Science & Mathematics - 15 December 2006

I watched a discovery channel show (yes, I'm a geek!) about a volcano that can erupt any second now and kill all living things in a matter of days. It will kill everything by blocking out the sun with ashes and the rain will be completely acidic. Why have we not heard about it before? Why has there been no other mention about it before? And is there anything we can do?

2006-12-15 09:38:25 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2006-12-15 09:37:27 · 4 answers · asked by GotanIdea? 1 in Earth Sciences & Geology

ok so i need help figuring out what this number is
~>6,588,000,000,000,000,000,000,000,000<~
if any1 could please tell me what that number is and possibly tell me by each column (i.e. ones tens hundreds)
is ne1 is wondering its how much the earth weighs

2006-12-15 09:34:24 · 8 answers · asked by blondie 2 in Mathematics

Giant candy bars are on sale, 4 for $6.40. How much does each candy bar cost?

2006-12-15 09:34:04 · 8 answers · asked by ♥ 6 in Mathematics

2006-12-15 09:32:53 · 11 answers · asked by Anonymous in Zoology

don't worry i am not cheating you can do one or as many as you would like just right the number next to it

3. solve for y... 14.2y-12.5=6.4y-13.7

4. solve... -(-80)|-7|

5. solve for x... 5x+14-2x=9-(4x+2)

6. What is 57000/160 rounded to the nearest hundred

7. use substition to solve this 2x-y=7
and x+4y=-1

thanks you cafn do as many as u would like

2006-12-15 09:28:11 · 9 answers · asked by Anonymous in Mathematics

2006-12-15 09:27:20 · 6 answers · asked by gordon f 1 in Medicine

Step by step instructions with answers please. I need to check if I'm following it correctly.

What is the freezing point depression of 17.1 g sucrose and .10 water?

If 0.50 mol of Nacl are dissolved in 500.0g of ether, what is the freezing point of the solution?

If 222 g CaCl2 are dissolved in 1000 g of water what is the freezing point of the solution?

What is the boiling point elevation of 74.5 g KCl and 400.0 g water?

What is the boiling point of a solution of 149.0 g KCl and 400.0 g water?

A solution contains 450.0 g sucrose and 125.0 g water. What is the boiling point of the solution?

Thanks for your help.

2006-12-15 09:27:03 · 3 answers · asked by ChristopherD. 2 in Chemistry

2006-12-15 09:16:17 · 12 answers · asked by Nadia Miller 2 in Zoology

2006-12-15 09:14:49 · 20 answers · asked by smarty 1 in Mathematics

1) Mg(OH)2→ Mg2+ + 2 OH–
2) MgOH → Mg2+ + OH2–
3) Mg(OH)3→ Mg3+ + 3 OH–
4) Mg(OH)2→ Mg2+ + H2O

2006-12-15 09:13:46 · 4 answers · asked by Bill J 1 in Chemistry

2006-12-15 09:13:38 · 7 answers · asked by Anonymous in Astronomy & Space

A rubber ball has the property that, on any given bounce, it returns to one-third of the height from which it just fell. Suppose the ball is dropped from 108 feet. How far has the ball traveled the fourth time it hits the ground?

2006-12-15 09:09:04 · 3 answers · asked by TheRenegade 1 in Physics

The answer is -5r+s Can someone spell this out for me?

2006-12-15 09:08:02 · 14 answers · asked by grem 3 in Mathematics

2006-12-15 09:06:47 · 15 answers · asked by Jr Z 1 in Weather

The average time it takes Jane to get to work is 15 minutes with a standard deviation of 3 minutes. 75% of the time it will take Jane longer than how many minutes to get to work?

2006-12-15 09:05:43 · 2 answers · asked by mrkittypong 5 in Mathematics

Is there any reason a drug test would be positive for barbituates after taking antibiotics? Could the combination of antibiotics and a local antistetic cause this??

2006-12-15 09:04:41 · 3 answers · asked by Anonymous in Medicine

Sr(OH)2 + 2HNO3→

1) SrNO3 + H2O.
2) Sr(NO2)2 + 2H2O2.
3) SrH2 + HNO5.
4) Sr(NO3)2 + 2H2O.

2006-12-15 09:04:29 · 5 answers · asked by Bill J 1 in Chemistry

what will happen to a shadow of an object if the distance between an opague object and the light source is INCREASED?

2006-12-15 09:04:22 · 1 answers · asked by Anonymous in Physics

Very often, students (presumably high school and early college) will ask very specific questions on the general science, physics, chemistry, and math boards. I'm sure this happens on other boards, as well. These questions clearly come from homework assignments, extra credit assignments, exams and the like. The question is, do we violate academic integrity by giving away answers? Or are we bound by a social contract that if a user asks a question, we are required to give an answer? Who wins? Who loses?

2006-12-15 09:03:36 · 11 answers · asked by woocowgomu 3 in Other - Science

To any TEACHERS, FELLOW STUDENTS OR MATH HOUNDS, PLEASE HELP. Its finals time and I would really appreciate any help, even referrals to any good math help sites. I need help Completing the Square.

2006-12-15 09:03:15 · 14 answers · asked by luckylix1373 2 in Mathematics

hint: its not the core

2006-12-15 09:02:38 · 7 answers · asked by GotanIdea? 1 in Earth Sciences & Geology

A cart of mass 1.7 kg coasts 70 cm up an incline at 6 degrees with horizontal. Assume that frictional and other nongravitational forces parallel to the incline are negligible.
•What is the component of the cart's weight parallel to the incline?
•How much work does this force do as the cart rolls up the incline?
•How much work does the net force do as the cart rolls up the incline?
•Using the definition of kinetic energy determine the velocity of the cart after coasting the 70 cm, assuming its initial velocity to be zero.

2006-12-15 08:56:40 · 1 answers · asked by tan 1 in Physics

ok if you have 65 questions on a test how many do you need to get right in order to get a A PLEASE show ur math work thanks

2006-12-15 08:54:26 · 10 answers · asked by Anonymous in Mathematics

2006-12-15 08:53:52 · 7 answers · asked by Anonymous in Geography

2006-12-15 08:53:03 · 9 answers · asked by Eric Inri 6 in Medicine

2006-12-15 08:50:43 · 21 answers · asked by ???????????????? 1 in Mathematics

An icy surface,An underground ocean,Active volcanoes,
or An atmosphere.

2006-12-15 08:50:15 · 5 answers · asked by janissa_free2b 2 in Astronomy & Space

I am currently taking chemistry. It fairly hard but I'm making it. Right now were' re on moles and mole masses. This section is tough. I like science and was wondering how is chem 2 like? Is it harder and more complex, or alittle easier? I need some info, thanks, really appericate it.

2006-12-15 08:49:39 · 4 answers · asked by joecool7406@sbcglobal.net 1 in Chemistry

A regular tennis ball and another one filled with sand are dropped at the same time from the top of a high building. Your friend says that even though air resistance is present, both balls should hit the ground at the same time because they are the same size and "plow through" the same amount of air. What do you say?

2006-12-15 08:46:34 · 6 answers · asked by Anonymous in Physics