Science & Mathematics - 1 February 2007

2007-02-01 08:25:49 · 4 answers · asked by a a 1 in Engineering

2007-02-01 08:25:36 · 4 answers · asked by Anonymous in Chemistry

how did darwin's work, reveal how science might be used to explain the past and the future of life on earth?

2007-02-01 08:22:50 · 4 answers · asked by Anonymous in Biology

2007-02-01 08:22:06 · 22 answers · asked by nanzz13 1 in Geography

what is the percent of 90 is 36, 20 is 4, 185 is 35, 128 is 24

2007-02-01 08:21:53 · 6 answers · asked by coolgirl 1 in Mathematics

2007-02-01 08:21:32 · 2 answers · asked by Anne 1 in Botany

2007-02-01 08:19:58 · 1 answers · asked by David N 1 in Mathematics

Yet another odd grignard reagent questions that I can't get through my head...

What Grignard reagent and carbonyl compound could be used to prepare 1-ethylcyclohexanol?

2007-02-01 08:19:52 · 3 answers · asked by jeanettervetr 2 in Chemistry

a garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 20m, and the area is 224m squared, find the lenghth of the other base.

2007-02-01 08:18:59 · 3 answers · asked by oklongbunch@sbcglobal.net 1 in Mathematics

2007-02-01 08:18:58 · 2 answers · asked by angel 1 in Chemistry

holographic, is anyone familiar with this theory & can you perhaps give me a clearer explination

2007-02-01 08:17:57 · 9 answers · asked by Notre1Dame 2 in Astronomy & Space

What would be the effect of raising the reaction temperature on the position of equilibrium of the reaction in part (a) if it was
(i)exothermic
(ii)endothermic.
Explain your reasoning

2007-02-01 08:17:29 · 3 answers · asked by simplicety 1 in Chemistry

we need to find the parametric equations for the surface 16x^2+9y^2+z^2=84

we currently have r(u,v)=(u,v, sqrt(84-16u^2-9v^2)), which is wrong. this only gives positive values. we need both positive and negative. we were told by our instructor that we need to use spherical coordinates, but haven't figured out how. i know this is a little vague but any help is appreciated. thanks in advance!

2007-02-01 08:16:16 · 2 answers · asked by joahann 1 in Mathematics

i'm thinkin' 9??

2007-02-01 08:16:10 · 5 answers · asked by [xo♥ox] 1 in Mathematics

I need an answer to the question above as soon as possible, it is for a project!

2007-02-01 08:14:04 · 5 answers · asked by krazy_lollipop12 1 in Other - Science

2007-02-01 08:13:48 · 2 answers · asked by Robert M 1 in Engineering

My dog ran out of the house and it took . one hour an a half later I caught the dog, at a park three miles East and four miles South of my house. What was the net distance traveled by my dog? What was my dog's average speed?

2007-02-01 08:13:15 · 3 answers · asked by nana g 1 in Physics

2007-02-01 08:11:52 · 25 answers · asked by logik_chic 1 in Mathematics

X/5 +3 = X/2 -7

2007-02-01 08:11:48 · 8 answers · asked by mg 1 in Mathematics

Assume that 4.20 x 106 kJ are needed to heat a swimming pool. If this energy is derived from the combustion of methane (CH4) at standard conditions (25 oC and 1 atm) what volume in liters of methane must be burned?




The heat of combustion of methane is 889.967 kJ/mol. The density of methane is 0.0680 kg/m3


Enter a numeric answer only. Do not enter units.

2007-02-01 08:11:38 · 1 answers · asked by Whatever 1 in Physics

homework help!
and please give me your sources.

thank you

2007-02-01 08:11:13 · 1 answers · asked by Anonymous in Mathematics

2007-02-01 08:10:43 · 2 answers · asked by reddy c 1 in Engineering

2007-02-01 08:09:35 · 2 answers · asked by goring 6 in Astronomy & Space

2007-02-01 08:06:29 · 10 answers · asked by Anonymous in Mathematics

i heard someone in the office talking about it

2007-02-01 08:06:19 · 1 answers · asked by aphotic nostrum 4 in Engineering

the micrometer is what part of a millimeter?

2007-02-01 08:05:33 · 2 answers · asked by flaca 3 in Physics

2007-02-01 08:04:13 · 3 answers · asked by yxtimxy 1 in Earth Sciences & Geology

2007-02-01 08:03:20 · 10 answers · asked by Anonymous in Astronomy & Space

help me balance this equation
HCL + NaCO3 forms NaCL + CO2 + H2O
please explain the answer

2007-02-01 08:03:05 · 2 answers · asked by Anonymous in Chemistry

2007-02-01 08:02:04 · 16 answers · asked by Notre1Dame 2 in Astronomy & Space