Science & Mathematics - 26 August 2007

perferably download able or on the internet.

2007-08-26 11:44:04 · 2 answers · asked by i got more beef than cattle 1 in Other - Science

I used the Celestia program to fly along with Cassini in it's many orbits and close passes and was amazed that we could engineer such a thing. I wondered if it did like Voyager: arrive at the planet and hit its trajectory without any correction necessary. This mission, of course, is immensely more complex.

2007-08-26 11:38:46 · 3 answers · asked by Brant 7 in Astronomy & Space

About an hour and half ago- my husband, mum and dad saw bright orange flying objects-moving slowly over the sky in groups of 10-15. We watched in shock and we must have seen about 50 plus- the only way i could describe it was it looked like an invasion. It wasnt a plane, ballon etc. They were quiet and moved slowly. It lasted from 21:00 til about 22:00. What were these strange objects and has anyone else seen this in Essex England??? Other people must have seen it.

2007-08-26 11:38:45 · 6 answers · asked by Anonymous in Astronomy & Space

It would be helpful if you gave me the site or sorce and some pics of it.thanx much

2007-08-26 11:37:26 · 1 answers · asked by Anonymous in Zoology

I really wish I could do my project on perpetual motion but the thing is I do not know how to experiment with it. You have to have 10 trials of one experiment and I just do not know how to make it work. I AM NOT TRYING TO INVENT A PERPETUAL MOTION MACHINE. I just want to create an experiment showing why it will not work. Or something along those lines.

2007-08-26 11:34:49 · 10 answers · asked by pgarg3 2 in Other - Science

Problem # 1:
A full propane gas tank weighs 32 pounds. After 3/4 of the gas is used up, the tank and the remaining gas weighs 14 lbs. The weight of the tank when empty is_____ lbs.

Problem # 2 :

just imagine a square window, u know, with all the bars in between, to make the window look like four little squares, the regular kind of window. remove two lines only, to leave only two squares. i have tried everything, its really hard.

Problem # 3:
(imagine a circle, its a regular circle, not an oval) Draw only three lines to divide the circle in to eight(equal, i think) sections.
thank you so much!!

2007-08-26 11:30:46 · 9 answers · asked by kellybabeyyx5 1 in Mathematics

2007-08-26 11:29:07 · 2 answers · asked by Anonymous in Zoology

H2O2 and 2OH-

1. how are these species different

2007-08-26 11:29:01 · 2 answers · asked by ThePrince 2 in Chemistry

I know it sounds stupid and farfetchd but since the ice glaciers are melting, would it be possible to create a freeze ray or a something that could refreeze the melting ice to restore the effects?

2007-08-26 11:18:27 · 9 answers · asked by L2theL 1 in Earth Sciences & Geology

which metric unit and prefix would be the most convenient to measure each of the following?
a.the diameter of a giant sequoia tree
b.the diameter of a human hair
c.time necessary to blink your eye
d.mass of gasoline in a gallon
e.mass of cold virus
f.amount of aspirin in a tablet
g.mass of concrete to pave a parking lot



thanks guys i owe you and if you could explain

2007-08-26 11:12:44 · 8 answers · asked by leslie g 3 in Physics

without having to freeze the container it is in.

2007-08-26 11:11:12 · 3 answers · asked by lyzz62 1 in Chemistry

2007-08-26 11:07:52 · 3 answers · asked by darkling 5 in Weather

ok the question asks :
Suppose that 0 < t < pi/2, and csc t = 4. Find the values of the trigonometric functions sin(t), cos(t) and tan(t).

how am i supposed to do that with just cosecant?

2007-08-26 11:05:57 · 3 answers · asked by webshell46 1 in Mathematics

2007-08-26 11:05:48 · 5 answers · asked by Al 2 in Physics

2S2O3 2- ---> S4O62- + 2e-
Is the 2S2O32- oxidized or reduced?

I think its oxidized... any second opinions?
thanks

2007-08-26 11:05:20 · 2 answers · asked by Anonymous in Chemistry

a) Fe2O3(s) + Mg(s) -> MgO(s) + Fe(s)
b) AlCl3(s) + H2O(L) -> Al(OH)3(s)+ HNO3(g)
c) NaNO3 + H2SO4(L) -> Na2SO4+ HNO3 (g)
d) NiCO3(s) + HNO3(aq) -> Ni(NO3)(aq) + CO2(g) + H2O(l)]

Can someone explain how to balance these equations?

2007-08-26 11:04:19 · 2 answers · asked by Gamer G 4 in Chemistry

a roof tile falls from rest from the top of a building. an observer inside the building notices it takes 0.20 seconds for the tile to pass her window. whose height ius 1.6m. how far above the top of this window is the roof?

If anyone could help me, thanks alot! I am really confused what to do

2007-08-26 11:03:37 · 2 answers · asked by Takkun 1 in Physics

Ideas are paper&pulp, powerplants, chemical. What else? and what country uses it in industry the most?

2007-08-26 10:58:02 · 5 answers · asked by DH 1 in Engineering

I have a math final that I have to pass. I need help with trig!!

2007-08-26 10:57:21 · 2 answers · asked by Shea W 1 in Mathematics

H2CO3 yeild (H^+)+(HCO3^-)

1. what is the chemical formulas of compunds?

2. what is the chemical formulas of ions?

3. what are the products of the reaction?

2007-08-26 10:56:56 · 1 answers · asked by ThePrince 2 in Chemistry

please help

2007-08-26 10:56:20 · 4 answers · asked by CaniacBuff2 1 in Mathematics

in the end the parts it should all look like a elephant
if you have done one how did u do it

2007-08-26 10:51:28 · 1 answers · asked by Anonymous in Mathematics

I'm looking for a good quality microscope to use at home for investigating things, inspecting edges for tool wear, etc. I want good quality - good image quality and reliability, but I don't need anything industrial strength with lots of fancy features. I'd like to spend no more than $200, but but I might be willing to go higher.

2007-08-26 10:47:53 · 3 answers · asked by pollux 4 in Other - Science

given an equilateral triangle construct a square haveing equal area - how do i go about doing this?

2007-08-26 10:44:12 · 3 answers · asked by Anonymous in Mathematics

2007-08-26 10:44:00 · 3 answers · asked by coolguy32 1 in Mathematics

Anyone know this? Or have a clue? Please!

2007-08-26 10:39:57 · 1 answers · asked by YouThink 1 in Chemistry

How many neutrons are in the isotope Kr8436?

2007-08-26 10:37:08 · 3 answers · asked by 1337Haxor 2 in Chemistry

do u know when and do u need a telescope

2007-08-26 10:37:02 · 6 answers · asked by Anonymous in Astronomy & Space

I can't remember whether it is the kernel, or what.

2007-08-26 10:35:41 · 5 answers · asked by Amy V 1 in Mathematics

here is an example
http://billstudio.goowen.com/scimage/images/M31_Andromeda_Galaxy.jpg

http://images.astronet.ru/pubd/2000/12/19/0001162689/sombrero_vlt.jpg

2007-08-26 10:35:32 · 9 answers · asked by MedTq367 6 in Astronomy & Space