Science & Mathematics - 27 August 2007

What dimension do i need in a laminated beam of wood with 10cm with, when the distanse between bearing points is 5m an the power pressing on the beam is 1300kp/m, and egally all the way over the beam?
The hight of the beam?

2007-08-27 10:27:51 · 2 answers · asked by anordtug 6 in Engineering

I am refering to the procedure in the United Kingdom.

2007-08-27 10:27:17 · 4 answers · asked by Nirmala 4 in Chemistry

convince me that is so?

2007-08-27 10:21:49 · 9 answers · asked by Anonymous in Earth Sciences & Geology

Explain why we find so many different kinds of sedimentary rock layers are found in the Grand Canyon?

2007-08-27 10:20:51 · 2 answers · asked by Anonymous in Earth Sciences & Geology

Are there specific college courses and degrees for surveying? Do these requirements change from state to state? Are there tests required for certification?

2007-08-27 10:19:28 · 2 answers · asked by Bradley 2 in Engineering

8x - 4 - 2x = -10

2007-08-27 10:18:52 · 15 answers · asked by Erick L 1 in Mathematics

If the void exsists then does this mean that normal physics does not apply? EG time/space ? Indeed can time exsist without space?

2007-08-27 10:16:50 · 6 answers · asked by PR W 1 in Astronomy & Space

In a text there is a note saying that Na2 must be written as 2Na not Na2 (subscript). I don't understand why as it is the same thing. Any help would be appreciated

2007-08-27 10:16:43 · 2 answers · asked by Gideon 1 in Chemistry

This is a hypothetical question. I would think that all of the atoms would desintegrate and turn into a finely powdered substance.. then I thought it would kind of explode since there would be heavy ionization with the nearby air resulting in release of energy and light... But initially the nucleii would be repulsed from each other. Anyway I was just curious of what would happen from a purely hypothetical perspective, and I was hoping I could get a scientific and accurate answer if it really did occur. I hope this doesn't happen to my iPod though.

2007-08-27 10:16:37 · 7 answers · asked by allen314159 2 in Physics

2007-08-27 10:16:20 · 3 answers · asked by Melissa F 1 in Mathematics

In a text it states that the following equation

Na2CO3(aq)+Cu(s)-->Cu(s)CO3(s)+2Na

with a note saying that Na2 must be written as 2Na not Na2 (subscript). I don't understand why as it is the same thing. Any help would be appreciated

2007-08-27 10:14:18 · 2 answers · asked by Gideon 1 in Chemistry

2007-08-27 10:09:08 · 5 answers · asked by chadderz8988 1 in Astronomy & Space

2007-08-27 10:07:52 · 3 answers · asked by Anonymous in Astronomy & Space

Explain fully, including all assumed values

2007-08-27 10:04:22 · 2 answers · asked by dosad2004 2 in Physics

2007-08-27 10:01:14 · 9 answers · asked by Anonymous in Earth Sciences & Geology

2007-08-27 09:59:18 · 4 answers · asked by Anonymous in Biology

2007-08-27 09:58:13 · 8 answers · asked by GADAD/HDer 1 in Astronomy & Space

It is fairly common to find that at some definite composition, two substances form an eutectic mixture. For example, 1-naphthol melts at 95.5 Celcius and naphthalene melts at 80.5 Celcius. When mixtures of varying composition of these two substances are prepared it is found that the lowest melting point is obtained with a mixture consisting of 60.5 mol % naphthalene and 39.5 mol % of 1-naphthol. Such a mixture melts sharply at 61.0 Celcius. As this eutectic mixture melts, the composition of the melted mixture and the composition of the solid mixture remain unchanged, and as a consequence the melting temperature is constant. In terms of its melting point, such a mixture behaves like a pure substance. Given a sample of this eutectic mixture, how could you prove that it is not a pure substance? What would you do and what would you observe?

2007-08-27 09:56:11 · 2 answers · asked by Anonymous in Chemistry

A camel has to carry 3,000 bananas across a 1,000 mile desert.
These are the two conditions.
1. The camel can only carry 1,000 bananas at a time.
2. The camel eats one banana for each mile she travels.
What is the maximum number of bananas that will reach the other side of the desert?
Explain.

2007-08-27 09:53:40 · 11 answers · asked by mrfame1017 3 in Mathematics

2007-08-27 09:51:55 · 6 answers · asked by Anonymous in Physics

Like say my health insurance pays 95%
of my bill, and my bill would be 200$
how can i figure it out

im just using this as an example
i used to know how to do it
but i forgot

isnt it like 200 x's .95 or something?

2007-08-27 09:51:52 · 9 answers · asked by ♥ Stephanie Louise♥ 4 in Mathematics

2x+5=4(x+3)

is doesnt have anything squared?

2007-08-27 09:51:25 · 5 answers · asked by Anna 3 in Mathematics

Solve.
Find the equation of a circle with center at (-6, 2), passing through the point (-3,6) Write it in center-radius form.

2007-08-27 09:50:46 · 3 answers · asked by Kelly B 1 in Mathematics

iron + sulphur =Iron SulphIDE
why isn't the product iron sulphATE ???
What is the difference between -IDE and -ATE ??
And how do you know when you produce a product with
-IDE or -ATE ???
Help Please...

2007-08-27 09:50:44 · 4 answers · asked by Anonymous in Other - Science

2007-08-27 09:49:04 · 5 answers · asked by Anonymous in Mathematics

PLease work an example showing a step by step on how you got your answer.

2007-08-27 09:47:08 · 1 answers · asked by harold. 4 in Mathematics

2007-08-27 09:46:33 · 4 answers · asked by Anonymous in Physics

2007-08-27 09:45:09 · 7 answers · asked by Anonymous in Biology

2007-08-27 09:44:44 · 3 answers · asked by sandra r 1 in Medicine

If a calorie is the energy needed to increase the temperature of 1 gram of water by 1 °C, then why is it all over food products? And why are there more calories in certain foods than others? Why is more calories bad?

2007-08-27 09:37:49 · 9 answers · asked by gocougars1992 2 in Chemistry