Science & Mathematics - 12 December 2006

A boy who had discovered that three 3/4-inch marbles fitted snugly into bottom of a cylindrical jar, dropped in a fourth on top of the three and poured water enough into the jar to just cover them. How much water did he use?

2006-12-12 21:19:23 · 7 answers · asked by Anonymous in Mathematics

i need to know how to find the integral of (1/e^x)

more specifically ∫1/(e^(x/kt)+1) with respect to x.

thanks a bundle. it's been a while since my calc classes, and integrals have popped up on my p-chem problems.

2006-12-12 21:18:48 · 2 answers · asked by makie 4 in Mathematics

2006-12-12 21:18:00 · 4 answers · asked by Anonymous in Mathematics

0.9 0.28 6/5 -16/65
0.1 0.96 -1/5 63/65

2006-12-12 21:17:05 · 2 answers · asked by Anonymous in Mathematics

You are to invent a water purifier since you are not allowed to go out of the cave because if you do you will be exposed to radioactive materials brought by the explosion of a big nuclear plant..So what will you do to purify the water in the cave or tunnel?

2006-12-12 21:10:24 · 4 answers · asked by kirsten jade 1 in Other - Science

R+CAT+SHOE-RAT+SUN-CHOSE+MOON+I-NOON+GOAL+T-GOAT-U+E ????? Just One Word Find it

2006-12-12 21:04:33 · 18 answers · asked by ASWHWANI RANA 1 in Other - Science

Hello all. I have a little dispute with my mother in law about the antibiotics my partner is taking.
He is on Amoxicillin (1 tablet 3 times a day) and Metronidazole (1 tablet 3 times a day) for a tooth that got infected.
For various reasons he takes some other tablets (Garbantina) 3 times a day at 9am, 2pm and 7pm so I've naturally been giving him his antibiotics at the same times so it doesn't get confusing whether he has taken the right tablets at the right times.
She keeps saying that he should be taking the antibiotics much more spread out and tut tutting at me!

I've read the leaflets that come with the medicine boxes but they don't state anything about it, and before anyone tells me this, some of his drugs he has to take with food which he has been doing.

Thanks for your help!

2006-12-12 21:04:07 · 12 answers · asked by Kate J 2 in Medicine

We have all seen the moving pictures of the living sperm swimming to fertilize the egg in the womb. We have not observed any life in the egg until the sperm brings life into it.

2006-12-12 20:57:19 · 9 answers · asked by Saul T 1 in Biology

Comment: The other two dimentions must be reduced same ratio that the height.

2006-12-12 20:56:05 · 3 answers · asked by Luiz B 3 in Mathematics

significance of metamorphosis in butterfly

2006-12-12 20:55:22 · 2 answers · asked by mukunth s 1 in Zoology

2006-12-12 20:48:54 · 7 answers · asked by raj.aryansrk 1 in Geography

What is the 10th term of 10th term of (X-2Y)^20

2006-12-12 20:48:50 · 5 answers · asked by Anonymous in Mathematics

2006-12-12 20:44:21 · 3 answers · asked by kawaiikifu 1 in Mathematics

we have learnt that everything in the universe are made up of matter.are our human cells which contain mitochondria,nucleous,ER,golgi bodies,cytoplasm made up of atoms

2006-12-12 20:41:33 · 17 answers · asked by Anonymous in Biology

Hello.
A mixture of C2H2 and excess H2 in a 1.0L vessel exerts a pressure of 52.0 kPa.
After a spark initiates the rxn: C2H2 + 2H2 --> C2H6
and the products cool to the same temperature as that of the initial mixture, the final pressure is 34.0 kPa.
The partial pressure of C2H2 in the mixture of C2H2 and H2 was???
can someone help me???

2006-12-12 20:39:34 · 1 answers · asked by lisacan 2 in Chemistry

2006-12-12 20:34:50 · 7 answers · asked by franchise 1 in Mathematics

What perdictions of the future do you have?Do you look forward to the events and in what time frame do you expect fullfillment.

2006-12-12 20:32:31 · 3 answers · asked by Anonymous in Physics

my man utd season tickets have just been taken. Nothing good has come from it. Why not? What have i done wrong.

2006-12-12 20:31:35 · 3 answers · asked by pamlajugs 1 in Weather

2006-12-12 20:27:05 · 13 answers · asked by Tommy K 1 in Zoology

2006-12-12 20:26:15 · 35 answers · asked by Dawn F 1 in Geography

2006-12-12 20:22:04 · 8 answers · asked by Anonymous in Mathematics

How does nerve conduction work. I know it's all about ions travelling through membranes but which ones. Also, (part of question), how do ionic gateways work?

2006-12-12 20:17:41 · 2 answers · asked by roly 3 in Biology

2006-12-12 20:17:14 · 4 answers · asked by agus s 1 in Mathematics

2006-12-12 20:12:38 · 14 answers · asked by arjun_redhands 1 in Engineering

2006-12-12 20:12:03 · 3 answers · asked by Anonymous in Chemistry

2006-12-12 20:12:02 · 4 answers · asked by Anonymous in Physics

My son wants to grow some crystals and I am keen to encourage him.

When I was a lad you could buy Cobalt Chloride from the chemist - these days they look at you as if you have asked for some moon dust.

I don't want to go buy a kit - I want to show him it is pretty simple. Where can I buy compounds for crystal growing here in the UK?

2006-12-12 20:10:50 · 7 answers · asked by Richard A 1 in Chemistry

1 + sec w / tan w + sin w = csc w

I made an attempt to solve this problem, but I can't solve it. Please help me!

2006-12-12 20:10:12 · 3 answers · asked by keenan93312 1 in Mathematics

I want to know the genetics for alzheimer's disease with diagrams, i.e. how the changes occur in genes due to this disease in .pdf format

2006-12-12 20:08:55 · 3 answers · asked by kumar 2 in Biology

one time i was at my chruchs holloween party i was the last person to guess how many candies ar in a jar and i picked the exacite number, and then i when i go to bed and i dream of what people will do in the morning whats wrong with me and i always get thing like this right. help me

2006-12-12 20:03:54 · 6 answers · asked by niah 1 in Physics