Science & Mathematics - 7 January 2007

2007-01-07 10:10:52 · 8 answers · asked by Emi ! 1 in Earth Sciences & Geology

What are other costs involved in building a super pipe other than labour and machine costs?

2007-01-07 10:10:24 · 1 answers · asked by Bella 2 in Engineering

The length of a rectangle is 40% more than its width. Its area is 560 square centimeters.

2007-01-07 10:09:56 · 4 answers · asked by Anonymous in Mathematics

The length of a rectangle exceeds its width by 4 feet. If the width is doubled and the length is diminished by 2 feet, a new rectangle is formed whose perimeter 8 feetmore than the perimeter of the actual rectangle. Find the dimensions of the original rectangle.

2007-01-07 10:09:05 · 1 answers · asked by Rani 1 in Mathematics

Animals that live in social groups, elephants, lions, wolves etc. How do they know who not to breed with?

2007-01-07 10:05:54 · 12 answers · asked by Susan C 1 in Zoology

Like what would the products of KCl and NaOH?

an example my homework gave me was Ba(NO3)2 and K2CO3
(the numbers are subscripts, I don't know how to make those)
the produs wer BaCO3+KNO3

2007-01-07 10:05:45 · 2 answers · asked by Anonymous in Chemistry

I mean, since I am in the Astronomy & Space section, i was wondering if anyone, if given the chance, would go on a rocket, and travel through space.

I'll tell you, I would jump at the chance! It sounds like such a lovely and awe-striking experience!

2007-01-07 10:04:50 · 9 answers · asked by Anonymous in Astronomy & Space

They are not dying either, any suggestions anyone? I used the Earth Juice Grow nutrients, and they are growing through these foam plugs.

2007-01-07 10:04:42 · 3 answers · asked by Anonymous in Botany

2007-01-07 10:01:01 · 3 answers · asked by drunkendonkey49 2 in Chemistry

not via google earth!!

2007-01-07 09:59:20 · 7 answers · asked by Anonymous in Geography

7. The base of an isoscels triangle and one of its legs have lengths that are consecutive integers. The leg is longer than the base. The perimeter of the triangle is 20. Find the length of each side of the triangle.

2007-01-07 09:56:49 · 6 answers · asked by sara b 1 in Mathematics

and how do you solve for it

2007-01-07 09:56:12 · 6 answers · asked by Anonymous in Mathematics

2007-01-07 09:56:07 · 4 answers · asked by Sexy Lilian B 2 in Earth Sciences & Geology

Or would it exist but be meaningless?

2007-01-07 09:53:31 · 10 answers · asked by TrippingJudy 4 in Physics

An uncharged molecule of dna is 2.11 micrometers long. The ends of the molecule become slightly ionized so that there is a charge of -1.6 E -19 C on one end and 1.6 E -19 C on the other. The helical molecule acts like a spring and compresses 1.2% upon becoming charged. The value of Coulomb's constant is 8.98755 E 9 N-m^2/C^2 and the acceleration due to gravity is 9.8 m/s^2. Find the effective spring constant of the molecule. Answer in units of N/m.

I have struggled with this for like the whole weekend. Please Help!

2007-01-07 09:52:25 · 5 answers · asked by Brown Nymph 07 3 in Physics

An approximate time will do, but if you know a souce for finding out times of sunset and sunrise I would be much obliged

2007-01-07 09:48:32 · 6 answers · asked by Bob Danvers-Walker 4 in Weather

1)Why can glycolysis supply energy to cells when oxygen is not present?
2)How much of the chemical energy in glucose is still unused at the end of glycolysis?
3)On average, how many ATP molecules are produced as each pair of high-energy electrons move down the electron transport chain? (think its 1 but not sure)
4)What is the name of the space that H+ ions build up in between the outer mitochondrial membrane and the inner mitochondrial membrane?
5) why is it that 18 times as much ATP can be generated from glucose is presence of oxygen than without oxygen?
6) WHat happends to the 62% of the total energy of glucose that is not used to make ATP molecules?
7)What are the 3 sources of ATP a human body uses at the beginning of a race?
8 When a runner needs quick energy for a short race, which source can supply enough ATP for around 90 seconds? (one of sources from question 7)
8)Why does a sprinter have an "oxygen debt to repay" after the race is over?

*2 more ?'s in add. details

2007-01-07 09:47:50 · 4 answers · asked by holaaloha12345 4 in Biology

2007-01-07 09:46:32 · 12 answers · asked by rigorkem 1 in Mathematics

maintain the same temperature? If you have a link to a website with information, that would be handy too.

2007-01-07 09:44:01 · 1 answers · asked by iheartkieran 1 in Earth Sciences & Geology

2007-01-07 09:41:50 · 2 answers · asked by Anonymous in Chemistry

Is there a certain wind involved?

2007-01-07 09:41:43 · 4 answers · asked by gogogo 3 in Weather

2007-01-07 09:41:18 · 23 answers · asked by Cozmik 2 in Paranormal Phenomena

i have a few handfulls of rubies emeralds garnets and sapphires and am wondering if they can be tumble polished

2007-01-07 09:40:23 · 1 answers · asked by jeff 1 in Earth Sciences & Geology

2007-01-07 09:39:01 · 39 answers · asked by Anonymous in Geography

The experiment consisted of every time feeding the dog, a bell was rung, over time, just the ringing of the bell made the dog think that he was going to be fed. This was proven to show a very primal learning behavior. I need help. I know the name when I hear it, but I can't seem to think of it off the top of my head.

2007-01-07 09:38:44 · 4 answers · asked by memama411 3 in Other - Science

because i once saw viva la bam and bam actully went 4 days without sleeping

2007-01-07 09:38:18 · 7 answers · asked by sergio 1 in Biology

2007-01-07 09:37:54 · 3 answers · asked by wjms_cheerleader 1 in Biology

2007-01-07 09:36:01 · 7 answers · asked by Troy D 2 in Astronomy & Space

How do fertilization clinics happen to have stem cells? Where do they come from? Are they donated by women? How are they used in in-vitro fertilization?

Aside from safety concerns for people who receive cell transplants, what reasons do people have against stem cell research?

2007-01-07 09:35:48 · 3 answers · asked by sparklycrayons 1 in Biology

2007-01-07 09:34:32 · 6 answers · asked by Litldragon67 2 in Astronomy & Space