Science & Mathematics - 19 November 2007

2007-11-19 11:16:05 · 7 answers · asked by Anonymous in Mathematics

like how many ___ in quarts and on down the line. My school does a goofy gallon guy. but.. i forgot!

2007-11-19 11:15:40 · 3 answers · asked by Anonymous in Mathematics

I need to show all the work for this problem,: factor completely
3x^2-2x-8

2007-11-19 11:05:31 · 8 answers · asked by Zoomer1 1 in Mathematics

And how did it get 5+ miles deep below the earth. How does biorganic material degrade into a higher form of material such as oil. And if so why does'nt the remains of my relatives turn into a mini oil field for me?

Is there conclusive proof of this process, and who dreampt up the theory,

Im confused..

2007-11-19 11:05:25 · 5 answers · asked by █ORal-K 2 in Earth Sciences & Geology

2007-11-19 10:48:02 · 2 answers · asked by Anonymous in Mathematics

they say thats what its for, but wouldnt 1 or 2 be enough? (not that i even agree with that), why do they need 1000 whales??
and what do they need this scientific research for anyway?

2007-11-19 10:46:10 · 4 answers · asked by spdy 5 in Zoology

8th grade science homework assignment

2007-11-19 10:43:46 · 1 answers · asked by devarie93 1 in Earth Sciences & Geology

como se llama eso

2007-11-19 10:35:46 · 2 answers · asked by Wandy 1 in Geography

2007-11-19 10:30:22 · 2 answers · asked by osu9295 1 in Zoology

Each female crocodile lays 25 eggs over lifetime.
What percentage of eggs develope into mature crocodiles?

2007-11-19 10:28:27 · 1 answers · asked by Alexander 6 in Mathematics

just a question I've been thinking about for a long time.

2007-11-19 10:27:59 · 6 answers · asked by bobaho 1 in Astronomy & Space

How can i educate the public about why eathquakes occur? for my speech in my class?

2007-11-19 10:21:06 · 3 answers · asked by lovesit 1 in Earth Sciences & Geology

So i have some questions about heart rate...
why is it important to obtain a pulse at all?
Why is it important to be able to obtain a pulse on different parts of your body?
why is it important to know your target heart rate range?
if your heart rate drops below/exceeds target heart rate what does this mean for training?

2007-11-19 10:19:09 · 2 answers · asked by Anonymous in Medicine

I guess that believers in any of the mentioned claim some evidence to back up their beliefs in them.
Just wonder which has the largest body of legitimate scientific evidence to back it up.
For example the glowing orbs seen in some photos and videos could possibly be evidence for fairies?
So according to the evidence, which of the mentioned is most likely. Or do you believe some or all exist, and what do you use as the basis to justify the belief?

2007-11-19 10:15:58 · 76 answers · asked by madcat 5 in Paranormal Phenomena

A bricklayer has 8 bricks. 7 of the bricks weigh the same amount and one is a little heavier than the others. If the bricklayer has one balance scale, how can they find the heaviest brick in ONLY two weighings? :)

2007-11-19 10:15:02 · 16 answers · asked by Anonymous in Mathematics

Phosphorous pentachloride (PCl5) is used in the industrial preparation of many organic phosphorous compounds. Preparation of phosphorous pentachloride from PCl3 and Cl2 is given by the reaction :
(Eqn. 1) PCl3(l) + Cl2(g) PCl5(s)

Use the two equations below to calculate Hrxn of equation (1)

(Eqn. 2) P4(s) + 6 Cl2(g) 4PCl3(l)
H = -1280kJ

(Eqn. 3) P4(s) + 10Cl2(g) 4PCl5(s)
H = -1774 kJ

Hrxn = kJ

2007-11-19 10:14:48 · 3 answers · asked by Anonymous in Chemistry

Label each reaction as exothermic or endothermic ('exo' ir 'endo') and according to whether work is done on or by the system, or no work is doen at all ('on', 'by' or 'none')?

Pick either 'exo-none', 'exo-on', 'exo-by' or 'endo-by' for EACH of the following reactions:

a. N2(l) -> N2(g)
b. Cl2(aq) + 2KBr(aq) -> 2KCl(aq) + Br2(aq)
c. Zn(s) + 2HCl(aq) -> ZnCl2(aq) + H2(g)
d. NH3(g) + HCl(g) -> NH4Cl(s)
e. S(s) + 3/2O2(g) -> SO3(g)

2007-11-19 10:14:45 · 2 answers · asked by Anonymous in Chemistry

2007-11-19 10:14:26 · 6 answers · asked by Anonymous in Mathematics

I really need help!

2007-11-19 10:14:20 · 15 answers · asked by Anonymous in Mathematics

2007-11-19 10:13:17 · 56 answers · asked by Anonymous in Mathematics

2007-11-19 10:13:16 · 35 answers · asked by Anonymous in Mathematics

2007-11-19 10:12:44 · 19 answers · asked by Anonymous in Mathematics

Okay, My teacher asked me to ask this. What do you do with the remainder on a decimal long division problem? Do you add it on? Divide it again? If you can't divide it again then what? PLEASE HELP US!!!!!

*US as in my classroom

2007-11-19 10:10:54 · 8 answers · asked by skullzgurl666 2 in Mathematics

If asked to decide if a fertilized egg is a person, how would you vote?

2007-11-19 10:10:35 · 21 answers · asked by Anonymous in Biology

A satellite orbits a planet of unknown mass in a circle of radius 2.0 x 10^7 meters. The magnitude of the gravitational force on the satellite from this planet is F=80N.

A) What is the kinetic energy of the satellite in this orbit?
B) What would F be if the orbit radius were increased to 3.0 x 10^7 meters?

2007-11-19 10:09:19 · 1 answers · asked by info2know 3 in Physics

With all sorts of troublesome problems with fossil fuels (i.e. cost and polution), how much effort are we putting in to achieving a stable form of renewable energy?

2007-11-19 10:07:42 · 6 answers · asked by Ben H 2 in Physics

show work

2007-11-19 10:05:08 · 18 answers · asked by Anonymous in Mathematics

I mean SEEERIOUSLY!!! i am way to complex just to begin with. and the other thing is, this world is far to beautiful and complex to just happen by random chance. i mean words cant explain how amazing life is. and you HAVE to take this into concideration, honestly where do you go when you die? if your living right now and die later and than just stay there dead and not go anywhere, then what is the purpose to live? not to be remembered when everyone else is dead. I obveously have a lot of scientific reasons to back this thing up (back up everything what the bible says and proove that evolution is false) but im not going to. what i am going to do is just ask you this all you evolutionists...

if you dont believe in god, then why bother? why bother doing what your doing? why bother educatiing others. why bother being respectful. i mean your gonna die soon and if it feels good you might as well do it...why dont you hmm? why do you care to life knowing that there is no reward afterwards??

2007-11-19 10:04:33 · 13 answers · asked by Anonymous in Other - Science

2007-11-19 10:04:22 · 2 answers · asked by chick_n_flipflops 1 in Mathematics

how many times has its surface area increased?


please answer it clear and explain .

2007-11-19 10:03:53 · 1 answers · asked by Anonymous in Mathematics