Science & Mathematics - 16 August 2007

And what is your opinion about it?

2007-08-16 06:19:21 · 3 answers · asked by Khan 2 in Earth Sciences & Geology

why are there no really large arthropods? what could be engineering-type factors limiting body size?

2007-08-16 06:19:11 · 2 answers · asked by Anonymous in Biology

aerospace engineering; civil engineering, chemical engineering, mechanical engineering or any other engineering

2007-08-16 06:15:08 · 16 answers · asked by Anonymous in Engineering

My friend tells me you can see stars from the bottom of a well in daytime. Is he talking cr ap? If he isn't could someone tell me why because I've got a degree in Physics and I can't think of a reason why!

2007-08-16 06:14:15 · 10 answers · asked by tuthutop 2 in Physics

x2 + y2 = 4
x2 + y2 = 16
(x + 1)2 + (y + 1)2 = 4
(x - 1)2 + (y - 1)2 = 16

2007-08-16 06:12:11 · 7 answers · asked by zerokun4 1 in Mathematics

Explain why large earthworms come to the surface after a heavy rain?

2007-08-16 06:10:58 · 6 answers · asked by Anonymous in Biology

I just found what I thought was a dried small grayish leaf on my wall. It wasn't surprising because there is a bouquet of dried flowers nearby. It was about 2/3's an inch long, 1/3 inch wide and tapered at both ends. It was a bit spotty in color. As I was looking at it, it started to crawl slowly, and then I noticed a little brown wormy thing sticking it's head out of one end. Not a gross wet worm but more like a catepillar or centipede, withc visible segments. I scooped it up and turns out it can stick it's head out of either end. Almost cute, yet creepy, so I threw it into the garden. What the heck is this?

2007-08-16 06:10:55 · 3 answers · asked by Isabella 3 in Other - Science

If I took Adderall without a prescription a few days ago, will it show up on a drug test? I'm starting a new job, and I may be required to take a drug test. I'm worried that I won't be hired.
Please don't just guess and say yes or no, I'm looking for someone who actually knows. Thanks.

2007-08-16 06:09:13 · 6 answers · asked by junky 2 in Medicine

I just read "Flim-Flam!" from James Randi. James Randi is a famous debunker of the paranormal. In the book, he says that it is not even clear what we mean by EEG coherence between different parts of the brain during meditation. He says that it is an illusion created by defective apparatus, etc.

I checked Google Scholar on the subject (in connection with the Dalai Lama because he a popular figure) http://scholar.google.com/scholar?hl=en&lr=&client=firefox-a&q=eeg+coherence+meditation+Dalai+Lama&btnG=Search and it seems well defined and well studied, etc., not even close to the paranormal. Similar research was done with Transcendental Meditation, which is also very well known.

Why does Randi, a debunker of the paranormal, claimed so strongly that it is an "illusion", etc. Anyway, what EEG coherence should has to do with the paranormal? Has James Randi just brought confusion instead of useful information? I have no recent reference for his claims. Did he change his opinion?

2007-08-16 06:08:08 · 10 answers · asked by My account has been compromised 2 in Paranormal Phenomena

My coworker says that a hurricane is only called a hurricane if it develops over the Atlantic Ocean. Over the Pacific is called a typhoon. Is this true?

2007-08-16 06:07:37 · 10 answers · asked by Anonymous in Weather

How many segments of an earthworm have a heart?

2007-08-16 06:06:53 · 3 answers · asked by wake up 1 in Biology

How could production of a cocoon contribute to the evolutionary sucess of earthworms in their environment?

2007-08-16 06:03:42 · 2 answers · asked by wake up 1 in Biology

How does an earthworm's motion differ from that of a snake and nematode?

2007-08-16 06:02:02 · 1 answers · asked by wake up 1 in Biology

Surely its capable of doing it, but why haven't they done it to conduct experiments without any earth gravity influence?

2007-08-16 06:01:17 · 9 answers · asked by Mike C 3 in Astronomy & Space

what muscles allow the earthworm to change its length and thickness?

2007-08-16 06:01:14 · 3 answers · asked by wake up 1 in Biology

i heard it was 7 years>- but is that just a tale?

2007-08-16 06:00:47 · 24 answers · asked by Anonymous in Biology

1) does the earthworm move randomly during locomotion?
2) what do you suppose the worm is seeking or avoiding?

2007-08-16 06:00:24 · 3 answers · asked by wake up 1 in Biology

all that starts when i was child from litle girl i have feeling that i am two persons in one body but it freaks me when some times i dont know who i am and some how i feel that i live in other time period i canot find any answer pleas no jokes on me if you are not serius thank you ...

2007-08-16 05:58:48 · 9 answers · asked by argadiamou 1 in Parapsychology

where did the 1st molecule come from to make the planets? and why did the big bang happen at that particular time and not millions of years before or later?

2007-08-16 05:57:06 · 13 answers · asked by Anonymous in Astronomy & Space

Square Root of(36x^2+24xy+4y^2=Square Root of(9x^2+54xy+81y^2
then which of the following expressions could be equal to y?

If x=x^2+y^2/-2y and y is not equal to 0 then y is equal to which of the following?

If x is not equal to -3/2, 2x^3-x^2-6x/2x+3

If x and y are both positive numbers and x^2+2xy+y^2=121

kind of get nervous with problems with x^2 and all and i dont know how to solve these please explain

2007-08-16 05:53:42 · 6 answers · asked by Unknown 2 in Mathematics

Are parapodia significant to fundamental processes for polychaetes? In what ways?

2007-08-16 05:50:57 · 2 answers · asked by raj p 1 in Biology

2007-08-16 05:50:23 · 4 answers · asked by ultramaniac18 1 in Mathematics

2007-08-16 05:47:38 · 23 answers · asked by Anonymous in Mathematics

i = sqrt (-1)
i ^ 2 = -1 [this I am certain of]

i ^ 2 = i * i
= sqrt(-1) * sqrt (-1)
= sqrt (-1 *-1 ) [line A]
= sqrt (1)
= + or - 1 [which can't be right]

I think there's a problem with [line A] but I can't work out why. Can anyone help?

2007-08-16 05:46:56 · 6 answers · asked by Anonymous in Mathematics

if its NOT (!!!) a nuclear bomb...

ok, this is not a homework question and nothing to be tested in dad's old garage. I'm just asking for curiosity reasons, remembering that military aircraft are tested how they survive an EMP.
sooo how can one produce a massive EMP without polluting earth....

any idea ?

2007-08-16 05:42:59 · 6 answers · asked by blondnirvana 5 in Physics

When you have motion of a magnetic in some coils. current is formed, I wonder why.

What happens inside the coil. why their electrons can move hence have current?

2007-08-16 05:42:02 · 7 answers · asked by Anonymous in Physics

When a circuit is completed , the chemicals in the battery reacts and free electrons travell in the wire.

So It is said chemical energy is converted into electric energy.

However, whenever electricity is formed there must be magnetic energy surrounding it. SO, is chemical energy is converted into magnetic energy too/

If so , are electric energy and magnetic energy produced in ratio?

2007-08-16 05:39:00 · 3 answers · asked by Anonymous in Physics

During the Apollo 11 flight to the moon Buzz Aldrin claimed that he and Niel Armstrong had seen a strange UFO alongside their capsule.

It appears to me that for some time, perhaps since the 70's, Buzz has been making this claim that they had seen a UFO that they could not explain, but only recently in 2007 is he now saying that they were 99.9% sure it was just a panel from their own equipment. Am I right in this assumption?

2007-08-16 05:35:14 · 3 answers · asked by jrels2 2 in Astronomy & Space

2007-08-16 05:30:27 · 6 answers · asked by DIMPLE 1 in Geography

2007-08-16 05:30:05 · 7 answers · asked by Anonymous in Engineering