Science & Mathematics - 26 September 2007

please help!

2007-09-26 10:36:07 · 2 answers · asked by swimming_dramastar19 4 in Biology

i know that 'm' is the slope and 'b' is the y-intercept but what does the actual letter stand for. like what is the word that makes people use 'm' instead of 's'? also please list sources and websites for where i can find this answer.
thanxx in advance =]

2007-09-26 10:34:30 · 7 answers · asked by ? 2 in Mathematics

what is the derivative of the [Square root of (3t)] - t^2


thanks in advance! :]

2007-09-26 10:33:22 · 2 answers · asked by FaanBo 1 in Mathematics

http://www.youtube.com/watch?v=AgdITahFXw0

2007-09-26 10:31:00 · 13 answers · asked by Anonymous in Astronomy & Space

please help me

2007-09-26 10:30:51 · 7 answers · asked by Anonymous in Astronomy & Space

what's higher than calculus?
more detailed, i either want to be an architectural engineer, or environmental.
help please. thanks!

2007-09-26 10:30:26 · 9 answers · asked by roll tide & go pats =) 3 in Engineering

2007-09-26 10:30:18 · 1 answers · asked by Nicholas 1 in Biology

And can you explain what weak nuclear and strong nuclear are?

2007-09-26 10:28:00 · 4 answers · asked by Anonymous in Physics

I don't understand red ox. I mean... all the numbers are supposed to balance and okay, fine, but what do they all mean? how do the molecules have charges and then change charges? and they're not even charges, they're "hypothetical" charges. so what does that mean? it's a potential to be charged +2 and they lose that potential in the reaction? and how does it all tie into reactions in general? do all reactions involve redox? and if we just balance any equation, like we were doing before we learned redox, was that all wrong because we didn't take into consideration the "hypothetical" charges? I'm sooo confused. :(

2007-09-26 10:24:51 · 3 answers · asked by Anonymous in Chemistry

HELP!

h(x) = 22x-7
__________
6-42x

calculate the domain for the function of h

2007-09-26 10:24:49 · 5 answers · asked by phresh 1 in Mathematics

I am studying for a test and this practice question has me a bit puzzled. Which equation do i need to solve this problem.

THANKS FOR THE HELP


In a 'Rotor-ride" at a carnival, people are rotated in a cylindrically walled room. The room radius is 4.6 meters, and the rotation frequence is .5 revolutions per second after the floor drops out. What is teh minimum coefficient fo static friction so the people will not slip down.

2007-09-26 10:23:48 · 1 answers · asked by Krazyk78 1 in Physics

(Equation)The perimeter of a rectnagle is 82cm. The lengths in cm of 2 ajacent sides are consecutive integers.

Write an equation for the above statement.

2007-09-26 10:22:52 · 3 answers · asked by Ichabod 1 in Mathematics

2007-09-26 10:21:23 · 11 answers · asked by Anonymous in Chemistry

2007-09-26 10:20:49 · 6 answers · asked by Michael Y 2 in Earth Sciences & Geology

- 1.3 - (- 2.0) + 0.3= ?

P.S. Sorry about the small subtraction and negetive signs.

2007-09-26 10:20:30 · 3 answers · asked by Ichabod 1 in Mathematics

http://www.forthgo.com/blog/wp-content/orange_spider.jpg

Here is the picture that we found on google but it was just in someones photo album so we dont' know what it is. It took almost an entire can of Raid to kill it and i'm not completely sure it is dead. Can anyone help?

2007-09-26 10:19:14 · 6 answers · asked by Brenda V 1 in Zoology

I mean, it's not like these places (New York, Illinois, Ohio, Pennsylvania) are close to the equator like Florida or Puerto Rico are. Why does it get so humid in these states? It seems like it should be dry because they are so far north of the equator and the tropical zones.

Please don't say it's all due to global warming either because I lived in PA in the early 80s and it was hot and humid way back then too.

2007-09-26 10:18:35 · 3 answers · asked by Anonymous in Weather

State the property or definition that justifies each of the following:

A. - (a + b) = - a + (- b)

B. a - b = a + (- b)

2007-09-26 10:18:23 · 2 answers · asked by Ichabod 1 in Mathematics

How would one find the equation for a plane that passes through the line of intersection of the two planes:
-4z=0
-18x-30y+24z=0

I can find the vector parallel to the line, which is <-5,3,0>. However, I can't find a common point between these two planes.

2007-09-26 10:17:59 · 1 answers · asked by patrickkonsor 2 in Mathematics

2007-09-26 10:17:27 · 4 answers · asked by Anonymous in Physics

alright. i need some explanation to if you could put it in your answer

You deposit $1000 that has an annual interest rate of 4.5% compounded monthly.
How much money will you have after 5 years if you dont deposit any money.
How much money will you have after 5 years if you deposit $150 every 3 months, after the initial $1000.

2007-09-26 10:14:15 · 2 answers · asked by assecro 2 in Mathematics

I am developing a robot that can serve drinks, guard during the night, and possibly greet guests. I need it to be able to distinguish between human beings and inanimate objects, so I am planning on using a PIR sensor. But is it possible for a PIR sensor to be mounted on a MOVING robot? And what about the "warm-up" time? Are there PIR sensors out there that do not need a warm-up time?

2007-09-26 10:13:59 · 4 answers · asked by Quackmaster7000 1 in Engineering

2007-09-26 10:13:48 · 7 answers · asked by Gavin J 2 in Mathematics

NaCl is soluble in hot and cold water.
C6H5COOH is soluble in hot water but not cold water.
AgBr is insoluble in water.

How do I seperate this mixture of these three solids?

2007-09-26 10:13:43 · 3 answers · asked by xxiangel 2 in Chemistry

need step by step instructions on how to solve these problems

1. y=2x sqaured + 3x-2

when x= -2

2. same problem but when x= -1

2007-09-26 10:11:04 · 5 answers · asked by knoccturnal 2 in Mathematics

2007-09-26 10:08:58 · 6 answers · asked by dbarr96321 2 in Physics

In the figure below, 'O' is the center of the circle and there are three equal angles named 'alpha'. Find 'alpha'

http://i21.tinypic.com/nzh8pl.jpg

2007-09-26 10:08:07 · 6 answers · asked by Amir 1 in Mathematics

young girl's body

2007-09-26 10:03:28 · 4 answers · asked by taniqua b 1 in Biology

2007-09-26 10:03:03 · 2 answers · asked by peace_is_forreal 2 in Zoology

2007-09-26 10:02:59 · 6 answers · asked by KateMcKenzie. 2 in Engineering