Science & Mathematics - 27 July 2007

2007-07-27 04:19:52 · 2 answers · asked by Anonymous in Mathematics

I have heard mixed answers about whether a normal physical exam includes a urine test where they check for THC.

2007-07-27 04:18:42 · 5 answers · asked by freedom.peace_love 1 in Medicine

Yesterday I came across a very interesting question at

http://answers.yahoo.com/question/index;_ylt=AiZ_9436.iY9WMwEiVbaSGTsy6IX?qid=20070726145922AAp4oEw&show=7#profile-info-9ea5b56c0000f60ba86311a887f43581aa involving closures of open balls. Then, I started wondering about a related prolem. Let X be a metric space with metric d. Is there any necessary or sufficient or both condition so that the interior of a closed ball be the open ball of same center and radius?

In the euclidean spaces R^n, this is always true. But if you take R^n with the discrete metric, than this doesn't hold. The closed ball of center at 0 and radius 1 is the whole space and coincides with its interior. But the open ball of center 0 and radius 1 is {0}.

Is anyone interested in thinking about this?
Thank you
Steiner

2007-07-27 04:17:41 · 3 answers · asked by Steiner 7 in Mathematics

where i is the imaginary unit, such that i = √(-1)

2007-07-27 04:06:09 · 5 answers · asked by WOMBAT, Manliness Expert 7 in Mathematics

Compare the sources, benefits and disadvantages of chemical, solar ,and nuclear energy.

2007-07-27 04:04:58 · 2 answers · asked by Anonymous in Chemistry

2007-07-27 04:02:10 · 7 answers · asked by Anonymous in Mathematics

2007-07-27 03:58:18 · 7 answers · asked by Philidor 5 in Astronomy & Space

2007-07-27 03:58:06 · 9 answers · asked by r o 1 in Geography

2007-07-27 03:56:47 · 17 answers · asked by Anonymous in Mathematics

Forgetting the other planets for the moment, it would seem that the sun is pulled at least a few feet by the earth.

2007-07-27 03:55:31 · 15 answers · asked by Anonymous in Astronomy & Space

I find it strange how aliens are always seen b4 disasters and are in humanoid form? Could it be us from the future? would also explain alot about abductions and their loss of time while away!

2007-07-27 03:52:08 · 18 answers · asked by Ady P 1 in Astronomy & Space

can any one out there explain why the moon sometimes look HUGE and other times looks wee small?

i know its something to do with the angle we view the moon from, i.e. when the moon is low we can compare the size with a building therefore it looks BIG..

can some Boff, put it in plain English plzzzzz!

thanks

2007-07-27 03:51:18 · 11 answers · asked by bluecow 5 in Astronomy & Space

give me detail report about cathodray tube. (or) give me website address about to know about better in physical science of 10th ICSE.especially in the lesson producing &using stream of electrons.

2007-07-27 03:48:10 · 1 answers · asked by priya d 1 in Physics

OMG, profile them all!!!

2007-07-27 03:45:21 · 6 answers · asked by Anonymous in Astronomy & Space

Is it Sci-Fi that sound can cause damage to an object?

2007-07-27 03:45:02 · 18 answers · asked by Ady P 1 in Physics

1. Write in simplest form:
x^2 - 6x + 9 / (over) x - 3

2. Subtract. Write your answer in simplest form:
9 / (over) y - 7 minus 1 / (over) y + 1

2007-07-27 03:43:05 · 6 answers · asked by casper5 3 in Mathematics

Show your work: (type x-square as x^2 unless using a superscript feature).

b) Use microsoft excel to plot the points found in part a and to sketch the graph.

2007-07-27 03:40:27 · 5 answers · asked by yuleydis77 1 in Mathematics

2007-07-27 03:34:02 · 8 answers · asked by Anonymous in Biology

2007-07-27 03:31:29 · 11 answers · asked by manish u 1 in Physics

Anyone else seeing this is is it just an illusion?

2007-07-27 03:28:36 · 9 answers · asked by ? 5 in Weather

I don't know about anywhere else but in Houston, Texas it has everyday basically.

2007-07-27 03:21:02 · 8 answers · asked by Britney 1 in Weather

2007-07-27 03:15:26 · 8 answers · asked by williams.adrienne 1 in Mathematics

2007-07-27 03:13:36 · 4 answers · asked by Anonymous in Geography

2007-07-27 03:11:03 · 5 answers · asked by Anonymous in Astronomy & Space

gernal knowldge

2007-07-27 03:08:02 · 13 answers · asked by rishi 1 in Astronomy & Space

2007-07-27 02:53:51 · 6 answers · asked by williams.adrienne 1 in Mathematics

2007-07-27 02:48:22 · 11 answers · asked by williams.adrienne 1 in Mathematics

...reproduce, then what is the point, when humans were created their must have been a reason for it, if this was to reproduce, then we have children, and then they do the same, but their doesnt seem to be any sort of goal at the end of it. Does anyone see what i mean?

2007-07-27 02:47:54 · 15 answers · asked by Anonymous in Earth Sciences & Geology

This is a debate I had with my co-workers. At first I thought they were messing around, but it turns out they were really serious. They thought that the universe was growing because of all the new planets, constellations, stars, and whatnot that have been discovered recently. They also claimed that science says certain galaxies are now further away from each other than they used to be. It was my contention that the universe isn't really growing; but that it is our understanding and ability to measure such things that is doing the growing. After all, Copernicus couldn't see nearly as much of space as we. I don't believe that space can actually grow ( I personally think it is infinite), but I do believe that we haven't nearly begun to discover what's out there.

2007-07-27 02:47:09 · 9 answers · asked by m4onixtj 1 in Astronomy & Space

2007-07-27 02:44:26 · 3 answers · asked by selva s 1 in Engineering