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Science & Mathematics - 30 June 2007

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Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

2007-06-30 19:25:51 · 12 answers · asked by Nicolleta 2 in Zoology

without and with passengers

2007-06-30 19:23:11 · 1 answers · asked by saeed_x61 1 in Engineering

2007-06-30 19:21:50 · 7 answers · asked by eddies_online_interests 3 in Physics

If the opposite of matter is anti matter..., would that imply that the opposite of left is right, the opposite of up is down, the opposite of 7 is -7.....Is it then possible for a real world dog (canis familiaris) to have an opposite on negative dog, or is it the opposite of a dog, a cat?...since men is the opposite of women, and what is the opposite of of transvestites?

2007-06-30 19:21:14 · 5 answers · asked by eddies_online_interests 3 in Physics

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A bag contains 5 red marbles, 7 blue marbles, and 10 green marbles. One marble is drawn at random. What is the probability that it will be either:

a. red or green?
b. blue or green?
c. red or blue?

2007-06-30 19:12:27 · 9 answers · asked by sweet_candy 2 in Mathematics

has there ever been a study on it?

2007-06-30 19:11:17 · 6 answers · asked by JOSEPH J 2 in Physics

i want teh fishiez.

2007-06-30 19:10:36 · 1 answers · asked by Sash 2 in Earth Sciences & Geology

think about it everything changes, nothing remains the same. There was the stone age, the ice age, and some more ages. The world keeps changing. We the people keep changing, Have you ever thought about what we will look like many, many years from now, that is if we are still here. There was a age when there was no man. It is meant to be. The ice will melt, the dirt will fill the hug bodies of water, everything that is now will be no more. Don't you think it is sad but true?

2007-06-30 19:06:32 · 5 answers · asked by Anonymous in Earth Sciences & Geology

is it possible to prepare potassium phosphate by titraing phosphoric acid with potassium hydroxide?

2007-06-30 19:05:07 · 4 answers · asked by Anonymous in Chemistry

its and experiment and i need some observations and im too lazy to do that so could yah help me out? what till happen?

2007-06-30 19:01:36 · 2 answers · asked by jmst 1 in Physics

The position vectors of two points A and B relative to an origin O are 3p-q and 2q-p respectively. Find, in terms of p and q, the position vector of the point C such that AC= 3BC.(AC and BC with the --> arrow on top u know what i mean)

2007-06-30 18:53:47 · 2 answers · asked by noobie 2 in Mathematics

for example, the weather report says it will be 20% humidity

2007-06-30 18:53:36 · 10 answers · asked by mrpeabody52 2 in Weather

I'm building a dollhouse. The scale is 1/2 inch= 1 foot. What is the equivalent using the metric system? A lot of the companies I'm looking at online are not in the U.S. and I'm not sure which scale to use. Thanks for the help!

2007-06-30 18:50:56 · 7 answers · asked by trippedits 3 in Other - Science

what are the processes the leaves need to undergo to get the oil....

2007-06-30 18:44:39 · 6 answers · asked by mike 1 in Other - Science

2007-06-30 18:41:15 · 11 answers · asked by Vegas♠Bound 2 in Astronomy & Space

I have measured VOC(Volatile organic compounds) emissions in ppm and this value has to be converted in terms of kg/hr for the calculations of the number of air changes per hour.

2007-06-30 18:40:12 · 4 answers · asked by Divya S 1 in Engineering

Consider the function f(x)=2x+9x^(-1). For this function there are four important intervals:(-inf, A], [A, B), (B, C] and [C, INF) where A, and C are the critical numbers and the function is not defined at B. Find A, B, C
For each of the following intervals, tell whether f(x) is increasing (type in INC) or decreasing (type in DEC). Find
(-INF, A], [A, B), (B, C] and [C, INF)
Note that this function has no inflection points, but we can still consider its concavity. For each of the following intervals, tell whether f(x) is concave up (type in CU) or concave down (type in CD). Find (-INF, B), and (B, INF)

2007-06-30 18:32:53 · 2 answers · asked by Anonymous in Mathematics

Is it something about the chemical make-up of baking soda that causes it to stop itch? Though I know it's also recommended to stop mild itch from dry skin because it's a mild abrasive, I don't see how "drying up" a bug bite would cause it to stop itching.

2007-06-30 18:26:01 · 3 answers · asked by Anonymous in Medicine

A rancher wants to fence in an area of 1500000 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?

2007-06-30 18:20:29 · 5 answers · asked by Anonymous in Mathematics

2007-06-30 18:12:23 · 3 answers · asked by important_one1 1 in Earth Sciences & Geology

A) 4(16+x^-6) / (x^3)
B) 3(4x^3+1) / (x^3)
C) 3(16x^6 -1) / (x^4)
D) 4( 16 - x^-6) / (x^3)
E) 3(4x^6-1) / (x^3)

2007-06-30 18:10:22 · 2 answers · asked by tc 1 in Mathematics

Read somewhere that there was a solar cell with an efficiency of over 40% but is that one a silicon solar cell?

2007-06-30 18:09:38 · 2 answers · asked by muhlange 2 in Engineering

(Answer only if you have actual knowledge or has advanced degree in chemistry) Is lacquer thinner safe to use with gasoline as a fuel injector cleaner? We all know those fuel injector cleaners sold on store shelves are a waste of money due to lack of effectiveness or lack of potency when mixed with a tank of gasoline. I have just heard that many racing mechanics keep it a secret that they use 2-3 gallons of lacquer thinner with a full tank of gas to clean the fuel injectors in their own racing cars to keep it in tip top like new condition! - But I thought lacquer thinner is a strong solvent that will damage all types of seals and gaskets. However, i am told gasoline is also a solvent. I also heard that acetone is a better solvent to be used because it is gentle on the hands. Can someone with actial knowledge verify what is true? Is it safe to use lacuqer thinner as a fuel cleaner? Is lacquer thinner a stronger solvent than acetone, and is acetone a stronger solvent than gasoline? Thanx

2007-06-30 18:05:20 · 2 answers · asked by Maikah 2 in Chemistry

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