Science & Mathematics - 26 September 2006

Calculate the final temp of 245 ml of water initially at 32 degrees C upon absorption of 17 Kj of heat. and explain how you did it please! Thanks

2006-09-26 06:22:45 · 5 answers · asked by Angel Eve 6 in Chemistry

2006-09-26 06:22:17 · 11 answers · asked by Anonymous in Other - Science

How many electrons are transfered from a magnesium atom to each bromine atom in the formation of magnesium bromide?

2006-09-26 06:20:52 · 3 answers · asked by k 8710 2 in Chemistry

2006-09-26 06:20:50 · 3 answers · asked by f_gary_lower 1 in Biology

You know, for the chemistry and calculus classes you had to take in 1st or second year college? Or would it be better to get a high school guide for simplicity? I'd like to get one that spells everything out in the most basic terms and then gives "whys" and practical examples. Any suggestions of stuff that helped YOU?! Thanks!

2006-09-26 06:14:36 · 5 answers · asked by JillyJilly2x4 2 in Chemistry

2006-09-26 06:14:22 · 9 answers · asked by Swati a 1 in Mathematics

2006-09-26 06:14:01 · 15 answers · asked by Raghupathy C 1 in Physics

hey guys i know this is super easy but i havent done in such a long time i forgot
-2 1/2 converted to an improper fraction is it -5/2?

2006-09-26 06:11:13 · 10 answers · asked by Fries 4 in Mathematics

why did mendel's cross of purebred and short pea plants result in only tall plants?

2006-09-26 06:11:02 · 5 answers · asked by brandy 2 in Biology

I need to know this because my bug collection its my little girls for school thanks

2006-09-26 06:08:40 · 3 answers · asked by Anonymous in Biology

They are brown, between 2 and 6 inches in diameter, and between 3 and 6 inches tall.

2006-09-26 06:01:35 · 13 answers · asked by Anonymous in Botany

If a black hole can suck everything in and nothing can escape from it, does it mean it has no inside as it pulls everything in? Also, doesn't gravity get crushed by it and what is it that holds the black hole together so it doesnt suck itself in?

2006-09-26 05:58:46 · 18 answers · asked by Mahmood C 1 in Astronomy & Space

2006-09-26 05:58:31 · 3 answers · asked by kalyan 1 in Engineering

it's light in day and dark at night

2006-09-26 05:55:43 · 18 answers · asked by amymatteo 1 in Astronomy & Space

I'm not sure if this question belongs in biology, psychology, mysteries of the universe or what, but it is meant as a serious question, so serious answers please.

It concerns something we ALL do at one time or another: flatulate (in layman's terms: fart). And though I can't prove it, I believe it is absolutlely true that while people notice some of their methane may in fact be rank, the perpetrator believes the smell is either actually GOOD (as in my case, or I think so anyway), or at the very least, our own slices of natural cheese do NOT stink as bad as another person's -- even a loved one's. Why is this? There must be a reason.

I can cut a silent fart in a crowded elevator, blame it on someone else if a scene is created, and savor the diffused aftermath for a full minute sometimes. But let someone else do that and I am livid. Their gas really and truly is NASTY -- unlike mine. I am CERTAIN I'm not the only one like this. Truly, I believe everyone is.

But WHY?

2006-09-26 05:55:28 · 9 answers · asked by Anonymous in Biology

2006-09-26 05:54:47 · 29 answers · asked by Anonymous in Zoology

2006-09-26 05:54:11 · 13 answers · asked by Anonymous in Zoology

2006-09-26 05:53:40 · 12 answers · asked by Anonymous in Botany

2006-09-26 05:46:49 · 3 answers · asked by beauty student 1 in Biology

2006-09-26 05:45:35 · 5 answers · asked by Anonymous in Physics

2006-09-26 05:44:52 · 14 answers · asked by little 1 in Medicine

2006-09-26 05:42:58 · 40 answers · asked by julio a 1 in Astronomy & Space

Doing a project on space & the book October Sky

2006-09-26 05:42:13 · 14 answers · asked by amethystdragonfaerie 2 in Astronomy & Space

2006-09-26 05:41:41 · 7 answers · asked by little 1 in Medicine

2006-09-26 05:39:39 · 7 answers · asked by praveena k 1 in Mathematics

Do alien like to date human???

2006-09-26 05:38:46 · 17 answers · asked by vishal 1 in Astronomy & Space

2006-09-26 05:35:39 · 7 answers · asked by thiru s 1 in Physics

Method 1:
Now cos²x = (cosx)², and integrating normally I get (-cos³x)/(3sinx).

Method 2:
Using identities:
cos²x + sin²x = 1 and
cos²x - sin²x = cos(2x) we get
2cos²x = 1 + cos (2x) and
cos²x = 1/2 (1+cos(2x))
which upon integrating gives x/2 - (sin(2x))/4.

These two answers are clearly different, but why?
I think I must have made some silly error the first way, but I don't know where.

2006-09-26 05:29:00 · 3 answers · asked by Anonymous in Mathematics

9^x = 3^x+3

remember without using logs please

2006-09-26 05:26:51 · 3 answers · asked by Jamie B 1 in Mathematics

2006-09-26 05:26:37 · 5 answers · asked by beauty student 1 in Biology