Science & Mathematics - 20 July 2007

O know, it may sound stupid, but I always hear a lot of people talking about it, but I dont really know what it is

2007-07-20 17:21:26 · 11 answers · asked by Alejandra 5 in Earth Sciences & Geology

Thanks

2007-07-20 17:19:39 · 8 answers · asked by Anonymous in Biology

2007-07-20 17:17:47 · 5 answers · asked by Brunette 1 in Mathematics

2007-07-20 17:17:27 · 6 answers · asked by Anonymous in Biology

Just guess a whole counting number.
I'll reveal the number later.

2007-07-20 17:15:33 · 8 answers · asked by winter_new_hampshire 4 in Mathematics

Exact measurements

2007-07-20 17:12:28 · 11 answers · asked by bkfinest777 1 in Astronomy & Space

A. Chromatin
B. Glucose
C. Protein
D. Phospholipids
E. Polysaccharides

2007-07-20 17:11:44 · 5 answers · asked by ♥Anonymous♥ 2 in Biology

seriously, i know this sounds stupid, but i really want to know.

2007-07-20 17:11:20 · 12 answers · asked by siearra 1 in Earth Sciences & Geology

Every valid scientific measurement must include a number and a?, The SI base unit for measuring time is the?, To find out whether seeds grow better in the light or dark you could put some seeds on pieces of damp paper towels and?, The freezing poing of water on the Celsius scale is?, A systematic method for gaining, organizing, and applying new knowledge is called?, 1000 mm is equal to?, The metric system is based on multiples of?, what is the measure of the pull of gravity on an object?, In 1928 the scottish biologist Alexander Fleming conducted careful research and performed controlled experiments to discover penicillin, the first drug to fight effectively against infections. Fleming followed the...A. international system, B. scientific method, C. trial and error approach, D. Celsius method..., Recorded observations are called?, The metric system is easy to use because it is based on units of ten. How many centimeters are there in 100 meters?

2007-07-20 17:11:00 · 3 answers · asked by Misty 1 in Biology

I understand that a spider can lift many times its own weight. Does anyone know how many times his own weight?

2007-07-20 17:05:57 · 5 answers · asked by AlanC 3 in Zoology

2007-07-20 17:05:20 · 3 answers · asked by Sis Zekel 1 in Botany

Is the Drake equation actually a reasonable prediction for life outside of earth? Ive heard that a lot of the variables can not be determined accurately
.

2007-07-20 17:01:52 · 9 answers · asked by jjjjjjjjjjjjjjjj 1 in Astronomy & Space

how can i extract or make the soil free of organic materials just by using house equipments...? or rather. not by using hi-tech equipments...reply asap!! thank you!!!

2007-07-20 16:53:00 · 3 answers · asked by louie 2 in Engineering

Given the equation of regression line is y = -4.5x - 5.8, what is the best predicted value for y given x = -9.3? Assume that the variables x and y have a significant correlation.

PLz help me anyone

2007-07-20 16:52:16 · 3 answers · asked by Anonymous in Mathematics

you see, it's been raining A LOT where i'm at all of a sudden. for like three weeks straight it's been nothing but clouds, rain, and potential rain. so there's been like a lot of frogs, and mosquitos, flies, crickets, and stuff like that around.
but, just earlier my brother found the strangest and scariest looking thing in our pool. it almost looks like a cocroach, except that it's a lot bigger, green with small black spots, and these creepy pinser-looking things on it's head that almost look like antennas except that they're bent so that it looks like it could pinch something really bad. it's body is oval-shaped and plain and simple it is the scariest thing i have ever seen. i honestly have never seen anything like it. anyone know what it might be??? ...please???

2007-07-20 16:45:41 · 7 answers · asked by Robyn C 1 in Zoology

Can you clerify this?

2007-07-20 16:41:24 · 7 answers · asked by Anonymous in Astronomy & Space

Chromosome abnormalities arise during meiosis or mitosis?

Please help with the question, either by finding a diagram or explaining the process to me.
Thanks

2007-07-20 16:38:46 · 2 answers · asked by Anonymous in Biology

2007-07-20 16:31:50 · 11 answers · asked by JAMES 4 in Physics

I was driving on the highway in a storm on a bridge yesterday and above my car I heard a crash and saw a flash of light all around me, simultaneously. a minute or two later my right arm started to tingle, this feeling traveled to my left arm down through my body, and then to my legs, there was nowhere to pull over, so I tried to concentrate on staying on the road. I knew I was experiencing some kind of electricity and I thought at the time my car had been struck. The heat and "burning" over my body got worse and I forced myself to raise my feet from the floor of the car and let go of the wheel. After this the semi-paralysis ebbed, but I still had limited mobility in my limbs. I shook for the next hour and was taken to the hospital to be checked out. I had no entrance or exit wounds, my car has no damage. my passenger side window was down about five inches through the whole event. What happened? If I was not struck why was I did I feel electricity go through me to such a degree?

2007-07-20 16:27:22 · 9 answers · asked by Anonymous in Weather

in 1996, the civilian labor force of the united states included 127 million people, & 5% were unemployed. how many people in the civilian labor force were unemployed?

an inspector examined 200 computer componants & rejected 19% of them. how many were rejected?

a serving traymade of brass weighs 21 ounces. this brass is an alloy of 70% copper & 30% tin. what is the weight of copper in the tray?

twenty-nine of the first forty-two presidents were lawyers. wat percentage of these presidents were lawyers?[giver answer to the nearest 1%]

2007-07-20 16:26:39 · 6 answers · asked by Anonymous in Mathematics

I just rediscovered a java program I wrote a long time ago that will quickly show you prime numbers within a selected range of numbers. For example, find all prime numbers between

800000000000001

and

800000000001001

and I discover all of these are prime:

800000000000017
800000000000039
800000000000053
800000000000057
800000000000137
800000000000167
800000000000183
800000000000221
800000000000263
800000000000321
800000000000363
800000000000371
800000000000381
800000000000407
800000000000413
800000000000417
800000000000437
800000000000491
800000000000533
800000000000611
800000000000627
800000000000653
800000000000657
800000000000687
800000000000699
800000000000779
800000000000807
800000000000911
800000000000951

And just for fun, my program took a while to compute this, but this is also prime...

3,011,992,887,555,100,289 (that's three quintillion, hahaha)

What an age we live in!

2007-07-20 16:22:39 · 6 answers · asked by what? 5 in Mathematics

I'm a freshman in college - need help answering another one of these "challenge questions"

The classic experiment by Pasteur tested the hypothesis that cells arise from other cells. In this experiment cell growth was measured following sterilization of broth in a swan-neck flask or in a flash with a broken neck:

a. Which variables were kept the same in these two experiments?

b. How does the shape of the flask affect the experiment?

c. Predict the outcome of each experiment based on the two hypotheses.

D. Some bacteria (germs) are capable of producing heat-resistant spores that protect the cell and allow it to continue to grow after the environment cools. How would the outcome of this experiment have been affected if spore-forming bacteria were present in the broth?

Appreciate the help - thanks!

2007-07-20 16:16:50 · 3 answers · asked by a_chamarthy 2 in Biology

every1 has ben really nice with their answers.
and here are some more questions.
wat is four-ninths of 81/144 square foot?
a piece of wire 27/32 inch in length is cut into 3 equel pieces, how long is each piece?
a metal plate iscontaining 3/4 square foot of material is divided into 6 equel parts. how much material[in square feet] does each part contain?

2007-07-20 16:15:31 · 8 answers · asked by Anonymous in Mathematics

equation of the line to the tangent curve at

x ln y+ 5xy=20 at the point 4,1

2007-07-20 16:14:13 · 3 answers · asked by Anonymous in Mathematics

I'm a freshman in college - need a little help answering this "challenge question" in my biology book.

Exobiology is the study of life on other planets. In recent years, scientists have sent various spacecraft out into the galaxy in search for extraterrestrial life. Assuming that all life shares common properties, what should exobiologists be looking for as they explore other worlds?

Appreciate the help - thanks!

2007-07-20 16:12:44 · 5 answers · asked by a_chamarthy 2 in Biology

I have to have a gastroscopy test done, to find out if my esophagus is functioning properly, and to see what is causing my food to become temporarily stuck, or slow moving. What should I expect during this procedure? Painful?

Have you had this done? Please give me your thoughts and opinions! Thanks a bunch!

2007-07-20 16:09:51 · 3 answers · asked by ellebekay 1 in Medicine

If lightning hits a lake or ocean, how far or wide will the strike go? Like to the bottom or half way to kill fish or what? my friends mom has always wondered about this and i would really like to know!
[! ]Thanx [!]

2007-07-20 16:09:28 · 6 answers · asked by Suɱɱeʁ 0ɟ 69 5 in Weather

r to the power of 3 divided by r to the power of 8??
i cant write it with the tiny number on this thing!

2007-07-20 16:09:14 · 9 answers · asked by golden<3 2 in Mathematics

A person 5-ft tall casts a shadow 3-ft long. At the same time, a nearby tree casts a shadow 38-ft long. Find the height of the tree.

Answer: The tree's height is_____ ft long. (Round to the nearest tenth.)

2007-07-20 16:08:28 · 12 answers · asked by hllywdbabe7 1 in Mathematics

1. Factor:
3y^2 - 4y - 20
Which of the following is one of the factors?

(3y - 10)
(y + 3)
(3y + 2)

2. Solve by factoring: One of the solutions to the quadratic equation 2x^2 - 7x + 5 is (5/2). What is the other solution? (Type only the numerical value of the other solution. Do not use any variables or skip any spaces.)

3. Factor 6x^2 + 5x - 6
Show all work

4. Factor:
x^2 - 5x - 6
Which of the following is one of the factors?

(x + 2)
(x + 5)
(x - 6)

5. Solve by factoring: One of the solutions to the quadratic equation x^2 + 3x - 28 is -7. What is the other solution? (Type only the numerical value of the other solution. Do not use any variables or skip any spaces.)

6. What is the Greatest Common Factor for the given polynomial?
5x^3y^2 + 15xy^2 + 25x^2y^3

5x
5xy
5xy^2
prime

7. Factor completely:
8x^4 + 4x^3 - 24x^2

4x^2(2x^2 + x – 6)
4x^2(2x – 3)(x + 2)
4(2x^4 + x^3 - 6x^2)
prime

8. 2x^2 + x - 3
9. 2x^2 - 5x - 3
10. 2x^2 - x - 3
11. 4x^2 - 20x + 25
12. 4x^2 - 15x - 25

2007-07-20 16:04:33 · 3 answers · asked by Anonymous in Mathematics