Science & Mathematics - 11 September 2007

2007-09-11 02:35:11 · 0 answers · asked by ashersage 2 in Physics

2007-09-11 02:32:44 · 2 answers · asked by lexybaby 1 in Astronomy & Space

When two objects like the Moon and the Earth are in mutual orbit, surely it would require added energy to increase their distance apart against the force of gravity. Where is this added energy coming from?

2007-09-11 02:29:24 · 18 answers · asked by Anonymous in Astronomy & Space

2007-09-11 02:27:52 · 5 answers · asked by jeremy084 2 in Mathematics

I read that in another 30 or 40 years the North Polar bear is going to be extint, why cannot be transported to the Antartic?

2007-09-11 02:25:27 · 3 answers · asked by Carlos F 1 in Earth Sciences & Geology

Please help me out on this!

2007-09-11 02:23:47 · 4 answers · asked by Digital d 2 in Mathematics

it is a pp centrifugal chemical process pump

2007-09-11 02:20:56 · 4 answers · asked by swapnil j 1 in Engineering

2007-09-11 02:11:28 · 4 answers · asked by Lex 1 in Astronomy & Space

My bf woke up this morning scream for help from his grandpa. He had a dream his mom and him got attacked by a snake and his grandpa walked in with his pet bird, my bf started begging him to help. I had also heard that when you dream of snakes someone close to you is going to die or get seriously hurt (old wives tale). I told him this he called his mom and she said it meant the same about birds too. That birds are signs of death. Well he was freaking out. He left this morning to go to home dept and a bird hit is windshield and died. Then when he got to home dept a flock of birds flew around his truck. I dont know what to tell him. I told him he was just worked up. Not to worry about it.
The freaky thing is though his mom told him that his grandpa's sister was found dead last night in her apt, she had been dead for 3 weeks.

Should I lock him in a room? This is kinda freaking me out too.

2007-09-11 02:10:45 · 11 answers · asked by angel2005_2001 5 in Paranormal Phenomena

show that p <--> q and ((p /\ q) \/ (~p /\ ~q)) are equal.

2007-09-11 02:09:02 · 3 answers · asked by Digital d 2 in Mathematics

the displacement x m of a particle at time t seconds is given by x=(ke^(-3t))(2t^2+t), where k is a constant. if the initial velocity of the particle is 3m/s, determine the initial acceleration. find also the maximum displacement of the particle.

pls show the steps

2007-09-11 02:06:55 · 3 answers · asked by Anonymous in Mathematics

i want to learn physics how can i do that plz answer di que>>

2007-09-11 02:05:14 · 6 answers · asked by Anonymous in Physics

Question 1
F equals to e power xyzi bar plus two into xy cosyj bar plus bracket start xz plus twoy bracket k bar at the point one, one, one
Question 2 Let c be the curve x equals t, y equals t power two
Then integral subscript into bracket start two x plus y bracket close dx plus bracket start x power two minus y bracket close dy
Using line integral to solve this problem.

2007-09-11 02:02:27 · 1 answers · asked by Ibrahim S 1 in Mathematics

I was convinced that DNA could only be checked from samples of (significant) body tissues (or fluids), such as saliva, sweat, blood, sperm...

(And even these samples could only provide results if analyzed within a certain ammount of time...)

I can't believe that people are able to make serious accusations based on some 'alleged biological remains', which seem comparable to 'dust' or so...

2007-09-11 02:02:15 · 5 answers · asked by Anonymous in Biology

I am going to start school so that I can become a zookeeper soon. And I already volunteer at both my local humane society(in the wildlife section) and at my local zoo.

But in all the research that I have been looking though I have not seen anything that states on way or the other if it is good to specialize. I have no problem with that I just don't want something that will be MARKED against me, like I don't know enough about birds though I know a lot about apes. And I also know that I could not but all my eggs in on basket(so to say) but would it be better to have some extra eggs in one of my baskets.

Or because all zoos are different but are still reaching for the same goal at the heart of it would it be better to start off being general and then later if I would like to specialize try it by adding more schooling and trainings then?

2007-09-11 02:01:25 · 8 answers · asked by spyder 3 in Zoology

I can find information on the fuels and motors etc but nothing to tell me what that beautiful, white shell that surrounds it all was made of. Fancy alloy? Titanium? Steel? Aluminum? Does anybody know?
Thanks

2007-09-11 01:57:16 · 13 answers · asked by phaphamo 1 in Astronomy & Space

The whole family has seen a woman's apparition both moving and standing still in our apt. Cell phone camera can't catch her image. Any ideas on how to catch her image to document this phenomenon?

2007-09-11 01:46:43 · 5 answers · asked by medicine wheel 3 in Paranormal Phenomena

2007-09-11 01:45:18 · 15 answers · asked by Anonymous in Physics

2007-09-11 01:42:03 · 26 answers · asked by Anonymous in Astronomy & Space

storms and lighting are cause by disparate temperature conditions on land, and I'm sure there are 'storms' in the ocean also. Is any sort of electrical discharge created under water when warm and cold water masses interact?

2007-09-11 01:37:49 · 5 answers · asked by Fancy That 6 in Weather

the spark that is seen between a person's hair and a hard rubber comb used in the hair on a dry day?

2007-09-11 01:31:12 · 6 answers · asked by Chris 2 in Weather

2007-09-11 01:24:38 · 2 answers · asked by Matthew D 1 in Engineering

For the complete redox reactions given here, (i) break down each reaction into its half-reactions, (ii) identify the oxidizing agent, (iii) Identify the reducing agents

(a) 2Sr + 02 ------> 2SrO
(b) 2 Li + H2 ------> 2LiH
(c) 2Cs + Br2 -----> 2CsBr
(d) 3Mg + N2 ------> Mg3N2

2007-09-11 01:03:48 · 3 answers · asked by Anonymous in Chemistry

And what is it cause from?

2007-09-11 00:56:00 · 6 answers · asked by Anonymous in Medicine

2007-09-11 00:52:33 · 2 answers · asked by javv>>> 2 in Mathematics

Hi All,
This is aijaz .Can somebody help me to calculate the daimeter of a cone by giving only length. for example
http://www.gam-service.de/preview/scripts/kaliber/tuetencalc.htm
plz go through this and example to me how its works.

Thanks & Regards
Aijaz

2007-09-11 00:50:47 · 3 answers · asked by Anonymous in Engineering

when ordering concrete from a supplier they ask you what strength of concrete you require for example 20 mpa, 40 mpa and so on what does the mpa stand for?

2007-09-11 00:41:41 · 6 answers · asked by Anonymous in Engineering

2007-09-11 00:31:33 · 2 answers · asked by Graeme 1 in Botany

2007-09-11 00:28:00 · 5 answers · asked by Anonymous in Physics

2007-09-11 00:25:10 · 6 answers · asked by I 2 in Astronomy & Space