Science & Mathematics - 1 November 2007

2007-11-01 12:26:00 · 1 answers · asked by Anonymous in Botany

It needs to be shaped either like a square or rectangle, NO circles or any other shapes that the measurement cant be read accurately for volume.

it does not have the be the same height all around...


im looking for it to hold atleast 50 pennies.

2007-11-01 12:25:44 · 7 answers · asked by Anonymous in Engineering

2007-11-01 12:24:22 · 3 answers · asked by Anonymous in Mathematics

What maximum output would you expect from a wind turbine wiht a blade of diameter 20ft in a 15-mph wind?

2007-11-01 12:22:47 · 1 answers · asked by gods1princesschanel 1 in Engineering

2007-11-01 12:22:17 · 8 answers · asked by briana 1 in Zoology

2007-11-01 12:21:44 · 3 answers · asked by jamirah h 1 in Botany

2007-11-01 12:21:29 · 2 answers · asked by Anonymous in Earth Sciences & Geology

Factor the following polynomial completely.
22x5 - 154x2


Factor the following polynomial completely.
1 x^2 - 4 x + 4


Factor the following polynomial completely.
121 x**2 - 25


I've tried them numerous times and I have no idea what I'm doing wrong.... any help would be greatly appreciated....

2007-11-01 12:20:04 · 5 answers · asked by Brandon M 1 in Mathematics

leaves on trees, blades of grass, waves in the water, or grains of sand

2007-11-01 12:19:49 · 14 answers · asked by Evan M 1 in Botany

A swimmer wears a heavy belt to make her average density exactly equal to the density of water. Her mass, including the belt, is 55 kg.
(a) What is the swimmer's weight in newtons? (total weight, including belt)
_____ N
(b) What is the swimmer's volume in m^3?
_____m^3
(c) At a depth of 2 m below the surface of a pond, what buoyant force acts on the swimmer?
______N
What net force acts on her?
_____N

2007-11-01 12:18:13 · 2 answers · asked by TheLostOne 3 in Physics

idk how much 1 m&m weighs and i need it in metric

2007-11-01 12:15:23 · 3 answers · asked by Onlyone 1 in Physics

2007-11-01 12:14:22 · 5 answers · asked by Anonymous in Mathematics

Calculate the pH of a mixture containing equal volumes of
0.120 M HC3H5O2 ( use Ka = 1.30 x 10 -5 ) and 0.120 M NaC3H5O2 .

any help would be greatly appreciaTEd!

2007-11-01 12:11:07 · 2 answers · asked by nietzsche 1 in Chemistry

Calculate the solubility in grams per liter of Hg2Cl2,
Ksp = 1.10 x 10-18 ,

any help would be greatly appreciaTEd!

2007-11-01 12:10:13 · 2 answers · asked by nietzsche 1 in Chemistry

1.> Two air track carts move toward one another on an air track. Cart 1 has a mass of 0.53 kg and a speed of 0.9 m/s. Cart 2 has a mass of 0.56 kg.
(a) What speed must cart 2 have if the total momentum of the system is to be zero?

(b) Since the momentum of the system is zero, does it follow that the kinetic energy of the system is also zero?
yes or no
(c) Verify your answer to part (b) by calculating the system's kinetic energy.

2.> A honeybee with a mass of 0.175 g lands on one end of a popsicle stick. After sitting at rest for a moment, the bee runs toward the other end with a velocity 1.29 cm/s relative to the still water. What is the speed of the 4.65 g stick relative to the water? (Assume the bee's motion is in the negative direction.

2007-11-01 12:09:27 · 1 answers · asked by Anonymous in Physics

When giving blood, usually 1 pint.....how does your body know it's gone? Then how much to remake? When you fill a balloon with water and tie it off, if you take a pint from it there is no way to refill it. Nor does it know. So how does our heart know to produce blood or not? and How much?

2007-11-01 12:08:22 · 2 answers · asked by WAIGHT 4 in Biology

In my years as an avid astronomy fan, I have found the following to be very common misconceptions:
1) People think the Pleiades are the little dipper.
2) People are surprised to find out that we can see Saturn easily with the naked eye.
3) Many think that Polaris is the brightest star in the sky.
4) Most have almost no concept of the vast differences in the distances of stars we see.

I'm interested what other astronomers, professional or informed amateur, have found that most casual observers misunderstand.

2007-11-01 12:07:13 · 14 answers · asked by Brant 7 in Astronomy & Space

2007-11-01 12:07:07 · 1 answers · asked by Anonymous in Botany

102. mL of a solution of quinine contains 206.0 x 10-3 mol of quinine. If this is titrated with 0.0200 M HCl, what is the pH at the stoichiometric point? Quinine is monobasic with
Kb = 7.90 x 10-6

any help would be greatly appreciated!

2007-11-01 12:06:32 · 1 answers · asked by nietzsche 1 in Chemistry

2007-11-01 12:05:04 · 3 answers · asked by Chrisitna 1 in Mathematics

how do you find acceleration? is it like distance over time... or distance times time... idk ...pleasee helpp!

2007-11-01 12:01:03 · 3 answers · asked by Anonymous in Physics

1) d ((e^x)/(x^2))

2) d (x+ 2 sinx)

2007-11-01 12:00:40 · 1 answers · asked by Caramel 2 in Mathematics

I'm trying to find the projection of the vector (1,1,1) onto the affine plane 2x+3y-z=12, but I am having some problems.

I know that the standard form of the vector should be written like:
1(2x-0)+1(3y-0)-1(z-0), but that's all I can figure out.

Thanks for your help.

2007-11-01 11:59:50 · 2 answers · asked by Defcon6 2 in Mathematics

2007-11-01 11:59:23 · 1 answers · asked by Patricia w 1 in Physics

Another one. Math Ptoject due tommarrow. Please we've all been there. HELP

2007-11-01 11:59:05 · 9 answers · asked by Anonymous in Mathematics

explain ur reasons

2007-11-01 11:56:18 · 4 answers · asked by Anonymous in Biology

I need its temperature, pressure, relative salinity to the rest of the ocean, and other hazards that are in Galapagos. I also have to include what animals live in the Galapagos hydrothermal vents, how it was geologically formed, and the sediments that the travelers will encounter...

THANK YOU SO MUCH! THIS MEANS SO MUCH TO ME!

2007-11-01 11:55:25 · 1 answers · asked by Anonymous in Earth Sciences & Geology

2007-11-01 11:54:16 · 6 answers · asked by ramoniegirl07 1 in Mathematics

Use differentiation to show that the sequence is monotonic and classify it as increasing or decreasing.

{arctan n} n=1 to infinity

2007-11-01 11:51:13 · 1 answers · asked by Gary 2 in Mathematics

the poison type? like foxglove (digoxin) or like poison ivy or something else? With the people who eat it and live are they risking liver or kidney failure or something?

2007-11-01 11:51:04 · 1 answers · asked by Anonymous in Botany