Science & Mathematics - 13 August 2006

I need a good site in which I can get electronic parts. LED lights and resistors ect. DO NOT say Radio Shack they don't have the number or size of parts I need. (like a 10mm Led)

2006-08-13 17:01:00 · 2 answers · asked by Lupin IV 6 in Other - Science

2006-08-13 16:57:59 · 7 answers · asked by Anonymous in Biology

or does nature explain mathematics??

2006-08-13 16:56:04 · 8 answers · asked by Anonymous in Mathematics

A room is 10 meters long, 4 meters wide, and 4 meters high. A spider is at the middle of an end wall, 1/3 meter from the floor. A fly is at the middle of the other end wall, 1/3 meter from the ceiling, too frightened to move. The spider crawls to the fly. What is the shortest distance? (14 meters is not the correct answer.)

2006-08-13 16:53:42 · 15 answers · asked by Jerry M 3 in Mathematics

Let's say I start out at one end of a football field and begin walking toward the other end zone. When I reach the 50, it would be accurate to say that I have halved my original distance from the end zone. When I reach the 25, it would be accurate to say I've halved that remaining distance, and when I'm 12 and a half yards away, it would be accurate to say that I've halved that remaining distance. So one accurate description of my approach would be "continuously halving remaining distances from the end zone."

We know from mathematics that a number can be infinitely halved and will never reach zero because there will always be some infintesimal fraction remaining. Nevertheless, I will eventually find myself in the end zone, having not only reached zero, but surpassed it.

Is it actually inaccurate to describe me as halving the distances, and, if so, why does this seemingly incontrovertible description fail? Or is it that something I do not understand happens when I get there

2006-08-13 16:53:25 · 18 answers · asked by Matt F 1 in Physics

Who will know we were ever here in,say, five thousand years? Unlike the ancient civilzations, we are leaving nothing permanent behind, except maybe plastic containers, that will last that long.

2006-08-13 16:48:34 · 3 answers · asked by eyeque195 4 in Other - Science

2006-08-13 16:48:05 · 15 answers · asked by ♥ 3 in Mathematics

2006-08-13 16:47:18 · 13 answers · asked by tab12383 1 in Other - Science

The latest reports lean towards no...what do you think?

2006-08-13 16:45:54 · 19 answers · asked by dialout2000 2 in Astronomy & Space

Pls help me.

2006-08-13 16:43:01 · 5 answers · asked by Anonymous in Other - Science

2006-08-13 16:41:59 · 2 answers · asked by divya_kool18 1 in Chemistry

2006-08-13 16:36:10 · 8 answers · asked by Anonymous in Astronomy & Space

2006-08-13 16:35:15 · 3 answers · asked by gatoradegirl 1 in Biology

What number is as much more than ten as it is less than one-half of what thirty is ten less than?

2006-08-13 16:32:04 · 9 answers · asked by Jerry M 3 in Mathematics

Or a place with a list of programs that I can copy (legally) into my calculator?

2006-08-13 16:27:35 · 4 answers · asked by OobyDooby 4 in Mathematics

Ok it seems that im really stuck on this one question, I know how to these types of problems I just don't know what is the next step to complete the problem, can someone plz help me?

Given f(x)= square_root_of (x) , evaluate

lim ( f(x+h)-f(x) ) / h
h-->0


This is as far as i get:

( square_root(x+h) - square_root(x) ) / h

I need to get rid of the "h" ... what do i do next???

2006-08-13 16:27:06 · 5 answers · asked by Sir Excalibur 2 in Mathematics

2006-08-13 16:25:09 · 20 answers · asked by Chenier 2 in Earth Sciences & Geology

If the level goes below 15%, for example, does fire burn or our brains work well? And over 25%, does the world burn?

2006-08-13 16:23:00 · 1 answers · asked by Thorbjorn 6 in Earth Sciences & Geology

i dont want to be sophmore next year is there anyway for me get junior next year Can i like do soph summer school classes for soph so then next year i can be junior and catch up ? to graduated in time?

2006-08-13 16:21:55 · 10 answers · asked by Anonymous in Other - Science

how do people gain weight instead of stress and lazzyness??
how do people gain weight in a scientific way???

2006-08-13 16:16:42 · 35 answers · asked by sharon h 1 in Other - Science

Canyou plz tell me if i got these problems correct, bc my friend here sais i didnt, but i dont think he is right...help lpz?

#1
lim ( square_root(6-h) - square_root(6) ) / h
h-->0

#2
lim ********** absolute_value( x + pi ) / ( x + pi )
x--> -pi

#3
lim ( (1/(5-x)) - (1/5) ) / x
x-->0


Ok, for the problem #1 and #2 my answer is that the limit does not exist and for #3 the limit is 1/25 . Can you tell me if these answers are correct OR show me how to do them if they are wrong? thx so much!

2006-08-13 16:07:53 · 13 answers · asked by Sir Excalibur 2 in Mathematics

If you have a 21-day ascending linear regression trendline (slope .211) with an R2 of .642 with values currently two standard deviations below it, and you have a descending 7-day linear regression trendline (slope -.245) with an R2 value of .852, with values on and around it, how are these two trendlines likely to reconcile themselves? I'm interested in learning how to make these judgments. Thanks in advance.

2006-08-13 16:07:41 · 2 answers · asked by Anonymous in Mathematics

We see refraction with marbles rolling on a plane encountering either a ramp up or down. It is another force, gravity that causes the refraction of the marble. What is the other force that is applied to the photon that causes it to change direction when entering glass say?
The angle of refraction infers that the photon is speeded up, and yet the texts refer to photons being slowed by their passage through glass. Also, what the heck is going on with double-refraction? Are the two beams travelling at different speeds through the same media?

2006-08-13 16:06:00 · 3 answers · asked by Plato X 2 in Physics

2006-08-13 15:59:15 · 3 answers · asked by billbowlerski 3 in Other - Science

y = 1/5 x +b and y = ax+3 are inverse functions.
Solve for a and b...?
Yes I know it's late at night, but I'm stuck on this ONE problem and I can't go to sleep without solving it! Please try your best to give a clear explanation!
And only serious answers please!
Thank you. (Clearest answer gets 10 points! <3)

2006-08-13 15:57:24 · 6 answers · asked by belleswan 3 in Mathematics

2006-08-13 15:53:22 · 25 answers · asked by Anonymous in Astronomy & Space

1.(-4)(-11)
2.(4x+9)(3x-5)
3.m2 - 81
m+9 m+9
4.factor 25x2y4 - 64x4y4
5.2x - y= -1
x + y= 7....On this one do you match up like terms??

Hey,You really don't have to give me just the (straight answer)..I wanna learn how to do this..I haven't seen this sence the tenth grade..THANKS GOD BLESS..explain it to me please

2006-08-13 15:51:57 · 11 answers · asked by william h 1 in Mathematics

I am trying to test out of Algebra 2 the day after tommrow so can someone give me quick tips on what I should know or review. Thanks.
P.S. I am in high school not college yet.

2006-08-13 15:50:48 · 6 answers · asked by ob 1 in Mathematics

2006-08-13 15:48:55 · 16 answers · asked by Mattman 6 in Physics

For example: we had a den in a Midwestern house that was a few feet--maybe three feet--closer to the ground than in the rest of the house. People felt in that room that gravity was stronger than in most places they'd experienced it.

What do you think? This was in farm country--not mountainous or unstable.

2006-08-13 15:45:15 · 9 answers · asked by Austin W 3 in Earth Sciences & Geology