Science & Mathematics - 13 January 2007

chemistry question

2007-01-13 02:20:34 · 6 answers · asked by martin 1 in Chemistry

Q: If y = ( cos x )^1/2 , show that 4y^3(d2y/dx2) + y^4 +1 = 0

Sorry that just now post the wrong question. This is the correct question, anyone can guide?

2007-01-13 02:17:11 · 3 answers · asked by happynanny03 1 in Mathematics

This is the question related to animal behaviour.

2007-01-13 02:17:07 · 8 answers · asked by bright 1 in Zoology

2007-01-13 02:15:32 · 5 answers · asked by SHARAD S 2 in Weather

2007-01-13 02:14:30 · 5 answers · asked by Anonymous in Mathematics

At about 4 weeks (before I had ANY idea I was pregnant) I took a capsule of pure MDMA. Any idea of the effects this may or may not have on my baby?

2007-01-13 02:14:24 · 6 answers · asked by academia 2 in Medicine

I particularly like cold days with summer sunshine when a strong wind blows in a lovely thunderstorm.

2007-01-13 02:12:58 · 21 answers · asked by laughingspam 3 in Weather

What is the value of the double integral?
Int between x and x/3, Int between 4sinx/2 and 0, dydx

2007-01-13 02:12:23 · 2 answers · asked by Anonymous in Mathematics

2007-01-13 02:11:27 · 6 answers · asked by Anonymous in Geography

seems that continent has given the world so many important technologies for the advancement of the modern world. I think lasers were invented in Nigeria, right?

2007-01-13 02:11:24 · 6 answers · asked by Anonymous in Engineering

2007-01-13 02:10:29 · 2 answers · asked by Anonymous in Physics

can anyone give me characteristics of order passireformes, salientia and chelonia? I also need characteristics for the following family: man, felidae, canidae, tudidae, testunidae and ranidae. can anyone also give me characteristics for the following genus. panthera, canis, turdus, gopherus and rana. lastly i need characteristics of the following species. Tigris, Leo, familiaris, sapiens, clamitans, migratorius, polyphemus and catesbeiana. you can send links on where i can find the characteristics of the said classifications please help me... this is our homework and i cant find the answers in text books. thanks

2007-01-13 02:10:15 · 4 answers · asked by lingnienshin 2 in Zoology

2007-01-13 02:03:05 · 11 answers · asked by Carol 2 in Mathematics

thhey grow in the u.s.a. wild.

2007-01-13 01:52:56 · 2 answers · asked by Debbie W 1 in Zoology

area of a triangle is = 1/2*base*altitude

2007-01-13 01:48:45 · 17 answers · asked by rishabh g 1 in Mathematics

2007-01-13 01:46:06 · 3 answers · asked by bpdii 1 in Astronomy & Space

2007-01-13 01:40:52 · 12 answers · asked by shivaji 1 in Botany

2007-01-13 01:36:30 · 4 answers · asked by eddy 1 in Zoology

2007-01-13 01:34:55 · 4 answers · asked by luizca_15 1 in Biology

2007-01-13 01:33:00 · 10 answers · asked by Anonymous in Geography

2007-01-13 01:32:51 · 7 answers · asked by mayuri k 1 in Engineering

2007-01-13 01:32:13 · 5 answers · asked by Zefram 2 in Engineering

2007-01-13 01:31:08 · 6 answers · asked by Anonymous in Mathematics

Live in Northern California . . . Is it cold here or what ? ! It's gets cold in other places, but we're just not used to this cold.

2007-01-13 01:30:16 · 8 answers · asked by onelight 5 in Weather

2007-01-13 01:27:03 · 10 answers · asked by Anonymous in Engineering

neutral atoms are different with that of mono-atomic ions.then what is their difference?

2007-01-13 01:25:13 · 4 answers · asked by Ninik 3 in Chemistry

2007-01-13 01:24:53 · 10 answers · asked by Galyose 1 in Mathematics

Stoichiometry?
i need help with this topic. i'm kinda new to this one. pls show some working as well so that i can learn from there thks.


1) how many moles are there in 8 grams of hydrogen gas?
2)how many moles are there in 8 grams of bromine liquid?
3)how many grams of neon have the same number of atoms as 8 grams of oxygen?

2007-01-13 01:18:56 · 3 answers · asked by Galyose 1 in Chemistry

2007-01-13 01:17:32 · 7 answers · asked by Galyose 1 in Physics

Can they be measured or weighted?

2007-01-13 01:16:30 · 15 answers · asked by Anonymous in Physics