he says its physics your not supposed to get it. Please show work so i know how and explain to people

1. In tackling a running back from the other team, a defensive lineman exerts a force of 500N at 180*, while a linebacker simultaneously applies a force of 650N at 270*. What is the resultant force on the carrier?

1. 1 force of 60N and a 2nd of 30N act on an object at point P. Add the vectors and find the magnitude of the resultant at 30*,45*,&60*

2007-12-19 13:48:15 · 1 answers · asked by deathgod197 3 in Physics

2007-12-19 13:48:00 · 7 answers · asked by Timber 4 in Geography

2007-12-19 13:45:07 · 1 answers · asked by Anonymous in Medicine

Prove that log a^b = b log a

2007-12-19 13:43:54 · 2 answers · asked by CaptainKangaroo 1 in Mathematics

Please Help!

2007-12-19 13:42:23 · 10 answers · asked by Anonymous in Mathematics