Science & Mathematics - 3 September 2007

2007-09-03 12:33:27 · 14 answers · asked by Anonymous in Astronomy & Space

Are there any lifefroms out in space

2007-09-03 12:32:43 · 12 answers · asked by adrian34_c 2 in Astronomy & Space

the rubber worn from tires mostly enter atmosphre as pollution. Estimate how much rubber (kg) is put into the air in US every year. An estimate for a tire tread's depth is 1 cm when new and the density of rubber is about 1200 kg/m^3

2007-09-03 12:30:01 · 1 answers · asked by Anonymous in Physics

That is what I am trying to do, right now. But I am already beginning to struggle, and I just want to make sure that I can do this class if possible without ever having a background in Calculus.

2007-09-03 12:27:35 · 10 answers · asked by Emily 1 in Mathematics

if u dig like REALLY REALLY REALLY far down in the earth is there a layer of diamond like dirt but with diamond????

2007-09-03 12:27:06 · 3 answers · asked by Niko Bellic 2 in Earth Sciences & Geology

A website I recently visited described the Cassini Probe flight as requiring two loops around Venus and one around the Earth prior to its flight to Saturn because no launcher was powerful enough to send the probe on a direct route to Saturn. Does this mean that the loops reduced the required flight time, or does it mean that we are unable to launch a probe that can fly direct to Saturn? What was or is the limiting factor? I was under the impression that once the probe was on its way through space there was nothing to stop its progress on such a mission.

2007-09-03 12:24:13 · 6 answers · asked by zahbudar 6 in Astronomy & Space

A small 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 103 N/C. If the ball is in equilibrium when the string makes a 30 angle with the vertical, what is the net charge on the ball?

2007-09-03 12:23:12 · 1 answers · asked by Anonymous in Physics

Would blood received from a female to a male during a blood transfusion result in gaining female charateristics by receiving female hormones even though for a short time.and would a female receiving a blood transfusion from a male receive male hormones resulting in likewise results.

2007-09-03 12:21:32 · 3 answers · asked by superjoezzz@sbcglobal.net 3 in Medicine

Solve and check the following systems by graphing. Show steps. Write equations and points plotted on graph

1.(x – y = 2 )
(x + y = -4)


2.(x + 3y = 6)
(x + 3y = -3)


3.( y = -2x)
(y – 3x = 0 )

For each of the following problems, (a) choose a variable and indicate what it represents, (b) set up a system of equations to represent the problem described, (c) solve the equations

10.Find two numbers whose sum is 131 such that one number is 5 less than three times the other number.

11.Cynthia has 30 coins, consisting of dimes and quarters that total $5.10. How many coins of each kind does she have?

I have no idea how to do this. THANKS FOR ANY HELP!!!

2007-09-03 12:19:55 · 2 answers · asked by crackr 3 in Mathematics

2007-09-03 12:19:05 · 18 answers · asked by generalche22 3 in Astronomy & Space

The idea that God set up the laws of nature and the structure of the Universe in such a way that all that is spontaneously blossomed into existence is more amazing and spectacular then spiting on the ground and making Adam. The more I learn about Evolution and Science, the more I glorify God for it.
Enoch was right when he described evolution in the word of God.

2007-09-03 12:18:19 · 4 answers · asked by Anonymous in Biology

I manage a drive-in movie theatre so I am very aware of what time it's dusk during the summer season. Over the entire summer, dusk time changed by no more than a few minutes from week to week. However, a few weeks ago I was at the drive-in on Sunday night at about 8:45 and it was just barely dark enough to start the movie. By the following Friday (5 days later) it was suddenly dark enough by about 8:20.

Can anyone shed some light on why dusk time would change so drastically in just a few days when it normally only changes by 5 minutes over a week. Could it has something to do with the sun's position relative to a distant mountain range or something similar?

For what it's worth, I live in northern California about 3 hours north of the Bay Area.

2007-09-03 12:05:46 · 4 answers · asked by Justin H 7 in Other - Science

1. a rectangle's length is 2ft less than 3 times the width. if the perimeter is 44ft what is it's length ?

2. square root of x^5

3. Add square root of 75x^2 + square root of 12x^2

4. for f(x)=3x+2

5. Factor 3x^3-6x^2

6. factor x^3 +3x^2 +2x

please help and show the work on how you got the answers

2007-09-03 12:04:59 · 3 answers · asked by suferchick 2 in Mathematics

started to move faster than average or slower than average? Why do molecules have a tendancy to move and why cant they stop? Would life sese to exist if molecules reached absolute zero motion?

2007-09-03 12:03:42 · 4 answers · asked by Anonymous in Physics

That is the question I have for part of a chemistry lab, but here are the specifics on what exactly I'm talking about.

We dissolved a silver-copper alloy in nitric acid (HNO3) and added salt (NaCl) so that the silver from the alloy would form a silver chloride precipitate. The point of the lab was to filter this silver chloride precipitate out of the solution so we could find its mass, and then calculate how much silver was in the original alloy.

The question is, why couldn't we have only used hydrochloric acid (HCl) instead to dissolve the alloy and precipitate the silver? Would the alloy still dissolve in the hydrochloric acid so that only an AgCl precipitate forms?

2007-09-03 11:57:31 · 2 answers · asked by Anonymous in Chemistry

2007-09-03 11:57:04 · 10 answers · asked by Anonymous in Astronomy & Space

depending on where it hit, what would happen to our vast stores of information? I mean, depending on what got burnt up and who got killed, we might lose some of the most valuable pieces of information in the world. If the comet hit the US, we'd lose the Declaration of Independence. If it hit Egypt, say "bye bye" to the pyramids. If it hit Japan, sayonara Microsoft. (Well, Microsoft Japan. Although the Microsoft in America would probably be wiped out by the tsunami from Japan.) We might also lose valuable information about science and technology. That's a scary thought! Is there nothing we can do? I thought so at first. But then I got to thinking, "What if we stored vast amounts of extremely important information on 500 gigabyte hard drives?" I know about the EMP blast from the comet, so of course they would all be surrounded by Faraday cages, and buried underground so they wouldn't be torched by the heat. So what do you think? Should we start collecting information? Thanks.

2007-09-03 11:52:53 · 16 answers · asked by Need answers! 1 in Astronomy & Space

Hi! I have a trigonometry question that has been driving me crazy because I can't figure it out! I've tried for nearly 3 hours to no avail! The problem says:

In the figure, angle B is a right angle and the line segment AD bisects angle A. If AB = 10 and BD = 2, find the exact value of CD.

Now I know that this has to do with half angle/double angle identities, but I'm not sure what else to do at this point. I drew the figure on my Paint program on the computer and I uploaded it to photobucket so you can get a visual of what it looks like from my math book. :)

Anyway, I've tried EVERYTHING!!! But I still can't get it! I would copy over all my work here so you can see what I did and where I went wrong, but it took up 17 pages of paper, so that would be too much for me to transcribe. Can you PLEASE PLEASE PLEASE help with this?!?! I'm desperate! Thank you so much!

Here's the link to my drawing:

http://i223.photobucket.com/albums/dd205/OkayThanksToYou/trigproblem.jpg

2007-09-03 11:52:44 · 6 answers · asked by Anonymous in Mathematics

(meaning it can concentrate in one spot), then why do they say your air would be sucked out from your lungs in space?

2007-09-03 11:52:35 · 11 answers · asked by Anonymous in Astronomy & Space

2007-09-03 11:50:13 · 6 answers · asked by Anonymous in Zoology

1- structure that packages substances in the cell 2-produce the spinal fibers during cell division 3- structure involved in protein synthesis. It contains ribosomes 4-found in centrioles, cilia and flagella 5-site for protein synthesis. I have my answers but I don't know if they are right thanks terri

2007-09-03 11:49:43 · 1 answers · asked by Terri L 2 in Biology

2007-09-03 11:47:32 · 2 answers · asked by josh.isaiah 2 in Mathematics

I was not sure if this is trick question.
answers are
1) 18.2
2)54.6
3)670
4)6030

i think this is a trick question. I know it could be 18.2 inches cubed or 6030 inches. So i don't know which would be the correct answer, if you could please explain thanks!

2007-09-03 11:43:21 · 3 answers · asked by ccutestuff2001 2 in Mathematics

2007-09-03 11:42:33 · 4 answers · asked by Anonymous in Biology

why some people are lactose-intolerant? i mean is milk that bad for us to dgiest it? i have no problem with milk products..but my parents are lactose-intolerant so i was wondering what might be the cause behind it?

2007-09-03 11:39:43 · 3 answers · asked by Shimmy Shimmy 1 in Biology

And why do we feel the smel of it when we eat other foods?

Thank you for your answer! :)

Have a wonderful night/day! :)

2007-09-03 11:34:34 · 14 answers · asked by Anonymous in Other - Science

very clever bloke used freedom of information act to obtain information explained very well. but icant find it any where

2007-09-03 11:34:34 · 2 answers · asked by gb8o 1 in Astronomy & Space

Planes flying east - west travel at about the same speed as planes flying west - east (ignoring the wind factor). Why doesn't the Earth's rotation make more difference?

2007-09-03 11:33:28 · 7 answers · asked by Anonymous in Physics

2007-09-03 11:31:11 · 13 answers · asked by {♥}ChElSeA{♥} 4 in Mathematics

why do people believe in the "Big Bang" Theory...its so pointlesss....the real questiojn o the "big bang" theory is....were did all that dust come from? ...i mean it had to be created by someone or something...thats why i believe in the truth that GOD created the earth is 6,000 to 10,000 years old...NOT billions of years old...and if you contradict me...i want proff that the "big bang" theory is true... and it better be good...

2007-09-03 11:30:30 · 30 answers · asked by Anonymous in Astronomy & Space