Science & Mathematics - 4 January 2007

Does any one know any good websites i can use to find information on how math is important with roller coasters? I need info on like angles and diagrams and construction and formulas and other things.

2007-01-04 13:03:04 · 2 answers · asked by NONAME 1 in Engineering

i need to finish a science experiment and i have to do different ph's on it so how do you make acid water with ingredients you can find in a regular house?

2007-01-04 13:02:55 · 2 answers · asked by tinkerbell fairy 1 in Other - Science

Every chemical reaction involves a

a. change in the state of matter in the reactants
b. net release of free energy
c. transfer of energy from one form to another
d. transfer of electrons between atoms

2007-01-04 13:02:20 · 4 answers · asked by maisha 3 in Biology

7i(x+3i) +5

2007-01-04 13:01:51 · 8 answers · asked by Siny T 1 in Mathematics

apples are grown in the southern part of the state, cotton is grown in the center part of the state, corn and peanuts are grown in the southern part of the state

2007-01-04 12:57:38 · 8 answers · asked by Anonymous in Geography

24
25
70
55
68
121
92

2007-01-04 12:56:17 · 6 answers · asked by Red 1 in Mathematics

Hi, all I am currently in a debate with a friend, while sitting around talking about saving pennies. We somehow got into this mathmetical disagreement. I say it takes 100, million to make 1 millions dollars. He says it takes 1 million pennies to make 1 million dollars. LOL, People post so he can see I am right. LOL Wh have a 20 dollar bet going.

2007-01-04 12:56:16 · 20 answers · asked by angelheart 2 in Mathematics

2007-01-04 12:55:50 · 3 answers · asked by manni 1 in Astronomy & Space

2007-01-04 12:55:50 · 7 answers · asked by Anonymous in Zoology

2007-01-04 12:53:47 · 2 answers · asked by smliey 1 in Medicine

for Mg.
the difference between the 2nd and 3rd uibuzation energies is much larger than the difference between the 1st and 2nd ionization energies. Why so?

ion. energies for Mg. : 1st: 7.6 ev
2nd: 14 ev. and 3rd: 80 ev.

(if u notice double to each energy level)
please explain

2007-01-04 12:53:47 · 3 answers · asked by chanti 3 in Chemistry

2007-01-04 12:53:23 · 5 answers · asked by jessica 1 in Astronomy & Space

i've been told they were the same animal. and told they were different animals.

2007-01-04 12:53:13 · 12 answers · asked by Anonymous in Zoology

is that true or false?
and if its true or false can you please show me how to work it

2007-01-04 12:52:57 · 7 answers · asked by Caroline M 2 in Mathematics

Read this first:

Deron's lunch in the cafeteria costs $3.29,he gave the clerk a five-dollar bill and four pennies.

Now the question is:
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Why did he give the clerk the four pennies?
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i really dont know why..please help

2007-01-04 12:52:03 · 9 answers · asked by Question box 1 in Mathematics

2007-01-04 12:50:18 · 5 answers · asked by baby baller 1 in Astronomy & Space

p.s if anyone has a time travel machine, can i borrow it?

thanks :)

2007-01-04 12:47:40 · 16 answers · asked by t2k4life 1 in Astronomy & Space

the radioactive substance neptunium-139 decays to 73.6% of its original amount after 24 hours. What is the half life of neptunium-139?

2007-01-04 12:46:36 · 4 answers · asked by eyse 2 in Mathematics

what are the drawbacks of natural insulating material and enginnered

2007-01-04 12:45:17 · 3 answers · asked by Don Reyes 3 in Engineering

in an experiment we burned peanuts to find out the energy content of it. The formula we used was (4.18*mass of water*change in temperature) / amount of food burnt. using that equation i get 11067 joules per gram or j/g. in kilojoules per gram i get 11.067. does this sound like reasonable values for a peanut? and is the formula ok?

2007-01-04 12:44:51 · 2 answers · asked by sPoCoKeT 3 in Biology

2007-01-04 12:44:46 · 14 answers · asked by Zulu 1 in Physics

Inflation is causing things to cost roughly 2% more per year.
a. A bag of milk costs $3.75 now. Estimate its cost in five years.
b. A movie ticket costs $8.50 now. If inflation continues at 2% per year, when will the ticket cost $10.00?

2007-01-04 12:43:18 · 2 answers · asked by untilyoucamealong04 3 in Mathematics

what do you do with negative fractional exponents??
for example (2+x)^-1/2

2007-01-04 12:40:36 · 8 answers · asked by Anonymous in Mathematics

2007-01-04 12:40:16 · 2 answers · asked by Alex 2 in Engineering

2007-01-04 12:40:14 · 7 answers · asked by cead 3 in Zoology

i need answers quick plz

2007-01-04 12:40:06 · 6 answers · asked by Someone 1 in Mathematics

i need to know where to find the job and how to go about getting it. like who do i have to talk to, do i need like a teachers recomendation, things like that

2007-01-04 12:38:58 · 7 answers · asked by cora D 1 in Other - Alternative

2007-01-04 12:38:12 · 6 answers · asked by Jenny N 1 in Chemistry

If anything, it appears that the date of the Indian discovery of the Zero may be accurately identified but the date of the Mayan discovery of the Zero is not as certain. Yet there appears to be evidence the Mayan Culture used their numbering systems prior to the Indian discovery of the Zero.

Please provide additional resources other than the ones listed below to further a better answer to this question.

Resources:
http://www-history.mcs.st-andrews.ac.uk/HistTopics/Mayan_mathematics.html
http://www.mayacalendar.com/mayacalendar/f-mayamath.html
http://www-history.mcs.st-andrews.ac.uk/HistTopics/Zero.html
http://en.wikipedia.org/wiki/Brahmagupta
http://en.wikipedia.org/wiki/Al-Ma%27mun

2007-01-04 12:37:24 · 5 answers · asked by Kirk 2 in Mathematics

i just want to have an adventure...

2007-01-04 12:37:02 · 8 answers · asked by rice<3 1 in Paranormal Phenomena