Science & Mathematics - 30 October 2006

Full details on the importance opf group 2 elements and compounds

2006-10-30 20:37:08 · 6 answers · asked by bestman agu 1 in Chemistry

the plane tangent to the surface x^2 + y^2 = 25 at the point (3,4,0)
is what ?

2006-10-30 20:34:10 · 5 answers · asked by Anonymous in Mathematics

2006-10-30 20:28:52 · 11 answers · asked by Sachdeva 1 in Earth Sciences & Geology

A clock gains 4 minutes per hour. One day it is set to the correct time at 9:00 a.m. What is the correct time when the clock shows 1:00 p.m that afternoon?

2006-10-30 20:27:46 · 13 answers · asked by Arnav 3 in Mathematics

2006-10-30 20:27:24 · 13 answers · asked by childlikeempress 4 in Geography

A hardware store sells numerals to people who make new houses but it has only got the numbers 3,5 and 8. How many different house numbers not more than 3 digits can be made from these numbers. The numbers can be repeated.

2006-10-30 20:26:10 · 6 answers · asked by Arnav 3 in Mathematics

2006-10-30 20:24:43 · 8 answers · asked by Sexy little chikka 1 in Biology

Peter and David live 36 km apart. They leave their homes at 1 PM riding bicycles towards each other. Peter averages 8 km/h and David travels 10 km/h. What time do they meet at?

2006-10-30 20:23:29 · 5 answers · asked by Arnav 3 in Mathematics

2006-10-30 20:21:11 · 9 answers · asked by Anonymous in Zoology

consider a situation where a rod of 1 sqmts is kept on the top of a building. its a stromy day with 10 lightnings bolt per second. WHAT IS THE PROBABILITY OF THE LIGHTNING BOLT HITTING THE THE ROD.

2006-10-30 20:19:54 · 7 answers · asked by srikanta 2 in Mathematics

Potassium(K) + Iodine(I) = PotassiumIodide(KI)
BUT I am asked to explain and illustrate using a diagram.
Normally, when i use the method that i understand(valency), i get KзI instead of KI. I need explanation. Help!!

2006-10-30 20:17:08 · 6 answers · asked by xx 3 in Chemistry

How come so many believers in extra terrestrial life, not including microscopic lifeforms, think it's enough evidence to claim the universe is large so ETs must therefor exist? I admit I'm no expert on logic, but I don't see the validation in the reasoning as presented. And why is it arrogant to doubt their contention?

2006-10-30 20:08:16 · 7 answers · asked by Anonymous in Astronomy & Space

I get frustrated with questions from people that are in the old fashioned imperial measurements, especially when most countries are taught the metric system .
e.g 1kg = 1 litre of water, 1000metres = 1 kilometre

2006-10-30 20:07:04 · 12 answers · asked by Anonymous in Mathematics

Okay,
I need the shapes of the followind molecules

Oxygen
Hydrogen
Nitrogen
Water
Methaine
Carbondioxide
Ammonia

2006-10-30 20:06:51 · 3 answers · asked by xx 3 in Chemistry

2006-10-30 20:06:37 · 2 answers · asked by Lutfor 3 in Biology

I get frustrated with questions from people that are in the old fashioned imperial measurements, especially when most countries are taught the metric system .
e.g 1kg = 1 litre of water, 1000metres = 1 kilometre

2006-10-30 20:05:57 · 9 answers · asked by Anonymous in Mathematics

2006-10-30 20:04:56 · 13 answers · asked by eagle4536 1 in Chemistry

2006-10-30 20:02:20 · 21 answers · asked by childlikeempress 4 in Mathematics

i am interesting about space and real aliens stores

2006-10-30 19:59:48 · 4 answers · asked by jesuswholemylife2020 1 in Astronomy & Space

Just felt like asking a random question hehe ^_^

2006-10-30 19:58:39 · 24 answers · asked by childlikeempress 4 in Mathematics

2006-10-30 19:55:54 · 13 answers · asked by childlikeempress 4 in Earth Sciences & Geology

Let's say for example someone was in a car accident or whatever, and the car bursted into flames. Why would this happen? How would this happen? Too much heat? In movies you see cars exploding but I think everyone knows they tend to bend the truth a little in movies to make things more interesting but is this actually possible? If so why would it explode? I would assume it has something to do with the oil, gasoline and/or heat. Can someone who knows cars go into specific detail about the parts of the cars that would actually make these things happen?

2006-10-30 19:54:10 · 12 answers · asked by Katie W 3 in Physics

The search for life on other planet is going on.So,suppose if there is ny life other planet,how much they can be intelligent? And what should be the body structure of a intelligent creature?Like humans?! And if they r intelligent;aren't they also trying to contact with us?

2006-10-30 19:48:57 · 7 answers · asked by Ya 1 in Astronomy & Space

What a characteristic is = What a characteristic has
What a character is ≠ What a character has
A character has a characteristic.

What an equivalence is = What an equivalence has
What a difference is ≠ What a difference has
A difference has an equivalence in itself.

What an invariant is = What an invariant has
What a variant is ≠ What a variant has
A variant has invariants.

2006-10-30 19:47:37 · 7 answers · asked by The Knowledge Server 1 in Other - Science

2006-10-30 19:34:59 · 8 answers · asked by ramesh_huria 1 in Biology

Is there anyway you can tell if the stone is real without having a daimond tester?

2006-10-30 19:34:52 · 5 answers · asked by hiba808 2 in Earth Sciences & Geology

2006-10-30 19:31:22 · 17 answers · asked by ramesh_huria 1 in Medicine

We believe in scientific theory that since light have finite speed, the stars that we see are of the past.

Imagine a star that emits light radiation of different frequency every 1 year. There are number of guys, the first one stationed on the star and the others who are at increasing constant intervals of 1 light year with one another.

At any given time, each of these guys will report different color of these stars. esp. For guy1 star may be green, guy2 red, guy3 white, guy4 blue and so on...

Supposing there is a person of almost infinite resource who can simultaneously see what each guys can see at the same time, what exactly (which color of star) is this person seeing.

On bigger scale, a source or power which can see the past, present, future at the same time, what exactly is he seeing. What is there in his consciousness? . Can there be a unified theory to club the events of past, present and future into a single resultant set and to split it back

2006-10-30 19:26:54 · 4 answers · asked by Anonymous in Physics

2006-10-30 19:26:01 · 7 answers · asked by Arumugam 1 in Engineering

I don't understand the -2 ≤x≤ 2 part is this question:
For each of the following equations set up and complete a table of values for -2 ≤x≤ 2.
a, y=x+1 (Just as an example)

Thanks. : )

2006-10-30 19:21:36 · 3 answers · asked by mysterious_purple_haze 3 in Mathematics