Science & Mathematics - 24 October 2007

Just like light should not even alter its wave length because, hey, its the almighty light.

2007-10-24 09:09:22 · 2 answers · asked by spencer 2 in Physics

Why do you often times see a lone tree in the middle of a field, and does anyone have ant reference's to the answer. Best I could find was, shade for the farmer, nutrients for the soil, last tree used as pulley system for plowing other trees.

2007-10-24 09:09:20 · 5 answers · asked by kdeuce7 1 in Botany

Any real psychics? If so, tell something about myself.

2007-10-24 09:08:33 · 16 answers · asked by Anonymous in Parapsychology

2007-10-24 09:07:28 · 5 answers · asked by spencer 2 in Astronomy & Space

I'm so sleepy now I cant remember if I'm supposed to round up or down?

2007-10-24 09:07:26 · 5 answers · asked by G's Random Thoughts 5 in Mathematics

The precise area please.

2007-10-24 09:07:20 · 6 answers · asked by puppyface1004 1 in Geography

x/6 its a fraccion

again this is the equation x/6 = 11

it,s say multiply both sides by 6???

the result is x/6 = 25

why 25 ???

and can you explain me if you know what is the process to get 25

thank you so much god bless you

2007-10-24 09:06:48 · 4 answers · asked by Anonymous in Mathematics

2007-10-24 09:06:13 · 4 answers · asked by sanju 1 in Zoology

I already know that you wrap wire around a nail and close the circuit with a battery. My question is what voltage battery do you use and what gauge wire? I need numbers!

Thanks,

2007-10-24 09:04:48 · 4 answers · asked by Anonymous in Physics

What size cable would one need to supply 400 amperes, 380v 3phase 60 Hz at a distance of 1000 metres? Or is it better to go to transformers and high voltage. All power is by way of gensets. Right now we have numerous gensets on this farm. All are critical power scenarios. Any advice is very welcome. Cheers.

2007-10-24 09:03:44 · 5 answers · asked by kelvin s 1 in Engineering

2007-10-24 09:03:19 · 7 answers · asked by ? 4 in Astronomy & Space

Of which categories...Real,Irrational, Rational, Whole, Integer, Natural

2007-10-24 09:00:48 · 7 answers · asked by hello1 2 in Mathematics

2007-10-24 09:00:38 · 9 answers · asked by Anonymous in Chemistry

another question from my son

2007-10-24 08:59:03 · 17 answers · asked by Kty 2 in Other - Alternative

2007-10-24 08:57:12 · 9 answers · asked by annieS 1 in Botany

What are the names of bacteria that inhabit dark places and need no oxygen and light, and bacteria that do need oxygen
and light?

2007-10-24 08:56:43 · 2 answers · asked by higgs2boson 3 in Biology

i recently read about the guy who went to the diamond mine in arkansas, and he found a nice sized stone. i want to go and spend a week or two out there just sifting thru dirt, and doing all the extras in order to find something. they say there have been 795 finds this year. im trying to be another statistic.

2007-10-24 08:55:10 · 3 answers · asked by TooTall 2 in Earth Sciences & Geology

Given subspaces H and K of a vector space V, the sum of H and K, written as H + K, is the set of all vectors in V that can be written as the sum of two vectors, one in H and the other in K; that is,
H + K = {w : w = u + v for some u in H and some v in K }

a. Show that H + K is a subspace of V.
b. Show that H is a subspace of H + K and K is a subspace of H+ K.

I am completely lost on this problem so any information on a solution or how to solve it would be greatly appreciate. Thanks a lot.

2007-10-24 08:53:20 · 3 answers · asked by swierczawack 2 in Mathematics

I am so confused on how to do this :S

Among U.S. cities with a population of more than 250,000 the mean one-way commute to work is 24.3 minutes. The longest one-way travel time is New York City, where the mean time is 38.3 minutes. Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 7.5 minutes.

What percent of the New York City commutes are for less than 30 minutes?

What percent are between 30 and 35 minutes?

What percent are between 30 and 40 minutes?

2007-10-24 08:52:34 · 1 answers · asked by Anonymous in Mathematics

What is 1+1 equal

2007-10-24 08:49:40 · 6 answers · asked by Anonymous in Mathematics

2007-10-24 08:49:08 · 3 answers · asked by Suzanne B 1 in Engineering

Suppose Bob and Nick are playing a game. Bob rolls a die and continues to roll until he gets a 2. He keeps track of all the outcomes of the rolls. He calls the sum of the rolls X. Nick does the same thing as Bob, only he keeps rolling until he gets a 5 and he calls the sum of his rolls Y. At the end of the game, Bob pays Nick Y dollars and Nick pays Bob X dollars. Does one of the boys have an advantage over the other? Which one?

2007-10-24 08:48:49 · 12 answers · asked by cornzxo 1 in Mathematics

seriously can someone explain this?!

2007-10-24 08:47:25 · 3 answers · asked by Anonymous in Astronomy & Space

A Norman window has the shape of a rectangle surmounted by a semicircle. A norman window with perimeter 30 ft is to be constructed.

Find a function that models the window.
Find the dimensions of the window that admits the greatesr amount of light.

The base of the window is x

2007-10-24 08:46:12 · 2 answers · asked by Pipos 1 in Mathematics

2007-10-24 08:46:03 · 4 answers · asked by Kristi M 1 in Geography

I have Crest® SpinBrush® - SpinBrush Pro Recharge toothbrush. My question is how does it recharge if there is no metal contact between the base and toothbrush?.Plastic is between the base and toothbursh.

2007-10-24 08:42:02 · 4 answers · asked by myzzjuli 1 in Engineering

I can send the picture to the people so if u dont belive me tell me.

2007-10-24 08:40:17 · 5 answers · asked by Gabbi R 1 in Astronomy & Space

2007-10-24 08:34:23 · 5 answers · asked by squirtslove 1 in Weather

If a square mat has 64 squares and each are 64m squared, what is the perimeter?

2007-10-24 08:34:15 · 5 answers · asked by bleedinglove_x 3 in Mathematics

If you could dig holes as indicated above into the surface of the Earth and keep all water out, how many would you need in order to drain the entire ecosphere from Earth's surface? An extra factor to consider aside from the depths of the holes is the soil displacement that would end up raising the surface of the Earth somewhat while also raising the altitude of the ecosphere.

Just curious...

2007-10-24 08:32:27 · 2 answers · asked by uncleclover 5 in Earth Sciences & Geology