Science & Mathematics - 6 September 2007

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Might not make much sense...?

Sorry if this sounds like a load of crap but I'm not sure how to put it exactly.
If we could break down all external and internal variables (such as physical actions, e.g. the weather, or mental activity, e.g. a person's unique personality and reaction to events) into mathematical formula, basically obtaining all possible data about an environment and the objects and processes interacting in it, would it be possible to predict exactly the outcome of future events?

2007-09-06 09:11:16 · 5 answers · asked by Anonymous in Mathematics

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what is the equation that governs evaporation rate in a closed system?

supposed I have a container that I can close entirely. Also suppose that we put some water into the container and leave the rest as air. Then we close the container and start to heat it.

What is the formula that governs the evaporation rate of the water and the total amount of water in vapor form? I would be very interested in the physics behind the derivation of the formula, so if someone can suggest a textbook or webpage, I would be much obliged.

thanks

2007-09-06 09:08:29 · 5 answers · asked by janbbeck 2 in Physics

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whats biochemistry?

im doing my project on biochemistry but i dont know what it means.

2007-09-06 09:08:26 · 6 answers · asked by Anonymous in Chemistry

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Pre-Calc question?

f(a+h) - f(a)
-------------- <- Formula given in the book
h

Simplify x^2 + 1 (using the above)

Also, what does the F(a+h).... equation mean?

Step by step procedure please :-)

Could someone explain what f(a), f(h) ect mean as well?

2007-09-06 09:08:21 · 2 answers · asked by Anonymous in Mathematics

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what countries start with the letter c?

2007-09-06 09:07:40 · 9 answers · asked by andykpln 4 in Geography

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This is an easy 10 points for someone to get it's a seriouse question?

i'm not that good at math and calenders (dates) ok i made a purchase on 6/04/07 for over $100 and didn't get the extended waranty so they said if something goes wrong i have 90 days to return it,has it been 90 days? thanks.

2007-09-06 09:06:54 · 11 answers · asked by Anonymous in Mathematics

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how tall is a tree that casts a 17ft shadow at the same time a 9ftlamp post casts a 12ft shadow?

2007-09-06 09:06:27 · 14 answers · asked by ladyblaze30 1 in Mathematics

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what is the equation of a sphere with the given: 2x^2 + 2z^2 - 2x - 3y + 5z -2=0 ???

Sorry, I am very confused with this sphere equation stuff =P

2007-09-06 09:05:54 · 2 answers · asked by Anonymous in Mathematics

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Test CO2 Levels in Water?

How can the level of carbon dioxide be measured in ppm in water, like in a fish tank?

2007-09-06 09:04:17 · 1 answers · asked by PB 1 in Biology

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if f=9/5 c+ 32, what is the celsius temperature in a room at 59 degrees?

2007-09-06 09:03:19 · 2 answers · asked by ladyblaze30 1 in Mathematics

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It's water, right?

http://www.abington.k12.pa.us/zuckar/ban_dihydrogen_monoxide.htm

today was my first day of bio, 9th grade. my teacher gave us this website to read over, and discuss on monday. isn't dihydrogen monoxide water? from the way it's described, 'Most of these deaths are caused by accidental inhalation of DHMO, but the dangers of dihydrogen monoxide do not end there. Prolonged exposure to its solid form causes severe tissue damage' If you breathe in water, you'll drown, and if you are exposed to ice for a long time, you'll get frostbite.
So... am I right?

2007-09-06 09:01:55 · 4 answers · asked by cloulve 2 in Chemistry

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can you make a list of new technologies?

like clipboards, white board
and can be electronic or not

2007-09-06 09:00:37 · 1 answers · asked by Anonymous in Engineering

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pH of resulting solution?

1.08 g of NaH2PO4 and 3.66 g of K2HPO4 are dissolved in sufficient water to make a liter of solution. Calculate the pH of the resulting solution.

2007-09-06 09:00:26 · 1 answers · asked by jon st. germain 1 in Chemistry

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How do you solve for x?

how do you solve for x?

x/2x-1= b

I'm trying to help someone with this problem and can't get it.
Thanks.

2007-09-06 09:00:16 · 2 answers · asked by RedZebra115 2 in Mathematics

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what is this?

a -18 divided by 2....???.....and what is 7.5 + (-2)...i dont gettit!

2007-09-06 08:58:41 · 5 answers · asked by The Miz 3 in Mathematics

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Is the density of hexane (d = 0.659 g/mL at 20° C) the same, higher, or lower at 20° than at 40° C?

Thank you in advance!

2007-09-06 08:58:20 · 1 answers · asked by Kate 1 in Chemistry

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Use the distributive property to evaluate -- 5(100 + 20 + 9) = ???

Intergers !! =(
HELP plz. show work =]

2007-09-06 08:56:41 · 12 answers · asked by Anonymous in Mathematics

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1 over 2 - 1 over 3?

2007-09-06 08:52:42 · 11 answers · asked by jessie 1 in Mathematics

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(+4) + (-12) = ?

Hi everyone ,
Can anyone tell me the answer to the answer to this simple equation ? ,
Much appreciated !

2007-09-06 08:52:07 · 11 answers · asked by baaaby♥ 3 in Mathematics

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math questions?

does nebody no how to do these problems

3a-4=a+8
2n-5=1/2n+4

2007-09-06 08:50:50 · 5 answers · asked by Anonymous in Mathematics

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can you help me find the value of this math expressions?

1/4 [-5+5(-3)]

1/2[6-4^2]

2007-09-06 08:48:49 · 8 answers · asked by Mo 1 in Mathematics

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We are trying to solve X?

x . . . .1
--- = ---
8 . . . .5

If you know how to do this, maybe you could explain. My 14 year old boy does not know how to do these. Thanks!

2007-09-06 08:47:49 · 9 answers · asked by brady s 1 in Mathematics

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If a magnet has 26 MGOe how far must you be from the field to experience 5 G?

The magnet that I am working with is a Samarium Cobalt magent. It is dole shaped with dimensions 0.25 inches by 0.25 inches. I am attempting to find out how close the samarium cobalt magnet can come to a pacemaker (which cannot have a >5 G field).

2007-09-06 08:47:46 · 1 answers · asked by Cathy C 1 in Engineering

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