Science & Mathematics - 11 September 2006

I have heard that during or before a muscle cramp, someone can take a calcium supplement, and the cramp ends, or does not begin. Can someone explain the physiology behind this?

2006-09-11 09:33:59 · 2 answers · asked by CK 1 in Biology

1 ⤊

Does anyone hav a picture of a boweavel? How do I get rid of these?

I am 99% sure this is what I have found in my kitchen. Small black, does not fly or jump. About 1/16" and can show up anywhere. I have sprayed and cleaned my cupboards now 4X, put boraxo under shelf paper, and then even bombed my whole house, all within 3 days. I have caulked all shelves in my kitchen top and bottom, washed every can and dish., emptied everything and thrown away anything that was open. I even opened all boxed goods and rinsed all plastic packages inside. 1 Brownie mix when I ran it under water was wet, a very small hole was in it. How do I get rid of these?

2006-09-11 09:33:50 · 6 answers · asked by paula b 1 in Biology

2 ⤊

Calcium and muscle cramps?

I have heard that during or before a muscle cramp, someone can take a calcium supplement, and the cramp ends, or does not begin. Can someone explain the physiology behind this?

2006-09-11 09:32:56 · 7 answers · asked by CK 1 in Medicine

0 ⤊

are compounds electrically neutral?

2006-09-11 09:30:19 · 2 answers · asked by joseph d 1 in Chemistry

70 ⤊

What makes water wet, when some other liquids aren't?

I was taught in Chemistry that a liquid can only be considered wet if water is involved. Therefore you can have a dry liquid eg, mercury. So what makes water have this tendency to be wet but not other liquids.

2006-09-11 09:29:54 · 2 answers · asked by Ruth B 1 in Chemistry

0 ⤊

what are 5 easy steps in becoming a doctor?

career

2006-09-11 09:29:42 · 9 answers · asked by step 2 in Medicine

4 ⤊

What does a frequency table look like?

2006-09-11 09:29:25 · 0 answers · asked by Onye 3 in Mathematics

0 ⤊

I am having trouble with matrices some one help?

I am having trouble with this equation, could somebody help me?

Directions:

Solve the system of equations by using the inverse of the coefficient matrix.

3x + 5y = -2
3x + 8y = 4

Ok, this is what I have done to get an answer but it is wrong

3 5 1 0 ==> -1R1 + R2 ==> R2
3 8 0 1
--------------------------------------------------------------------------------

3 5 1 0 ==> -3R1 + 5R2 ==> R1
0 3 -1 1

--------------------------------------------------------------------------------

-9 0 -8 5 ==> -1/9R1 ==> R1
0 3 -1 1

--------------------------------------------------------------------------------

1 0 8/9 5/9
0 3 -1 1 ==> 1/3R2 ==> R2

-------------------------------------------------------------------------------

= 1 0 8/9 5/9
0 1 -1/3 1/3
-------------------------------------------------------------------------------

= 8/9 5/9 * -2 = 4/9
-1/3 1/3 4 2

Now I know this is not correct since I plugged my answers in and it did not work. somebody please help?

2006-09-11 09:29:19 · 3 answers · asked by computerbum 2 in Mathematics

5 ⤊

Do you think that Pareto's Law can be applied to everything?

2006-09-11 09:29:16 · 7 answers · asked by Apollo 2 in Mathematics

0 ⤊

Or,How about autoinflatable slides like the airoplaines has in case of emergency exit exept that bigger?

Thinking of your answer that something else but for untrained people made me think of this option that the airoplanes has but in a larger scale.
I am wonder if anyone will think about to try to put in experiment something like that ...that will bring lots of extreme sport funs together.Ha-ha.
zorro1701e
Level 1

not parachutes, these would be more dangerous to untrained people, but something does need to be developed.

2006-09-11 09:26:22 · 1 answers · asked by knottaty 1 in Engineering

1 ⤊

What do teapots have to do with crows?

If I want to test the hypothesis 'All crows are black' I can go out and look for crows and check what colour they are. The more crows I see that are black, the more likely the hypothesis is to be true. Each black crow observed is a 'confirming instance' of the hypothesis.

Now, a LOGICALLY EQUIVALENT statement to 'All crows are black' is 'Anything that is not black is not a crow'. So, I can check the equivalent statement instead. That is, everything I observe that is not black AND is not a crow is, logically, a confirming instance of the original hypothesis that 'All crows are black'.

So, I have a green teapot. By observing that, am I helping to confirm the hypothesis that 'All crows are black'? Logic says I am . . .

2006-09-11 09:25:59 · 10 answers · asked by Barks-at-Parrots 4 in Mathematics

0 ⤊

I'm found between a solid and a gas in my family, but actually I'm a liquid. I have four energy shells.Who amI

2006-09-11 09:24:54 · 4 answers · asked by john b 1 in Chemistry

0 ⤊

what are 3 uses for isotopes around the house?

2006-09-11 09:23:11 · 4 answers · asked by Anonymous in Chemistry

1 ⤊

how is quartz used to make watches work?

how does it work?

2006-09-11 09:20:14 · 2 answers · asked by pyarali2 1 in Other - Science

7 ⤊

If u saw a bug that is trapped in a spider's web, would u try to save it from the spider, or not? Why?

I feel sorry for the bug, but is that messing with nature to try to set it free?

2006-09-11 09:18:26 · 15 answers · asked by JeenaBlahBlahBlah 3 in Other - Science

2 ⤊

Can molten copper and zinc reach temperatures exceeding 10,000 degrees Fahrenheit?

Desperate to confirm a fact for a story I am writing: can a furnace at a smelting factory melt copper and zinc at temperatures exceeding 10,000 degrees Fahrenheit? PLEASE HELP! Thank you.

2006-09-11 09:17:36 · 5 answers · asked by ScottG 1 in Earth Sciences & Geology

0 ⤊

How high can fly's fly?

I often see flys upstairs but do they come through the window or do they come up the stairs? Can they fly above the house? If so can the birds catch them?

2006-09-11 09:14:40 · 13 answers · asked by Anonymous in Zoology

11 ⤊

Is it really possible, and if so, what would it take for the earths' axis to shift?

I saw a History Channel on Edward Cayce yesterday and was wondering if it's really possible for the earth's axis to shift, and what would be some of the causes or reasons for the shift? Just wondering, thought it was interesting. Thanks!

2006-09-11 09:11:41 · 11 answers · asked by superrix83 4 in Astronomy & Space

3 ⤊

What happens when you heat mercury?

I want to know if when mercury is heated if it cuases it to move or shift. Also, what is the density of mercury when compared to other heavy metals? If it spins fast enough, will it provide enough inertia to negate gravity's effect on mass but still retain it's "weight" and be capable of propelling an object from point x to point y if the mercury is shifted or nudged?

2006-09-11 09:11:23 · 8 answers · asked by Sebastian F 2 in Physics

1 ⤊

What is the best book for industrial management?

ISO 9001

2006-09-11 09:10:41 · 1 answers · asked by srinivas v 1 in Engineering

2 ⤊

math!!!!!!!!!!!!!!!!!!!!!!?

will measured the mass of an object to be 145g. the object's actual mass was 153g. what is wills percent error

2006-09-11 09:03:36 · 8 answers · asked by soccerstar11 3 in Mathematics

0 ⤊

Umm math homework help? WordProblem?

While on summer vaction,Jim realized that one of the world's tallest office buidings was in malaysia. The building had 88 stories and the total height of all 88 stories was 1,232 ft. Jim pondered about something; how can I slove and write and equation to represent the hight of one story?

TY ALL I NEED HELP ANY THING IS WORTH IT!!!!

2006-09-11 09:02:24 · 11 answers · asked by Anonymous in Mathematics

2 ⤊

Was the moon full on July 12, 1989? If not How close was it?

I want to know what moon I was born under...

2006-09-11 09:02:24 · 2 answers · asked by Anonymous in Earth Sciences & Geology

4 ⤊

Why can you not touch metal objects with bare hands at -40 degrees?

please answer in terms of atoms or particles

2006-09-11 08:59:35 · 8 answers · asked by AF D 1 in Physics