Science & Mathematics - 20 October 2007

A herd of buffalo can move only as fast as the slowest buffalo, and when the herd is hunted, it is the slowest and weakest ones at the back that are killed first. This natural selection is good for the herd as a whole because the general speed and health of the whole group keeps improving by the regular culling of the weakest members.

In much the same way the human brain can only operate as fast as the slowest brain cells. Excessive intake of alcohol, we all know, kills brain cells, but naturally it attacks the slowest and weakest brain cells first.

In this way, regular consumption of alcohol eliminates the weaker brain cells, making the brain a faster and more efficient machine.

2007-10-20 06:47:07 · 2 answers · asked by . 3 in Biology

Let G be a group. How do you prove that the mapping alpha(g) = g^-1 for all g in G is an automorphism if and only if G is Abelian.

2007-10-20 06:42:32 · 3 answers · asked by Anonymous in Mathematics

Please provide a link . :) Thanx , so WHAT is another name 4 it , and WHY is it called that , it's ok if u can only find the other name 2 , but I'd b very pleased if u could rpovide why . And one more LINKS PLEASE . Thanx

2007-10-20 06:42:05 · 5 answers · asked by Starstruck* 2 in Astronomy & Space

2007-10-20 06:38:29 · 9 answers · asked by Anonymous in Geography

i wanna know from a material engineer scholar or graduate if they
used trigonometry,geometry or algebra in there classes or at work
cause i find trigonometry real difficult.

2007-10-20 06:37:30 · 3 answers · asked by Anonymous in Mathematics

I know, its going to die, but I really want to take care of it.

Its about this big:
___
( __ )

W/e, thats about the size.

My sister says they breathe through their whole bodies, and atm im keeping it in a jar about 3x its size. Glass. Dont worry, theres airholes.

So, what do i feed it and stuff o.o

2007-10-20 06:37:29 · 4 answers · asked by Spectrum 1 in Zoology

Objects with masses of 120 kg and a 420 kg are separated by 0.310 m.

(a) Find the net gravitational force exerted by these objects on a 50.0 kg object placed midway between them.
4.1642E-5 N

(b) At what position (other than infinitely remote ones) can the 50.0 kg object be placed so as to experience a net force of zero?




[That's not the correct answer, hmata3. stfu.]

2007-10-20 06:36:35 · 2 answers · asked by Burton 1 in Physics

2007-10-20 06:29:03 · 10 answers · asked by . 1 in Mathematics

2007-10-20 06:27:55 · 11 answers · asked by . 1 in Mathematics

i need help with multiplying decimals like these 13/9.367 and 5.3/4.38

2007-10-20 06:27:16 · 2 answers · asked by cdy_cambell 2 in Mathematics

using foil will be best suited for solving this math problem, I tried to figure out but I ended up getting the wrong answer. So please explain your answer. Thanks

2007-10-20 06:25:55 · 7 answers · asked by Anonymous in Mathematics

how do you find the limits of his?

lim x^9 cos (3/x)
x => 0

2007-10-20 06:25:26 · 3 answers · asked by remote control 1 in Mathematics

2007-10-20 06:23:14 · 3 answers · asked by Anonymous in Weather

what is the integral of (Ln x)^2?

2007-10-20 06:16:15 · 3 answers · asked by leslie11223344 1 in Mathematics

I though it was that an asteroid is still in space, and a meteor is an asteroid that has entered our atmosphere.

I looked at the definitions on google for each of the words, but I would like to hear from someone who has actually studied astronomy. Thanks for your answers.

2007-10-20 06:15:09 · 3 answers · asked by Anonymous in Astronomy & Space

I want to know technical details of creating electricity from water as shown in movie - Swadesh (Directed by Mr. Ashutosh Gorikar and Acted by Mr. Shaharukh Khan). I like to know details regarding all equipment , horse power of eqipment , Price of the all equiments;all technical details about equipement and how these equiment work.
I want to know that from how much liter of water, how much amount of electricity will create?

my e-mail id

rishikeshsansare_20@yahoo.co.uk

2007-10-20 06:15:02 · 3 answers · asked by Rishi s 1 in Engineering

Find the ratio of the rotational inertia of the Earth for rotation about its own axis to its rotational inertia for rotation about the Sun.

2007-10-20 06:12:20 · 1 answers · asked by Bob P 1 in Physics

2007-10-20 06:10:37 · 3 answers · asked by Anonymous in Geography

2007-10-20 06:08:50 · 5 answers · asked by jburns3423 1 in Earth Sciences & Geology

So I have .033 moles of HCL and .016 moles of Mg how do I find the ratio?
I know it's mole of HCl/mole of Mg but that's not correct, maybe it's the form you have to write it in?

2007-10-20 06:06:09 · 3 answers · asked by Anonymous in Chemistry

what is the best way to decide if a solution is aqueous, L, gaseous , or solid?
Is there an easy shortcut to finding the oxidation number of a ion?

2007-10-20 06:05:52 · 2 answers · asked by Melissa E 1 in Chemistry

what is the cochlea is used for
is does it make the mecanical movement in to something that we can hear

2007-10-20 06:05:27 · 4 answers · asked by fvsdf s 2 in Biology

For the systems of linear equations in questions 1-3
Determine how many solutions exist
Use either elimination or substitution to find the solutions (if any)
Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection

4x = 8 and 5y = 15

0.2x + 0.4y = 1.7 and 8.3x - 6.3y = -4.3

x/3 - y/5 = 4 and 3x/4 + 2y/3 = 6

2007-10-20 06:05:17 · 1 answers · asked by Snoopy Baby 1 in Mathematics

hey, need some help creating the functions for this story problem...

- The minimum number of employees that must be working each day of the week is as follows :

mon : 17
tue : 13
wed : 15
thu : 19
fri : 14
sat : 16
sun : 11

Each employee has to work 5 days in a row and then take a break for 2 days in a row. What is the minimum number of employees the company needs in order to run?

detailed explanation of how to find the functions appreciated!
thanks

2007-10-20 05:55:54 · 3 answers · asked by andrewskg3 1 in Mathematics

2007-10-20 05:55:53 · 1 answers · asked by Anonymous in Chemistry

I know there are several stages to this process. If anyone knows how long (on average) each stage takes, that would be really helpful.

Gracias.

2007-10-20 05:52:48 · 2 answers · asked by seriously_curious 2 in Engineering

Where do you live and what time is is???
I live in London, Ontario, Canda and it is 1:00pm

2007-10-20 05:51:02 · 15 answers · asked by Anonymous in Geography

S(t)=60000t+45000e^-0.07t where t S(t)=75,000te^-0.07t where t>0.5

2007-10-20 05:49:13 · 2 answers · asked by Sara C 1 in Mathematics

Write out the systematic names of the following compounds;
S2CL2, K2CO3, HBr, PCI5. AS2O5

2007-10-20 05:49:07 · 4 answers · asked by Shantell C 1 in Chemistry

2007-10-20 05:48:41 · 8 answers · asked by Cool Summer 2 in Geography