Science & Mathematics - 22 July 2007

2007-07-22 03:50:07 · 5 answers · asked by bianca 1 in Mathematics

Many countries are spending a fortune to search for life on other planets while there other life( people) on this earth who dont have anything to eat.(in africa and many other region) WHY SO MUCH WASTE???
what will they do IF they find some kind of life on the other planets???????????? of Course THEY WILL SPEND MORE MONEY ON THEM. why whY whY

2007-07-22 03:47:40 · 6 answers · asked by Anonymous in Astronomy & Space

2007-07-22 03:40:21 · 7 answers · asked by Thank You 1 in Medicine

Not long ago we stayed away from ghosts and haunted places.Now they run through graveyards and houses.Holding microphones,cameras and videos.Snapping pictures taking readings,seems like a nuisance.Are they treating ghosts like "Britney Spectres"?

2007-07-22 03:38:27 · 2 answers · asked by Dr. NG 7 in Paranormal Phenomena

Just for curiosity, how good an approximation can you find for π using an nth-root of an integer (a^1/n), or ( a^m/n).
State your accuracy (no. of decimal places).

It's surprising that you can find small numbers that do a pretty good job:

10^1/2 = 3.16 (1dp accurate)
31^1/3 = 3.1414 (3dps)
97^1/4 = 3.14 (2dps)
306^1/5 = 3.1416 (4 dps)
3020^1/7 = 3.141549 (3 dps)
29809^1/9 = 3.141591 (5 dps)
...

To find such approximations, simply raise π^n for some n, round up/down to nearest integer, then take the nth root.

(This doesn't really have much application, unless you can suggest one where π appears exponentiated, or you really need an approximation to (say) compute the volume of a hyphersphere :) )

2007-07-22 03:37:52 · 3 answers · asked by smci 7 in Mathematics

2007-07-22 03:34:41 · 9 answers · asked by james m 1 in Astronomy & Space

1.) Baby tiger: http://www.myetv.org/about_etv/pressroom/statefair/2004/images/BabyTiger.jpg

2.) Baby fox:
http://www.thecuteproject.com/images/items/1042.jpg

4.) Baby mountain lion:
http://www.news.ucdavis.edu/photos_images/news_images/04-2005/cub_lg.jpg

5.) Baby Gorilla:
http://grasp.rucc.net.au/images/gorilla_1_ds.jpg

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2007-07-22 03:30:08 · 13 answers · asked by Anonymous in Zoology

If Darwin was right and humans were actually monkes, WHY THERE ARE MONKEYS LEFT BEHIND ?!

2007-07-22 03:27:59 · 14 answers · asked by Anonymous in Biology

did jesus marry mary magdeline or not ... i dont think he did .. what do you think ?

2007-07-22 03:27:38 · 19 answers · asked by Anonymous in Engineering

Whenever it rains really good, all these flying bugs come out all over the place! Why and what are they?

2007-07-22 03:20:54 · 6 answers · asked by Anonymous in Zoology

Please explain why DC is supposed to have lower losses than AC for power transmission over very long distances?
(What is the threshold distance? as a function of voltage? and what are the losses? Which countries do this?)

(I'm an MSEE, so you can assume knowledge of two-ports and transmission lines if you want, or some links.
But please include a paraphrase explanation with typical numbers, which everyone can understand)

2007-07-22 03:19:16 · 8 answers · asked by smci 7 in Engineering

- 5.95 - (- 5.1 - -5.1)
- 10.2 - +10.2

2007-07-22 03:13:16 · 4 answers · asked by Anonymous in Mathematics

2007-07-22 03:11:22 · 3 answers · asked by loconurse 1 in Earth Sciences & Geology

how was it formed, what type of rock is it and what are the minerals which compose it?

2007-07-22 03:08:07 · 3 answers · asked by shaqy 1 in Earth Sciences & Geology

Apart from the turning lights and electrical appliances off...

2007-07-22 02:55:32 · 14 answers · asked by xlarosedepurx 1 in Other - Science

From what i understand you can't change the hz an appliance gives off and I know if you plug a 60hz appliance into a 50hz socket that it could potentially cause a burnout on the appliance, but what happens if it's the other way around? Providing you have the right adaptor, and the right transformer for the right voltage.

Am i right to assume it would be the opposite and instead of possibly causing a burnout the product will be less efficient?

2007-07-22 02:55:17 · 8 answers · asked by Qqq 1 in Engineering

what is the use of standard deviation and variance means?

2007-07-22 02:54:25 · 2 answers · asked by Anonymous in Mathematics

I just read that in a pop science book and I wondered if any of our Biology friends could corroberate it for me?

2007-07-22 02:49:53 · 6 answers · asked by tuthutop 2 in Biology

+5.1 - +6.6 =
-7.3 - +3.7=
-8.1 - 5.1 =
-3.1 - (+0.4- +6.1)

2007-07-22 02:44:11 · 8 answers · asked by Anonymous in Mathematics

Is it true that we have all of our ancestors genes (from the first bacteria)? I've also heard that human embrio grow tails then reabsorb it later, and that there are few whales that were found posessing hind legs (possibly from abnormal reactivation of their ancestor's genes).

2007-07-22 02:37:39 · 8 answers · asked by CR s 1 in Biology

this is in connected with Symbiotic Relationship.

2007-07-22 02:32:15 · 9 answers · asked by Michael Ray G 1 in Botany

This is is connected with Symbiotic Relationships.

2007-07-22 02:30:21 · 6 answers · asked by Michael Ray G 1 in Biology

2007-07-22 02:21:39 · 6 answers · asked by samuraihero1992 2 in Physics

2007-07-22 02:18:11 · 17 answers · asked by ashley 1 in Earth Sciences & Geology

Is this just a myth or are they realy working on this?

2007-07-22 02:08:39 · 3 answers · asked by kenneth k 1 in Other - Science

2007-07-22 02:07:16 · 5 answers · asked by Mellie G 3 in Zoology

2007-07-22 02:06:46 · 2 answers · asked by charmaine d 1 in Engineering

2007-07-22 02:05:09 · 5 answers · asked by kanisha_cutejune 1 in Physics

PQR is a triangle right angled at P and M is a point on QR such that PM┴QR. Show that PM² = QM * MR

I got the answer, but it took soooo many steps! No using similarity. We must only use the Pythagoras theorem. My teacher says we can do it in less than 6 steps! I used a whopping 13 steps to get it! Help. Is there a shorter way?

2007-07-22 02:03:20 · 5 answers · asked by Akilesh - Internet Undertaker 7 in Mathematics

2007-07-22 01:46:14 · 5 answers · asked by Anonymous in Weather