Science & Mathematics - 14 July 2007

Some of the natural causes of the global climate change are - plate tectonics, volcanic activity, and long-term variations in the earth's orbit and the angle of of its rotation axis.

1) Describe each of the natural causes of global climate and explain how can each affect the climate.
2) The climate affects described above occur over long periods of time. Present a scenario by which some natural phenomenon might catastrophically change the global climate on a much shorter time scale.

Thanks!

2007-07-14 21:05:21 · 6 answers · asked by Sporty 2 in Earth Sciences & Geology

Write each equation in standard form.

1) y-2=3(x-5)


2) y-5=4/3(x-3)




Please show solution and thanks.

2007-07-14 21:00:19 · 6 answers · asked by Anonymous in Mathematics

2007-07-14 20:45:12 · 3 answers · asked by rayhan 1 in Other - Science

I am seriously asking this joke..and please don't poke fun at this!
I myself knew about the world trade center when I was 17..and I had been on the top of it..visiting it..when I "saw" the strangers who would do horrific damage to the building and to the people..but, I was wrong about in how many years this would occur! It frightened me so badly that I kept bugging my mom to go...I just wanted to get off of the building..this was in 1979! I knew that the building was going to be smashed or broken in some way or another..didn't see the accident...but, just had a awful, awful feeling..and could see where the men were from..they were wearing white and black prayer shawls...It made me mad that I could NOT do anything about it! This was to happen but, I thought oh, perhaps it will happen in another ten years...or so...Little did I know about the other times that it actually did happen and then how many years later it occurred! WHOA!!
I also thought America would not care..I was wrong!

2007-07-14 20:24:58 · 20 answers · asked by Anne99 2 in Parapsychology

2007-07-14 20:09:36 · 10 answers · asked by Anonymous in Astronomy & Space

2007-07-14 20:00:48 · 17 answers · asked by madhva 1 in Astronomy & Space

2007-07-14 19:55:57 · 2 answers · asked by ian f 1 in Chemistry

I have 2 Questions, feel free to answer if you'd like. All help is appreciated. Unfortunately, I can only choose one best answer.

QUESTION ONE:
Two point charges, q1 = +20.0nC and q2 = +10.0 nC, are located on the x-axis at x = 0 and x = 1.00 m, respectively. Where on the x-axis is the electric field equal to zero?

QUESTION TWO:

Two point charges, q1 = +20.0nC and q2 = +10.0 nC, are located on the x-axis at x = 0 and x = 1.00 m, respectively. What is the magnitude of the electric field at the point x = 0.50 m, y = 0.50 m?

Once agian, ANY Help is appreciated! Thanks to those who take the time to help! :)

2007-07-14 19:50:43 · 2 answers · asked by Anonymous in Physics

You know, you turn it upside down and it takes like and hour for the ooze to fall down and fill up the other side? :)

2007-07-14 19:44:27 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2007-07-14 19:41:36 · 1 answers · asked by Failure 2 in Physics

Can Ariel work like a battery? Like with the fruit things where you can get electricity out of the chemical energy from the citric acid? Can you tell me what reactions take place? Or if somebody already tried experimenting on this?

2007-07-14 19:40:28 · 2 answers · asked by stare@u 1 in Chemistry

I am not science based please help. Simple language is best!

Looking at the periodic table what is it possible or not possible to 'extract?' using Phytoremediation on a brown field site.?


What is Phytoremediation?
Phytoremediation consists in depolluting contaminated soils, water or air with plants able to contain, degrade or eliminate metals, pesticides, solvents, explosives, crude oil and its derivatives, and various other contaminants, from the mediums that contain them. It is clean, efficient, inexpensive and non-environmentally disruptive, as opposed to processes that require excavation of soil (Source: Wikapedia).

2007-07-14 19:28:12 · 4 answers · asked by Anonymous in Earth Sciences & Geology

If r and s are positive integers and (1/r) + s = 1, then what is the value of s in terms of r?

a) (r-1)/r
b) (1-r)/r
c) (1-r)/(1+r)
d) r/(1+r)
e) r/(r-1)

[4a - (2/3)] / 2 =?

a) 2a - (4/a)
b) 2a - 1
c) 2a - (2/3)
d) 2a - (1/3)
e) 8a - (4/3)

plz explain or show work

2007-07-14 19:27:10 · 5 answers · asked by ? 2 in Mathematics

That is Southern California.

2007-07-14 19:21:58 · 6 answers · asked by gambitleblanc 1 in Earth Sciences & Geology

Two equal positive charges are separated by a distance 2a. For what value of y is the force on a charge Q is placed at point p maximum?
ans- y sq.rt2/2

2007-07-14 19:07:52 · 1 answers · asked by Anonymous in Physics

A delivery man travels 50m north, 40m east, 20m south and then takes elevator 50 m up in the building. What is his final displacement from the origin?
ans-50 *1.414=70.7

2007-07-14 18:57:05 · 3 answers · asked by Anonymous in Physics

how would you reason this out?

ratio of volumes can be used instead of ratio of molarity in getting the reaction order.

any endo or exothermic reaction is increased by a rise in temperature

a 10oC ris in temperaure is more effective in lower temparatre than in higher temperatures

2007-07-14 18:54:14 · 1 answers · asked by Aj 2 in Chemistry

If I can weld some blades on it would it be practicle? Or should I use something else?

2007-07-14 18:22:35 · 8 answers · asked by sheltz32tt 2 in Engineering

2007-07-14 18:20:01 · 5 answers · asked by Karamoko D 1 in Mathematics

How ?

( collecting public experiences for a part of my senior project ) requested in outline.

2007-07-14 18:19:12 · 4 answers · asked by astrofoxx 1 in Astronomy & Space

2007-07-14 18:10:54 · 7 answers · asked by Krissy R 1 in Biology

Well jw if it was actually possible like if you had the money and really wanted it done , has it ever been done befor to anyone?

2007-07-14 18:10:22 · 9 answers · asked by Anonymous in Biology

I keep hearing a sound in my backyard like a rock being rattled around inside a can (with an amplifier connected to it). Is it an insect of some sort or a bird...I have heard it after dark, but always often during the day.

2007-07-14 18:04:18 · 6 answers · asked by Ford Prefect 7 in Zoology

2007-07-14 18:03:25 · 4 answers · asked by dhon_sspsc 1 in Botany

2007-07-14 18:01:56 · 2 answers · asked by dhon_sspsc 1 in Botany

No hints....THINK!

2007-07-14 18:01:18 · 6 answers · asked by andyg77 7 in Physics

2007-07-14 17:58:55 · 2 answers · asked by Wendy R 1 in Botany

2x - y = 0 and x - 2y = 3, then 6x - 6y = ?

a) 6 b) 12 c) 18 d) 21 e) 24


If x + y = 12 and x - y = (1/3), then x^2 - y^2 = ?

a) 36 b) 16 c) 8 d) 4 e) 2

explain pls

2007-07-14 17:58:37 · 10 answers · asked by Anonymous in Mathematics

Why does the difference between experimental and calculated value of AgCl's lattice energy is larger than of NaCl's.
p.s. this is under the Born-Haber cycle chapter so i think they are somehow related.
Thanx a lot!

2007-07-14 17:58:05 · 1 answers · asked by mcpheevn 1 in Chemistry

2007-07-14 17:55:03 · 12 answers · asked by skand_gpt 1 in Chemistry