Science & Mathematics - 8 January 2007

Just curious to know what does it mean to have achromatic scopes versus perhaps "un-acromatic" or whatever the opposite is, which one is better?

And what does the terminology of being achromatic mean in practicality.

Thanks

2007-01-08 07:24:39 · 4 answers · asked by planck12 1 in Astronomy & Space

2007-01-08 07:24:26 · 6 answers · asked by wabbitslay3r 1 in Chemistry

2007-01-08 07:23:30 · 7 answers · asked by Anonymous in Biology

2007-01-08 07:22:24 · 1 answers · asked by oklahomacuttie 1 in Medicine

Not without vespa!

2007-01-08 07:21:47 · 6 answers · asked by Anonymous in Astronomy & Space

2007-01-08 07:20:14 · 6 answers · asked by Mystique 1 in Geography

hello
Is the first derivative of this 0.5((1+x)(1-x))^-1

second derivative ((1+x)/(1-x)^-2) * (-1/(1-x)^2)

third derivative is too complicated to write down.
Could you tell me if this is the Maclaurin series for (tanh)^-1 (x) or am i completely wrong!
thanks!

2007-01-08 07:19:23 · 6 answers · asked by mond257 1 in Mathematics

1.warm and sinking
2. warm and rising
3. cold and rising
4. cold and sinking

2007-01-08 07:18:40 · 4 answers · asked by Anonymous in Physics

2007-01-08 07:16:56 · 22 answers · asked by Hani M 1 in Mathematics

2007-01-08 07:15:48 · 2 answers · asked by blazinmarley420 1 in Zoology

2007-01-08 07:15:43 · 2 answers · asked by Anonymous in Chemistry

Convection, radiation, and conduction.

2007-01-08 07:14:36 · 1 answers · asked by md_free23 1 in Earth Sciences & Geology

wax, candy, plastic, lead, aluminum, copper, halite(NaCl), quartz, marble, and corundum

2007-01-08 07:13:59 · 2 answers · asked by AHHHH 2 in Chemistry

2007-01-08 07:13:05 · 9 answers · asked by sara s 3 in Astronomy & Space

2007-01-08 07:12:22 · 7 answers · asked by vbgore 2 in Other - Science

2007-01-08 07:07:37 · 6 answers · asked by Anonymous in Physics

2007-01-08 07:07:04 · 4 answers · asked by ~*¤*~Brit ~ 1 in Mathematics

What is the oxidation state of the potassium in K2O

2007-01-08 07:06:26 · 2 answers · asked by cetinnovations 1 in Chemistry

This is for my chemistry class. I have no idea how to solve

2007-01-08 07:05:28 · 4 answers · asked by therockj14 2 in Mathematics

2007-01-08 07:05:01 · 6 answers · asked by furlong 29 1 in Chemistry

ahaha i don't know what place to start looking for answer for this question, the lesson is vector addition:

Explore on the fact that one of the application of vectors is the addition of forces found by examining the action of various muscles of the body. Cite evidences to support the answer.


F.Y.I : I will be choosing the best answer ASAP

2007-01-08 07:03:57 · 4 answers · asked by Samlovesjesea 1 in Physics

NO(g)+MnO4(aq)----NO3(aq)+MnO2(s)

2007-01-08 07:03:50 · 2 answers · asked by NOMHLE N 1 in Chemistry

Why do the majority of muslims carry a smell that is somewhat reminiscent of curry powder. The smell seems to be even stronger when the muslim becomes sweaty. The smell sometimes becomes so severe that it resembles that of a Chicken Korma. I am interested in scientific analysis only, please.

2007-01-08 07:03:37 · 11 answers · asked by Anonymous in Biology

2007-01-08 07:02:07 · 4 answers · asked by Nathan C 1 in Chemistry

this project is do plants grow better with cola or water i no the answer but why and what should the backround be water? cola? or plants??? please helpppp meeeeee!!!!!!!!!!! and i need proof

2007-01-08 07:00:21 · 2 answers · asked by unknown 4 in Botany

2007-01-08 06:59:22 · 2 answers · asked by HAYLEY D 1 in Engineering

2007-01-08 06:57:12 · 13 answers · asked by HAYLEY D 1 in Engineering

With a plentiful supply of air, 3.0 parts carbon reacts with 8.0 parts oxygen to produce carbon dioxide. use this mass ratio to calculate how much carbon is required to produce 990g of carbon dioxide. the answer is 270 but how the hell this that happen?

2007-01-08 06:55:00 · 2 answers · asked by maya 4 in Chemistry

how do you solve 3sin^2theta+5cos theta -1= 0

please show wrking out
is there a rule for solving this equation please let me know.fnx

2007-01-08 06:54:49 · 5 answers · asked by izzy 1 in Mathematics

Suppose (S, +, *) and (S,+, #) are two rings. Then since both rings have the same abelian group (S, +), must (S, +, *) and
(S, +, #) necessarily be isomorphic?

More generally, if (R, +, *) and (S, @, $) are two rings, and the abelian groups (R, +) and

(S, @) are isomorphic, then must the two rings (R, +, *) and (S, @, $) necessarily be isomorphic to each other?

Inquisitively,

Edwin

2007-01-08 06:53:44 · 3 answers · asked by Ed S 1 in Mathematics