Science & Mathematics - 26 January 2007

i think i already know that the answer is NO, but why not. why can't we make an electron gun or laser that just shoots electrons in a straight line over large distances with no medium?

2007-01-26 10:57:50 · 5 answers · asked by JizZ E. Jizzy 2 in Physics

Find the first three iterations of each expression:
1) x+3, where x intially equals 12.
2) 3x+2, where x initially equals 4.
3) x squared, minus two, where x initially equals 3.
4) 2(x-3), where x initially equals 1.

2007-01-26 10:57:30 · 3 answers · asked by TJTB 7 in Mathematics

2007-01-26 10:56:53 · 12 answers · asked by Anonymous in Earth Sciences & Geology

2007-01-26 10:56:53 · 5 answers · asked by Doug 2 in Mathematics

i am an 8th grader and i need to give a presentation on the fibonacci sequence for extra credit, my teacher says i need to explain what the fibonacci sequence is and its relations to nature and who is fibonacci. Oh and my teacher wants me to explain something with a triangle or something like that. If anyone could help me that would be really great

2007-01-26 10:56:37 · 3 answers · asked by kyle s 1 in Mathematics

seems like a waste of good sunlight and heat to not be trying to harness some of it right now. think of how much energy we could be getting from there. i know it would cost too much and would probably take more energy to set it up and go get the energy than it will provide, but should we be brainstorming right now how to overcome these inproficiencies? << wow what a word.

2007-01-26 10:55:46 · 3 answers · asked by JizZ E. Jizzy 2 in Other - Science

( . . . . . . ... .. . .. . . . ....) ^-1
( 28x^2 y^5 - 7xy +14 )
( _______________ )
( . .. ... .... .... .. . 2 . .. ...)
( 2x^2 - 2( 3x - ___ )^2)
( . .. . .... .. . . .. x^-1 . ...)

2007-01-26 10:53:49 · 2 answers · asked by Doug 2 in Mathematics

2007-01-26 10:53:14 · 1 answers · asked by Anonymous in Earth Sciences & Geology

dream visually even if they have been blind from birth and if so, can they dream in color?

2007-01-26 10:53:04 · 5 answers · asked by brac4020 2 in Biology

ummm not too sure maybe someone can share some info on the subject.

2007-01-26 10:51:37 · 4 answers · asked by fretnoise21 1 in Physics

2007-01-26 10:50:23 · 2 answers · asked by Anonymous in Chemistry

Such as a crystal and a metal cross. Would you find pieces in with the ash?
This is a VERY SERIOUS question.

2007-01-26 10:49:25 · 2 answers · asked by kat 1 in Biology

with the right fixture rated to handle 125 watts

2007-01-26 10:48:39 · 9 answers · asked by Nick S 1 in Engineering

Technically, if the universe is expanding it means that there is a line where the universe as we know it ends and from there it continually expands. I wonder what the area beyond where the universe expands is all about.

2007-01-26 10:46:23 · 10 answers · asked by Anonymous in Astronomy & Space

2007-01-26 10:46:20 · 4 answers · asked by Anonymous in Physics

2007-01-26 10:45:56 · 6 answers · asked by Anonymous in Mathematics

2007-01-26 10:45:39 · 2 answers · asked by Doug 2 in Mathematics

a. 25/16
b. 5/4
c. 25/4
d. 5/2

2007-01-26 10:44:25 · 3 answers · asked by Anonymous in Mathematics

a. between -3 and -2 and between 0 and 1
b. between -1 and 0 and between 2 and 3
c. no real solutions
d. -1, 1

2007-01-26 10:41:53 · 1 answers · asked by Anonymous in Mathematics

-3 . .. .. .. . . 2x
___ . .. - .... ___
x+1 . .. ... .. -x -1
________________
-10
_____ + 4
x+1

2007-01-26 10:41:46 · 9 answers · asked by Doug 2 in Mathematics

2007-01-26 10:41:44 · 13 answers · asked by Anonymous in Earth Sciences & Geology

Can someone please explain to me the process of carbon dating? How it works, how accurate it is, etc.
Brief explanation with key points is acceptable. Thanks.

2007-01-26 10:40:50 · 8 answers · asked by CK 5 in Chemistry

2007-01-26 10:40:06 · 3 answers · asked by Anonymous in Biology

2007-01-26 10:38:42 · 5 answers · asked by Anonymous in Physics

Where is Iraq's location today as compared to Gallilee in the year 13 B.C.?

2007-01-26 10:37:55 · 2 answers · asked by ADMIRAL 0125 1 in Geography

the answer will be 0/0 undefined so we try to manipulate the eqyation
e.g. lim (x^2 * x ) / x the answer will be 0/0 ,
so:
lim (x^2 * x ) / x = lim (x(x-1)) /x =lim x-1=0

2007-01-26 10:37:47 · 4 answers · asked by Anonymous in Mathematics

2007-01-26 10:36:00 · 2 answers · asked by goring 6 in Astronomy & Space

In the United States, 43% of people wear a seat belt while driving. If two people are chosen at random, what is the probability that both of them wear a seat belt?

How do you get 43% of 43% is 18.49%. I mean, i don't get why do use this method. it doesn't make any sense how this method work.
can you explain in detail please?

2007-01-26 10:34:40 · 2 answers · asked by Ha!! 2 in Mathematics

During their alternation of generation, the haploid phase of higher plants produce
A) clusters of diploid cells
B) diploid gametes
C) diploid individuals
D) zygotes
E) haploid male and female gametes

2007-01-26 10:32:22 · 3 answers · asked by ph103 1 in Biology

2007-01-26 10:31:50 · 10 answers · asked by sahsjing 7 in Mathematics