Science & Mathematics - 7 June 2006

Four villages... A,B,C and D form the shape of a square whose dimentions are 10 miles. One day, the coucillors of the villages get together and decide to build a road network that connects all of the villages in a manner that it is possible to go from any village to any other. Unfortunately, cost is a prime factor so they dissmiss the idea of building 4 roads ie. from A to B, B to C, C to D and finally, D to A since this would be 40 miles of road.

They then realise tha by eliminating one of the roads it would still be possible to get to any village (although some poor sod will now have to do a thirty mile trip instead of what would have been 10) and this would make the overall length of the three roads 30 miles.

Then they came up with the idea of an 'X' shape which would also solve the problem. Applying the basic Pythagoras theorem most of you will come up with an answer of about 28.3 miles. So this is surely the best answer.....isn't it?

2006-06-07 10:02:57 · 7 answers · asked by brainyandy 6 in Mathematics

2006-06-07 10:00:26 · 7 answers · asked by harmonva 1 in Mathematics

This question is for female engineering/science/technology students. If you are a female engineering student, why are you not active in participating in the society of women engineers or SWE. Please be honest-be brutal if you have to.

2006-06-07 09:57:36 · 3 answers · asked by rflatshoe 3 in Engineering

Tirana is the capital of Albania

2006-06-07 09:57:30 · 1 answers · asked by ? 2 in Geography

2006-06-07 09:56:22 · 13 answers · asked by Starchild 2 in Biology

2006-06-07 09:51:56 · 21 answers · asked by cropcrazy 1 in Earth Sciences & Geology

is it atomic energy, burning coal, larger cars, or solar energy

2006-06-07 09:51:44 · 11 answers · asked by christy 1 in Other - Science

How do abiotic factors ( non-living things) affect the savanna bimoe. These things are like rocks, dirt, climae, and weather. Help!!!!!

2006-06-07 09:50:01 · 1 answers · asked by alexxxa $ o's 4 in Biology

2006-06-07 09:47:30 · 12 answers · asked by Anonymous in Botany

2006-06-07 09:45:52 · 5 answers · asked by annie 2 in Mathematics

When is the next full moon??

2006-06-07 09:44:48 · 10 answers · asked by lilokiegurl 2 in Astronomy & Space

2006-06-07 09:41:38 · 1 answers · asked by Anshuls 1 in Chemistry

http://www.zetatalk.com/
All you need to know from a far superior race...here to warn and help.
Having studied the planets all of my life, one knows something is very wrong now. The Zeta explain all in detail ...now all makes sense

2006-06-07 09:40:44 · 15 answers · asked by creativedynamic 2 in Astronomy & Space

I've heard the 1.4 solar mass number thrown around, but I thought the Chandrasekhar Limit applied to white dwarfs - electron degenerate matter - not neutron degenerate matter

2006-06-07 09:35:46 · 3 answers · asked by Ethan 3 in Astronomy & Space

2006-06-07 09:27:25 · 14 answers · asked by Martin P 1 in Astronomy & Space

2006-06-07 09:22:16 · 4 answers · asked by isabella 2 in Astronomy & Space

2006-06-07 09:21:25 · 15 answers · asked by Anonymous in Chemistry

2006-06-07 09:20:49 · 8 answers · asked by farklemairgle1 1 in Physics

2006-06-07 09:16:33 · 3 answers · asked by Anonymous in Biology

2006-06-07 09:15:20 · 4 answers · asked by Ryan G 2 in Earth Sciences & Geology

2006-06-07 09:13:49 · 9 answers · asked by Ivan R 1 in Earth Sciences & Geology

I am investigating the change in size of pebble deposits over a coastal spit in my area and was wondering if there is any concrete theory on a relationship of the outer curve consisting of larger particles than the inner curve?

2006-06-07 09:13:05 · 6 answers · asked by NG 1 in Geography

samuel from Ghana

2006-06-07 09:12:06 · 2 answers · asked by bolloson 1 in Geography

My sons science teacher told him it was through infra red; but I thought that was a light wave outside of the visible spectrum. What is the correct answer?
By the way, this is the teacher getting him through his g.c.s.e's...

2006-06-07 09:10:17 · 8 answers · asked by sarah c 7 in Physics

Hidrcarbons are hidrocarbons, it is posible to press/bake diamonds ¿Why cant we press/bake/nuke NEW oil? I know the EXISTING oil is already there,it is cheaper just to TRANSPORT it and PROCESS it, but still i really want somebody who KNOWS what would it take to get there.

2006-06-07 09:03:16 · 3 answers · asked by jose t 1 in Chemistry

I have the theory that explains time, the big bang, how the universe is changing, ETC.! My theory totally equates! There are no missing parameters, everything fits together like a glove! Is the world ready for this?

2006-06-07 09:00:47 · 17 answers · asked by Anonymous in Astronomy & Space

2006-06-07 09:00:22 · 6 answers · asked by Anonymous in Other - Science

2006-06-07 08:56:24 · 3 answers · asked by SELINA D 1 in Weather

2006-06-07 08:54:59 · 21 answers · asked by makaylan 1 in Mathematics

A. develop the opposite charge as the charged body
B. remain a neutrally charged body
C. develop the same charge as the charged body
D. neutralize the charged body

2006-06-07 08:54:57 · 6 answers · asked by Andrea 3 in Physics