Science & Mathematics - 29 November 2007

I found a tiny protist-like organism. It is made up of four tiny mircoscopic ball-shaped things that form a tiny square. What is it? It was around some scenedesmus. Serious answers only please. If you don't know, don't answer.

2007-11-29 17:09:17 · 2 answers · asked by Anonymous in Biology

The altitude of a triangle is increasing at a rate of 1000 centimeters/minute while the area of the triangle is increasing at a rate of 1000 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 8500 centimeters and the area is 83000 square centimeters?

2007-11-29 17:08:36 · 3 answers · asked by Anonymous in Mathematics

A rancher wants to fence in an area of 500000 square feet in a rectangular field and then divide it in half with a fence down the middle parallel to one side. What is the shortest length of fence that the rancher can use?

2007-11-29 17:06:18 · 1 answers · asked by Anonymous in Mathematics

2007-11-29 17:05:38 · 5 answers · asked by Anonymous in Astronomy & Space

Have I done this right? y = m x + b

b = 11 1/2 x = --6 and y = 5

to graph it, do it start at 11 1/2 on the x axis and then down 1 and over 2?
thanks

2007-11-29 16:56:02 · 3 answers · asked by Boo Radley 4 in Mathematics

Identify the open intervals on which the function is increasing or decreasing

y = x + (4/x)

2007-11-29 16:55:25 · 3 answers · asked by Anonymous in Mathematics

hi i want to ask how i find the exponential function of a graph when the y -int is (0,4) and a given point is (5,10)
y=k*a^x
i need to find k and a
any help is appreciated thanks!

2007-11-29 16:50:12 · 4 answers · asked by John 1 in Mathematics

I'm actually making a motor... for our physics project...
but I've got a problem about it.. and I need answers immediately.. as soon as possible...

The motor moves fast because of the flow of current.. so I need to reduce its flow to lessen its turn...

the motor's shaft moves as fast as the electric fan moves... so I need to lessen it.. what can I use? and please also explain how will it help me.. thanks!!!

2007-11-29 16:45:24 · 15 answers · asked by ~§~ 3 in Physics

2007-11-29 16:45:11 · 2 answers · asked by Bobby S 3 in Mathematics

2007-11-29 16:44:22 · 1 answers · asked by enzo 1 in Zoology

I was just curious if there is more ghostly activity in colder weather then in warmer weather or vice versa.

2007-11-29 16:41:41 · 21 answers · asked by Death Girl Am 6 in Paranormal Phenomena

Original Question:
Two sides of a particular isosceles triangle are 6 and 13 unites. What is the area of this triangle? Express your answer in simplest radical form.

2007-11-29 16:40:26 · 3 answers · asked by Bobby S 3 in Mathematics

what can a graph of force vs. time tell you

2007-11-29 16:35:21 · 4 answers · asked by Joe T 1 in Physics

I need to factor out this equation completely.

x squared-21x+84=0

I know how to do it, I just can't find the factors of 84 that will add to -21. Help, please!

2007-11-29 16:33:58 · 6 answers · asked by Joe. 1 in Mathematics

An 8kg ball is suspended .6m at the end of a horizontal bar which is attached to a vertical pole. The horizontal bar extends .8 meters from the top of the vertical pole. From the top of the pole, there is a second string that extends down to the ball at a 30 degree angle. The pole is rotating at a constant speed such that the linear velocity of the mass is 2.3 m/s. What is the tension of the vertical wire? Please show steps and formulas used to get solution.

2007-11-29 16:22:56 · 1 answers · asked by Anonymous in Physics

2007-11-29 16:19:56 · 12 answers · asked by rolrox98 1 in Mathematics

pleace cent about plant image and details

2007-11-29 16:19:47 · 1 answers · asked by Lahir M dr 1 in Botany

2007-11-29 16:16:52 · 3 answers · asked by ruby 2 in Mathematics

Is it correct to assme that mind not only passively interprets whatever is happening in the brain ,but also actively develops the brain?

2007-11-29 16:16:07 · 4 answers · asked by ntadepalli 2 in Other - Science

tan pi/3


any help would be appreciated. thank you! :)

2007-11-29 16:15:50 · 2 answers · asked by Anonymous in Mathematics

During synthesis of RNA, which strand of DNA is used? I'm really confused. The promoter region is where the nucleotides ATG are. Is that on the 5' to 3' strand or 3' to 5' strand? Is only the strand with the promoter region involved? If RNA Polymerase adds complimentary nucleotides starting with the codon AUG, wouldn't that mean the opposite DNA strand of the "ATG" strand be used instead of the "ATG" strand?
So in nutshell, I'd like to know which strand of DNA is relevant during transcription and which strand of DNA the promoter is located on.

2007-11-29 16:15:12 · 4 answers · asked by Anonymous in Biology

we can add almost anything to inside of metal can to hold washers, but the objective is to make it roll as fast as possible down ramp.... HELP!

2007-11-29 16:10:38 · 4 answers · asked by Isabel 2 in Physics

2007-11-29 16:10:22 · 3 answers · asked by sydney 2 in Botany

If the Earth was void of trees, would there still be wind?

2007-11-29 16:09:54 · 11 answers · asked by Anonymous in Earth Sciences & Geology

2007-11-29 16:09:42 · 3 answers · asked by Anonymous in Mathematics

If you could show your work, that would be great!
A football punter wants to kick the ball so that it hits the ground 50 meters from where it is kicked and so that the ball is in the air 4 seconds. At what angle and with what initial speed should the ball be kicked? Assume that the ball leaves the kicker's foot from and elevation of 1 meter.

2007-11-29 16:08:24 · 1 answers · asked by Anonymous in Physics

need in 30 mins... homework!;)

2007-11-29 16:07:48 · 11 answers · asked by Anonymous in Astronomy & Space

Calculate [OH -], pOH, and pH for each of the following.
(a) 0.00035 M Ca(OH)2
[OH -]
M
pOH

pH

(b) a solution containing 19 g of KOH per liter
[OH -]
M
pOH

pH

(c) a solution containing 190.0 g of NaOH per liter
[OH -]
M
pOH

pH

2007-11-29 16:05:54 · 1 answers · asked by e36m3_98 1 in Chemistry

2007-11-29 16:02:45 · 3 answers · asked by Alan G 2 in Mathematics

2007-11-29 16:01:37 · 12 answers · asked by Anonymous in Mathematics