Science & Mathematics - 23 December 2006

2006-12-23 11:43:37 · 16 answers · asked by Bratz A 1 in Astronomy & Space

i.e, does autumn occur in all places in a country at the same time, or does it travel from, say, North To South, and if so, can the speed be calculated.
A friend said that it travels around 45Km per day N to S, but i've been unable to confirm this. Cheers.

2006-12-23 11:35:14 · 6 answers · asked by orc_adian 1 in Weather

I need to figure some load balances on both delta and wye wired transformer secondaries.

2006-12-23 11:34:07 · 3 answers · asked by Anonymous in Engineering

2006-12-23 11:30:02 · 3 answers · asked by shadowkid552000 1 in Geography

2006-12-23 11:29:39 · 7 answers · asked by ben c 2 in Earth Sciences & Geology

2006-12-23 11:29:13 · 11 answers · asked by #1 yankees fan 2 in Astronomy & Space

2006-12-23 11:25:38 · 22 answers · asked by i love new york city 1 in Astronomy & Space

2006-12-23 11:23:56 · 24 answers · asked by Mattowski 1 in Astronomy & Space

I'd heard it was because poor quality steel was used to build it.

2006-12-23 11:18:09 · 10 answers · asked by Anonymous in Chemistry

if lim x approaching inifinity f(x) = 0 and lim x approaching infinity
g(x) = 0, does lim x approaching infinity f(x) / g(x) exist ? Explain with examples.

2006-12-23 11:12:52 · 5 answers · asked by unnamed 1 in Mathematics

It appears at the shuttle's tail every landing. Is it necessary

2006-12-23 11:12:37 · 22 answers · asked by Anthony K 1 in Astronomy & Space

I know about eagles vortexing upwards on thermals. When other birds, like terns, whip and vortex around at sunset, for example, are they riding on low thermals? What is the air doing as it's churned up by their movements?

2006-12-23 11:12:15 · 2 answers · asked by Anonymous in Zoology

An airplane is descending to an airport to land. The airplane is at 30,000 feet. If the airplane descends at a 3 degree angle of depression, how far is the airport from the ground directly below the plane?
I've done the problem but want to make sure it is correct.
Thanks

2006-12-23 11:09:46 · 5 answers · asked by bravestdawg101 3 in Mathematics

explain why lim x approaching infinity mx + b / x^2 +5x +1 = 0 for any m, b is rational number.

2006-12-23 11:09:34 · 6 answers · asked by unnamed 1 in Mathematics

These energys are built up during flight, do not disappate in space, and takes a series of S curves to disappate during the decent back thru our atmosphere. What are the energys? Why don't they disappate in space? And why the S curves? They must not be harmful energys: Space walks, or is that due to grounding, or lack of?

2006-12-23 11:07:20 · 4 answers · asked by Anonymous in Astronomy & Space

John is at a table with other people. He has $1 more than the person to his right & that person has $1 more than the person to his right and so on around the table. Then, John gives one dollar to the person to his right and he in turn gives $2 to the person to his right and that person gives $3 to the person to his right and so on. This process continues around the table as many times as is necessary until someone has no money left. At that time, John has 9 times the money as the person to his right. How many men are there along with John, how much money did he start with, and how much money does he have at the end?
Can you prove the uniqueness of the solution?

2006-12-23 11:07:03 · 19 answers · asked by oscarD 3 in Mathematics

A landscaping company has been commissioned to design a triangular flower bed for a mall entrance. The final dimensions of the flower bed have not been determined, but the company knows that the height will be two feet less than the base. The area of the flower bed can be represented by the equation A=1/2b^2-b.

1.Write this equation in factored form.
2.Suppose the base of the flower bed is 16ft. What will be its area?

2006-12-23 11:01:35 · 6 answers · asked by baseballman1243 1 in Mathematics

Every depiction I ever saw of dinosaurs had them as Godzilla green; but how do we know?

2006-12-23 10:57:41 · 14 answers · asked by Anonymous in Zoology

I know how turbines work, but I cant work out why the sails of those huge wind turbines are always moving 1) at the same speed, and 2) even on days when there is no wind. How is the wind even strong enough to cause the blades to move?

2006-12-23 10:48:46 · 11 answers · asked by Chartlotte M 2 in Physics

For example Pyrite mostly consists of FeS2 but it often contains impurites such as Nickel and Cobalt. What I don't undertand is how such impurites "interconnect" with the FeS2 crystal lattice. In other words what effect do impurities have on a mineral major chemical make up in terms of its lattice structure?

2006-12-23 10:48:04 · 2 answers · asked by Gideon 1 in Earth Sciences & Geology

2006-12-23 10:46:42 · 18 answers · asked by Anonymous in Astronomy & Space

You have two jugs. One has a capacity of five litres, the other three litres. Using only these two jugs as a means of measurement, how do you get exactly four litres into the five litre jug?

2006-12-23 10:44:05 · 12 answers · asked by Anonymous in Other - Science

for insects i think the ant because they all work together for the good of the whole colony.i think its fascinating how God made them like that.maybe to teach us a lesson about cooperation.

2006-12-23 10:43:10 · 5 answers · asked by forest lover 2 in Zoology

2006-12-23 10:41:41 · 16 answers · asked by forest lover 2 in Zoology

2006-12-23 10:38:02 · 10 answers · asked by TONY T 2 in Parapsychology

Where would you like to travel? To the future, past? Precise when and why.

2006-12-23 10:33:21 · 14 answers · asked by ladysorrow 7 in Physics

2006-12-23 10:30:51 · 4 answers · asked by Anonymous in Medicine

2006-12-23 10:29:26 · 14 answers · asked by andypc14 2 in Weather

2006-12-23 10:27:10 · 18 answers · asked by Anonymous in Chemistry

No decimals. I want a whole number. I also want it to be green.

2006-12-23 10:24:22 · 13 answers · asked by Anonymous in Other - Science