Science & Mathematics - 26 September 2007

WHY DOES ICE FLOAT ON WATER

2007-09-26 18:00:30 · 3 answers · asked by ? 3 in Physics

I read about sightings of a flying man with a blue superman outfit have been seen.All a complete hoax?what could they have seen?It's a bird,a plane...

2007-09-26 18:00:08 · 24 answers · asked by Life goes on... 6 in Paranormal Phenomena

can they later find their acorns exactly where they barried them?

2007-09-26 17:59:03 · 9 answers · asked by Coco 2 in Agriculture

2007-09-26 17:58:53 · 4 answers · asked by Kriz S 1 in Chemistry

a - A runnning car engine in a closed garage. b- Cooking on a bbq grill indoors with all windows and doors closed.c- Cooking on a propane grill outside. Both A and B...or All listed above

2007-09-26 17:57:16 · 3 answers · asked by WINO86 1 in Chemistry

Like the green children from another dimension of perpetual starlight,would be like?Would it even be possible?

2007-09-26 17:56:55 · 13 answers · asked by Life goes on... 6 in Paranormal Phenomena

A carbon compound has an empirical formula of CH2O and an approximate molecular weight of 117. What is its molecular formula?

2007-09-26 17:54:35 · 1 answers · asked by tyler8x6 2 in Chemistry

ketch the graph of an example of a function that satisfies all of the given conditions.

lim f=1 (as x approaches 0^-)
lim f =-1 (as x approaches 0^+)
lim f=0 (as x approaches 2^-)
lim f=1 (as x approaches 2^+)
f(2)=1, and f (0) is undefined

How would I draw this?
If someone could help, that would be AMAZING.
I'm up ALL night trying to do this one question.
Maybe a little drawing paint? IDK, but ANY HELP would be greatly appreciated!

2007-09-26 17:52:12 · 1 answers · asked by Anonymous in Engineering

multiplying radicals

root 8 * ( - root 18)

root 7 * root 8 = root 54 right?

- root 2 * 3 and root 8

2007-09-26 17:49:32 · 2 answers · asked by Anonymous in Mathematics

I'll lose a hundred and eighty men if i can't find me way.

2007-09-26 17:46:25 · 4 answers · asked by Bloody Merv The Drunken 1 in Astronomy & Space

And Will It Be Visible At All From A Distance of Light Year

2007-09-26 17:43:25 · 3 answers · asked by engelfeurs 2 in Astronomy & Space

My friend told me about it. You know, that's where you and your friend have times to communicate through thoughts at certain hours. It's super weird, and I'm still getting the hang of it. But it's phenomenonly correct most of the time.What do you think? (PS this is from Kezenz)

2007-09-26 17:39:33 · 4 answers · asked by Anonymous in Paranormal Phenomena

By Expanding e^(X(1+i)) in a power series, How can I show that....

a. e^x cos x = (The summation of n = o to infinity) (1/n!)(X^n)(2^(n/2))sin (3.14n/4)

3.14 = Pi

2007-09-26 17:36:12 · 1 answers · asked by WhoaNonstop 2 in Mathematics

Please, no guesess, only solid facts from official websites or backed up with evidence. Thank you!

2007-09-26 17:23:52 · 2 answers · asked by Arun 1 in Earth Sciences & Geology

2007-09-26 17:19:30 · 8 answers · asked by Anonymous in Biology

have u ever had any paranormal experiences , like seen ghosts, death people or angels? share your story

2007-09-26 17:17:37 · 19 answers · asked by Latina de Corazon 5 in Paranormal Phenomena

I know I need to assume n is odd, then show that there exists an integer k such that n^2 = 8k + 1

so assuming n is odd
i can say n=2j + 1 (where j is an integer)
n^2= (2j +1)^2


but i just can't figure out how to manipulate this in order to prove the conclusion! am i even starting right?

please help! :)

2007-09-26 17:16:13 · 2 answers · asked by Anonymous in Mathematics

just curious

2007-09-26 17:14:21 · 8 answers · asked by S i r i 1 in Medicine

A drilling rig, a km offshore, is to be connected by pipe to a refinery on shore, b km down the coast from the rig. If underwater pipe costs w dollars/km and land-based pipe costs l < w dollars/km, what values of x and y give the least expensive connection?

2007-09-26 17:11:50 · 1 answers · asked by SikhistOne 1 in Mathematics

CH3BR
CH3CL
CH3I
CH3F

2007-09-26 17:10:17 · 4 answers · asked by Lonely 2 in Chemistry

I converted 115 yd cubed to ft cubed and got 1380 ft cubed.

2007-09-26 17:10:03 · 3 answers · asked by Jen 4 in Mathematics

Mass of sample = 0.3g
mass of AgCl = 2.0g

Ag-(aq) + Cl-(aq) -----> AgCl(s)

2007-09-26 17:10:02 · 3 answers · asked by jkgregory10@sbcglobal.net 1 in Chemistry

What can u think of with high density.?
For school we have to think of things with high density i have thot of a few but what do u think of?
Like led, granite?

2007-09-26 16:59:32 · 6 answers · asked by Anonymous in Earth Sciences & Geology

A right circular cone has an altitude of 12 ft and a base radius of 6 ft. A second cone is inscribed in the first, with its vertex at the center of the base of the first cone and its base parallel to the base of the first cone. Find the dimensions of the cone of maximum volume that can be so inscribed.

2007-09-26 16:58:27 · 3 answers · asked by DaOne 1 in Mathematics

2007-09-26 16:57:42 · 3 answers · asked by Anonymous in Chemistry

2007-09-26 16:47:32 · 1 answers · asked by rustyjosh2 2 in Mathematics

What is the mass, in kilograms, of 14.0L of gasoline? (Assume that the density of gasoline is 0.680 g/cubic cm

2007-09-26 16:42:47 · 4 answers · asked by Anonymous in Mathematics

2007-09-26 16:41:59 · 1 answers · asked by zak 1 in Chemistry

0
∫ e^(3x) dx
-∞

Thanks for your help!

2007-09-26 16:38:16 · 4 answers · asked by mrbsktbll10234 1 in Mathematics

2007-09-26 16:37:33 · 11 answers · asked by . : : stephanie : : . 4 in Mathematics