Science & Mathematics - 15 December 2006

2006-12-15 08:45:10 · 3 answers · asked by RJG 2 in Astronomy & Space

Can you just sorta explain some key facts to trigonometry or like some key equations to know and just anything...thanx a bunch in advance

2006-12-15 08:42:22 · 4 answers · asked by sofitch420 2 in Mathematics

I think it is two triangles and a square or just two triangles and since these both equal up to squares, then how come we have the one half?

2006-12-15 08:41:22 · 9 answers · asked by sherlogenius 2 in Mathematics

2006-12-15 08:41:10 · 16 answers · asked by Anonymous in Biology

lets say you have 3 ships being separated by 5 lightminutes each, forming a triangle. all three ships maintain their distances and travel same course with half the speed of light in a very light nebular (for optical reasons)
Now Ship A fires a 1 minute laserbeam on Ship B, destroying it.
Ship C takes photos.. what will these photos tell ?
What do they exactly observe, why and when ?
(This is NOT a homework question) :P

2006-12-15 08:36:44 · 4 answers · asked by blondnirvana 5 in Astronomy & Space

I know .......it sounds naive :)

2006-12-15 08:34:00 · 6 answers · asked by Anonymous in Biology

2006-12-15 08:32:58 · 4 answers · asked by andro 1 in Mathematics

2006-12-15 08:30:28 · 9 answers · asked by Lemark 1 in Earth Sciences & Geology

2006-12-15 08:30:23 · 2 answers · asked by seyyedkh 1 in Engineering

2006-12-15 08:28:26 · 22 answers · asked by Anonymous in Biology

Anna can type 990 words in 10 minutes. How many words can she type per minute?

2006-12-15 08:26:48 · 7 answers · asked by ♥ 6 in Mathematics

1) Ca(OH)2 + H2+→ Ca2+ + 2 H2O
2) CaCO3 + 2 H+→ Ca2+ + CO2 + H2O
3) 4 Fe2+ + O2 + 4 H2O → 2 Fe2O3 + 8 H+
4) Ca(OH)2 + 2 H2O → CaO22– + 2 H3O+

2006-12-15 08:22:59 · 5 answers · asked by Bill J 1 in Chemistry

2006-12-15 08:21:53 · 5 answers · asked by Laris 1 in Physics

this is my science fair project...however i need to know to some extent "why" i know about salinity and buoyancy, and i need to write a paper on that....what could i do?


please help!
thanks

2006-12-15 08:18:35 · 5 answers · asked by Anonymous in Chemistry

2006-12-15 08:15:42 · 18 answers · asked by robert k 2 in Mathematics

if the ph of a solution is 1.50, what is the hydronium concentration?
1. 6.7 x 10^-3 M (exponent neg. 3)
2. 1.5 x 10^-14 M (exponent neg. 14)
3. 0.032 M
4. 0.15 M

2006-12-15 08:13:50 · 5 answers · asked by barry b 1 in Chemistry

one week extra

2006-12-15 08:13:43 · 5 answers · asked by Anonymous in Biology

I know that as temperature increases the resistance of bulb will also increase. I don't know how to estimate the temperature of the filament for a given resistance.

Note: I am looking for a relationship something like R is proportional to T or R is propotional to T^2 or something like that....

Please help!

2006-12-15 08:11:30 · 3 answers · asked by blue_knight 2 in Physics

2006-12-15 08:11:11 · 5 answers · asked by own 1 in Weather

2006-12-15 08:10:28 · 1 answers · asked by buzz 1 in Mathematics

2006-12-15 08:09:07 · 7 answers · asked by sabseg50 1 in Mathematics

How many seven letter words can be formed using the letters of the word "BENZENE"?

2006-12-15 08:07:44 · 6 answers · asked by Shanu A 1 in Mathematics

2006-12-15 08:02:56 · 9 answers · asked by Anonymous in Mathematics

Really, I am not sure! Can chickens cough?

2006-12-15 08:02:18 · 15 answers · asked by Anonymous in Zoology

2006-12-15 08:01:24 · 8 answers · asked by Anonymous in Physics

2006-12-15 08:00:26 · 2 answers · asked by Anonymous in Biology

2006-12-15 07:59:42 · 15 answers · asked by Courtney(: 3 in Astronomy & Space

2006-12-15 07:53:49 · 7 answers · asked by Anonymous in Zoology

40% of students are over 25. If 5 students are randomly selected, what is the probability that exactly 2 will be over 25?

a. .3456

b. .2212

c. .3975

d. .3633

How did you get this answer?

2006-12-15 07:51:11 · 3 answers · asked by mrkittypong 5 in Mathematics

2006-12-15 07:50:22 · 8 answers · asked by PAUL M 1 in Weather