Science & Mathematics - 23 October 2006

most commercial aircraft have a wing pitch angle of 4degrees, if in flight the angle goes below 4degrees will the plane descend??

2006-10-23 04:33:05 · 2 answers · asked by mini_elliso 1 in Engineering

The question wheter to jump or not has been asked several times, it's clear that jumping won't help.

But many people suggested that the best way to survive in a falling elevator is to lie down flat on the ground. (to spread the force on a large surface).

I don't think that is reasonable!

I mean our legs and spine are made to protect the brain from shock. If we laid flat on the ground there would be no springing. you would hit the floor right with your head...
Have you ever jumped down a tree outstreched flat to spread the force? That's redicolous...

Some people here are giving advices that are far from reality...
What do you think?

2006-10-23 04:30:10 · 6 answers · asked by DrAnubis 4 in Physics

Has there been any scientific research about what lies 1000's of miles above and below the earth not just out.

2006-10-23 04:26:20 · 20 answers · asked by tmeusborn 1 in Astronomy & Space

Intestinal gas is methane and methane gas is lighter than air. With these 2 truths in place, how many/much beans would a normal, 150 pound person have to eat to show measurable weight loss after passing gas?

2006-10-23 04:26:13 · 8 answers · asked by Stephen C 3 in Chemistry

2006-10-23 04:25:18 · 15 answers · asked by Anonymous in Zoology

2006-10-23 04:25:11 · 1 answers · asked by Jose V 1 in Mathematics

2006-10-23 04:22:17 · 15 answers · asked by iteachmygirl 1 in Biology

'Scientist have calculated the year when the human race will cease to exist. It will be October 31, otherwise know as Halloween, but there is no need to worry yet as the year is 2,252,006. The date was announced by a team of European geologists after fossils from central Spain were analysed, they confirms supspicions that mammal species have an avereage lifespan of 2.5 million years and modern man has already been around for 250,00 years. ' - i read this from the bbc website, how do they know the write date, is it true?

2006-10-23 04:22:08 · 24 answers · asked by me 4 in Other - Science

2006-10-23 04:11:37 · 13 answers · asked by ? 2 in Mathematics

Also- How big are the average satellites we see from earth? Do they have lights, logos, or what? How long do they usually stay in orbit?

2006-10-23 04:08:16 · 2 answers · asked by Mery J 1 in Astronomy & Space

could i survive by jumping up as high as i could just before the elevator hit the ground

2006-10-23 04:04:54 · 28 answers · asked by Stephen C 1 in Physics

2006-10-23 04:03:43 · 10 answers · asked by wildbutterflychick 2 in Physics

CONDITIONS OF THE UNIVERSE HAS CHANGE D OVER YEARS AND VELOCITY OF LIGHT STILL REMAINS 3*10^8M/S .ISN'T IT ABSURD?

2006-10-23 03:58:53 · 3 answers · asked by Anonymous in Physics

2006-10-23 03:54:30 · 5 answers · asked by Anonymous in Engineering

2006-10-23 03:48:45 · 16 answers · asked by alan n 1 in Earth Sciences & Geology

we are builting a dam for domestic purposes on the highlands (of 2400m asl) to supply it to lowland (0m asl). the horizontal distance would be 60km at most. for this purpose we are going to use a 250mm diameter pipes, from the dam to the lowland city.

It is just came to mind if the gravity difference could be of any use, as we will have high potential energy. Is there any technology that can change this potential engery (hydroulic) of the piped water into some other form like electical energy that would be used for other small purposes. give me if you have any clue, it is really not a hypothetical quiestion.

thanks
Filmon

2006-10-23 03:43:56 · 4 answers · asked by filla 1 in Engineering

2006-10-23 03:43:40 · 8 answers · asked by ben s 1 in Mathematics

we are builting a dam for domestic purposes on the highlands (of 2400m asl) to supply it to lowland (0m asl). the horizontal distance would be 60km at most. for this purpose we are going to use a 250mm diameter pipes, from the dam to the lowland city.

It is just came to mind if the gravity difference could be of any use, as we will have high potential energy. Is there any technology that can change this potential engery (hydroulic) of the piped water into some other form like electical energy that would be used for other small purposes. give me if you have any clue, it is really not a hypothetical quiestion.

thanks
Filmon

2006-10-23 03:43:38 · 5 answers · asked by filla 1 in Engineering

Im looking for Science Fair ideas, and I heard that you can find the date of when a painting is created to know if its fraud or not.

2006-10-23 03:42:54 · 4 answers · asked by Clemence 2 in Chemistry

2006-10-23 03:37:39 · 3 answers · asked by Anonymous in Chemistry

this happens to me atleast 1-2 a month.My fiance also has that once in a while. I heard it was something about your spirit leaving your body before u fall alseep.Or its like a fase 2 of falling alseep.And somebody else said its something about a spirit being around you.I am not sure, but i am very curiouse.My fience gets creeped out everytime this happens to him.

2006-10-23 03:32:49 · 12 answers · asked by askalotofquestionsmom 1 in Other - Science

My niece has got a math problem. It looks simple but I no math wiz. Need help.

Harry paid $7.80 for 3kg of sugar and 6kg of flour. If 1kg of sugar and 1kg of flour cost $1.50 find the cost of 1kg.

2006-10-23 03:28:59 · 14 answers · asked by Phebe 2 in Mathematics

Who invened the first camera and when? When the camera was invented did it have a big impact on the people of that time? Did it affect any other inventions?

2006-10-23 03:25:58 · 9 answers · asked by cat_lover 3 in Other - Science

2006-10-23 03:25:06 · 6 answers · asked by Anonymous in Biology

ma kid brother challenged me 2 this hypothetical question.

2006-10-23 03:21:26 · 16 answers · asked by Another face in the crowd 3 in Physics

Why don't planes have to travel at 1,000s of kilometres an hour to even keep up with there global coordinates?

2006-10-23 03:13:23 · 8 answers · asked by geode_diamond_soul 1 in Mathematics

2006-10-23 03:12:29 · 5 answers · asked by dlm1811 1 in Other - Science

during digestion

2006-10-23 03:10:14 · 5 answers · asked by maha 2 in Zoology

Why would God make ugly goblins out of us. Does this prove that there is no God and even if he does exist, he has nothing to with us

http://news.bbc.co.uk/1/hi/uk/6057734.stm

2006-10-23 03:07:38 · 22 answers · asked by Anonymous in Biology

I know how to do some simple charges like

NH4+ & NO3- = NH4 NO3 (charges cancel because you have on positive and one negative)

Would copper phosphate be Cu3(PO4)2?

i'm not even sure if i wrote the name for that write..is it supposed to be copper(II)phosphate?

2006-10-23 03:07:29 · 4 answers · asked by Julio 4 in Chemistry