Science & Mathematics - 9 January 2007

Just wondering. I need to know this for a chemistry project and I want to make sure that there is no major difference so I don't blow myself up or something.

2007-01-09 17:02:15 · 3 answers · asked by blakeh210 2 in Chemistry

2007-01-09 17:00:15 · 5 answers · asked by vinitha a 1 in Astronomy & Space

periodic table soduim

2007-01-09 16:58:09 · 15 answers · asked by sarahmejia 1 in Chemistry

2007-01-09 16:53:29 · 13 answers · asked by aperfectpeach 2 in Mathematics

2007-01-09 16:52:54 · 2 answers · asked by Vincent K 2 in Mathematics

"explosion" type of situation that is created. Why is this? Does this have to do with the heat of fusion?

For example, plunging a large amount of ice into a boiler.

2007-01-09 16:52:50 · 7 answers · asked by amer174797 1 in Physics

2007-01-09 16:52:46 · 5 answers · asked by correctlyanswered ... 1 in Geography

plz show step by step how to do thx


the proportion x+4/3 = 7/x has the solution or solutions?


the LCM of 8ab and 12a^2 is?


the rational expression 5x/x^2-9 is undifined only when x=what?


if two variables are related inversly then as one variable dereases,the other variable does what?


in the proportion 3/x=7/x+4 the cross the production are?

2007-01-09 16:52:12 · 2 answers · asked by jrrkidd 1 in Mathematics

2007-01-09 16:51:43 · 10 answers · asked by aperfectpeach 2 in Mathematics

do u have know anything that can make me understand chemistry better, or atleast make it easier or the like.. i really dont get it. and im starting yr 12 this year.

2007-01-09 16:51:07 · 3 answers · asked by Anonymous in Chemistry

1.) Identify which of the following are examples of chemical
equilibrium:

a.) 2NO2 <==> N2O4

b.) 2H2O <==> 2H2 + O2

c.) N2 + 3H2 <==> 2NH3 + heat

d.) H2 + I2 <==> 2HI

2007-01-09 16:50:18 · 7 answers · asked by Pearl 2 in Chemistry

I took an introductory calculus class last semester and we got up to the point of integration. We just covered basic integration but didn't get to integration by parts. I know that you can use integration to determine the area of a curve or the length of a line etc however we didn't cover higher order integrals.

What information does solving higher order integrals give you? What would be the use for them?

2007-01-09 16:46:56 · 3 answers · asked by achillesfear 3 in Mathematics

as in Euler's Number. Is it pronounced oiler or yooler?

2007-01-09 16:46:21 · 17 answers · asked by Chris 2 in Mathematics

Can someone help me with an 8th grade science problem...?
the question is:
a balloon with the mass of 0.020 kg is charged by rubbing and then is stuck to the ceiling. if the acceleration of gravity is 9.8 m/s squared*, what is the electrical force on the balloon?

*i meant it to be 9.8 m/s to the second power.im stil confused with squared and cubed...yea..so can you help me out with this?

it`s due 2maro.
yuck...homework sux...

thanx in advanced to those of you who do help me out.
*.♥.*.♥.*.♥.*

2007-01-09 16:45:53 · 3 answers · asked by Anonymous in Other - Science

Ok, it's 12:45 a.m and I was very sick, I just couldnt take it and I drank 9 tablets of 500mg extra strenght of tylenol all at once, what can happen to me?

2007-01-09 16:45:37 · 19 answers · asked by Anonymous in Medicine

2007-01-09 16:43:19 · 4 answers · asked by s t 1 in Astronomy & Space

2007-01-09 16:42:19 · 6 answers · asked by Anonymous in Engineering

a 45.0 kg stands on a 150 kg plank where the plank is originally at rest on a ice surface.
the ice surface is frictionless.
the girl walks constantly 1.5 m/s relative to the plank

2007-01-09 16:41:09 · 6 answers · asked by Tuan-Minh N 1 in Physics

1.) Identify which of the following are examples of chemical
equilibrium:

a.) 2NO2 <==> N2O4

b.) 2H2O <==> 2H2 + O2

c.) N2 + 3H2 <==> 2NH3 + heat

d.) H2 + I2 <==> 2HI

2007-01-09 16:39:48 · 2 answers · asked by Pearl 2 in Chemistry

Tell me when, where, why, how?

2007-01-09 16:39:26 · 5 answers · asked by Kate! 3 in Earth Sciences & Geology

1. wats the relationship between the angle of incidence and the angle of reflection in each case

2. at what angle of incidence do the incident ray and reflected ray travel along the same path

3. if the angle of the incidence is doubled, what happens to the angle of reflection and why

plz dont flame me

2007-01-09 16:38:13 · 2 answers · asked by Anonymous in Physics

Prove tan θ / sin θ = cos θ/ 1 – sin^2θ

2007-01-09 16:37:02 · 11 answers · asked by Anonymous in Mathematics

I think the latter.

If I am correct (about in what direction the earth revolves on its axis) then would I be correct in saying that as I fly west, and earth is revolving in the opposite direction, that I will pass thru time zones VERY quickly.

Anyone in the science field out there who can help me with this?

Thank you!

2007-01-09 16:35:32 · 8 answers · asked by Dune 2 in Astronomy & Space

1900s saw world war 1 with primitive weapons world war two with atom bombs and 1969 with a manned spacecraft landing on the moon!! What was man doing before that on earth for 10 million years? Discovery Channel says that MJ2 crash a closely guarded secret at the Pentagon gave knowledge to the Americans and they capitalise on it and sell obselete technology to the world which suits them and constantly remains ahead of the rest of the world!! Could this be true that the space crafts actually crashed and this actually happened?
Why don't space crafts crash in other countries though I have personally seen (along with a whole village population and my family with one person from the army, one a scientist from 3M USA and an Economist from Oregon University and me from London University- in short -normal people!!) something from a distance in 1972 which could be termed as UFO and the next days national papers had them on the head lines with photographs of capsized cars & scooters on trees!!

2007-01-09 16:34:41 · 5 answers · asked by Prophet of disaster 1 in Astronomy & Space

Are they RNA strands, or DNA single strands, or what?

2007-01-09 16:32:45 · 6 answers · asked by Anonymous in Biology

2007-01-09 16:32:45 · 10 answers · asked by afaf b 1 in Physics

2007-01-09 16:32:38 · 14 answers · asked by Anonymous in Paranormal Phenomena

2007-01-09 16:31:14 · 2 answers · asked by Anonymous in Mathematics

2007-01-09 16:30:49 · 7 answers · asked by 3.141592653589793238462643383279 3 in Engineering

I was wondering particularly about equines.

2007-01-09 16:29:55 · 5 answers · asked by Manwe S 1 in Zoology