Science & Mathematics - 11 November 2006

A piece of wire is 14m long is cut into 2 pieces. One is bent into a square. The other is bent into an equilateral triangle. How should the wire be cut for the square so that the total area enclosed is a minimum?

2006-11-11 13:01:37 · 2 answers · asked by a.t. 1 in Mathematics

2006-11-11 13:01:35 · 3 answers · asked by Breezee 2 in Earth Sciences & Geology

2006-11-11 13:01:05 · 5 answers · asked by Anonymous in Earth Sciences & Geology

Wheel A of radius rA = 10 cm is coupled by a belt B to wheel C of radius rC= 25 cm. The angular speed of wheel A is increased from rest at a constant rate of 1.6 rad/s^2. Find the time needed for wheel C to reach an angular speed of 100 rev/min, assuming the belt does not slip. (Hint: If the best does not slip, the linear speeds at the two rims must be equal.)

Please help me with this problem I really want to learn how to solve it because I have an exam next week and I don't understand this! Thanks so much!

2006-11-11 12:59:03 · 2 answers · asked by afchica101 1 in Physics

What would be the answer to this problem:

.08y-y=840

What's the value of y?

2006-11-11 12:56:46 · 8 answers · asked by Rachel 1 in Mathematics

I recall hearing so much debate saying the moon missions were faked. Why can't we just direct a telescope toward the moon to actually see if we did land on the moon? It seems we could use one of our telescopes in space to take a look toward the moon and see our stuuf. Why hasn't this been done??

2006-11-11 12:49:36 · 10 answers · asked by smartman300 2 in Astronomy & Space

2006-11-11 12:42:48 · 6 answers · asked by Senthil R 1 in Engineering

I'm having trouble understanding the concept of a state function, particularly relating to enthalpy, which is, and heat and work, which are not. I don't understand the why of this very well.

2006-11-11 12:41:50 · 2 answers · asked by The Ghetto David Hume 3 in Chemistry

It was a member of the United Nations some said.

2006-11-11 12:37:46 · 6 answers · asked by ERLINDA F 1 in Geography

2006-11-11 12:35:20 · 14 answers · asked by romeyman1 1 in Physics

This is a question for a Nursing Fundamentals class in a unit on Fluid, Electrolyte, and Acid-Base Balances.

2006-11-11 12:30:57 · 7 answers · asked by sshawn35 2 in Medicine

2006-11-11 12:30:26 · 5 answers · asked by Dan 1 in Earth Sciences & Geology

what is governing factor when we choose air condition unit

2006-11-11 12:22:13 · 6 answers · asked by SARATH J 1 in Engineering

Find an equation of the parabola that has a focus at (9,7) and a vertex at (9,2)

2006-11-11 12:18:00 · 2 answers · asked by John W 1 in Mathematics

its part of the stuff i hav 2 learn 4 science. and i dont understand it. so please explain it 2 me.,.. i think it has somethin 2 do with dawin's theory that theonly the ones that have favoured characterics survive.

2006-11-11 12:15:10 · 9 answers · asked by rooney8 2 in Biology

How do you make a six pointed star out of a circle from folding and using only one straight cut?

2006-11-11 12:14:40 · 3 answers · asked by Conspirator 2 in Mathematics

2006-11-11 12:14:06 · 1 answers · asked by 1-4-all 3 in Chemistry

How do you make a six pointed star from folding and using only one straight cut?

2006-11-11 12:14:04 · 3 answers · asked by Conspirator 2 in Mathematics

2006-11-11 12:13:28 · 9 answers · asked by Anonymous in Zoology

How do you make a six pointed star from folding and using only straight cut?

2006-11-11 12:13:28 · 2 answers · asked by Conspirator 2 in Mathematics

2006-11-11 12:12:30 · 5 answers · asked by clearie 1 in Biology

The equivalency principle of Einstein says that inertial mass is eqivalent to gravitational mass so both can have same acceleration or weight at any speed?

2006-11-11 12:12:00 · 5 answers · asked by goring 6 in Physics

2006-11-11 12:11:12 · 1 answers · asked by Anonymous in Biology

If I measure the length of my arms spread out from both middle fingertips. Is That my exact height and is this a precise measurement?

2006-11-11 12:08:37 · 10 answers · asked by bramosgirl 2 in Other - Science

how???

2006-11-11 12:07:44 · 2 answers · asked by clearie 1 in Biology

ok i need help with a consecutive interger problem i dont want the answer i just need help on how to answer it. here it is:

The lesser of two consecutive even intergers is 10 more than one-half the greater. Find the intergers.

2006-11-11 12:06:55 · 1 answers · asked by Natasha D 2 in Mathematics

2006-11-11 12:05:59 · 2 answers · asked by tristan b 1 in Physics

for example: 300 m^2 --> km^2?

2006-11-11 12:04:03 · 7 answers · asked by Ha!! 2 in Mathematics

Can they not feel that they are burning and get out before it's too late?

2006-11-11 12:03:46 · 9 answers · asked by Heron By The Sea 7 in Zoology

Where do pearls ,diamonds,gold, come from))))))---. ? We can eat fish ,crab, shirmp. why cant we drink the water,? what cause the water to be undrinkable,? how do fish see they way around in the dark water?who could hold they breath in the water the longest man or women?

2006-11-11 12:02:24 · 13 answers · asked by Anonymous in Zoology