Science & Mathematics - 3 August 2007

If a,b,c are postive real numbers and abc=1 .

Show that 1+ 3/(a+b+c)≧6/(ab+bc+ca)

2007-08-03 20:33:31 · 1 answers · asked by pork 3 in Mathematics

So I like math and physics and chem all the things that have to do with engineering. but heres the thing I dont want to be in an office all day. I kinda want to be out in the field but I want to have the salary of an engineer and I want to go to school and get my B.A so what kind of engineering career do you guys recomend?

2007-08-03 20:23:31 · 4 answers · asked by Anonymous in Engineering

solve x and y
2^x+y=6^y

3^x-1=2^y+1

2007-08-03 20:20:57 · 3 answers · asked by shreyas 2 in Mathematics

They found a planet, Gliece 581 C within the star's habitable zone. The first they've ever found. However it's year is quite short with it's day just slightly longer. Do you think that it is true that there will be a "Dark" side of the planet, that is too cold for life to actually exist? Or maybe the side with the star will be too warm and only those on the "Twilight" side will be able to support life. Your thoughts?

2007-08-03 19:55:50 · 2 answers · asked by Richard S 2 in Astronomy & Space

If there is life it would be very very unlikely that life on another planet would be at the same evolutionary stage as us because it would not make mathematical sense, therefore, it would have to be significantly brighter or dumber. Before you jump down my throats, just think of the odds that life on another planet would be at the same evolutionary stage as us - I reckon it would be the number of planets with life x the number of species x the number of years the universe has been in existence, hence a very large number.

Therefore life on another planet would seriously have to be either brighter than us or dumber than us. So if it is dumber than us, why are we the most intelligent life form in the universe and therefore what made us different to all the other beings in the universe that we are the only one to use technology or at the very least the most advance beings at using technology?

2007-08-03 19:50:25 · 11 answers · asked by http://hogshead.pokerknave.com/ 6 in Astronomy & Space

2007-08-03 19:42:36 · 4 answers · asked by Anonymous in Biology

Can everyone explain why a magnet has such a property or characteristic? Can we use that property to generate unlimited energy since the magnetism is always there? Why?

2007-08-03 19:39:44 · 5 answers · asked by Anonymous in Other - Science

It was a tv show about aliens helping the egyptians and myans and how some of the flat pyramids were landing pads for them. I was wondering where to find more information about them.

2007-08-03 19:39:03 · 9 answers · asked by Anonymous in Astronomy & Space

Stuck on measurments for centermeters for 2 yards.Thank you so kindly:)

2007-08-03 19:32:36 · 11 answers · asked by nikky 1 in Mathematics

2007-08-03 19:28:37 · 3 answers · asked by warrier123456 1 in Medicine

Which of these would have a harder time JUST factoring in weather elements?

Take an Eskimo and put him somewhere hot and humid (say, the heart of Africa) or take a tribal African and put him in the Artic? Also, they will be taken to the other extreme climate in the dead of the season. Eskimo to Africa in July and the African to the Artic in January. The natives at the place they're being transplanted to WILL have proper clothing for them. Which one will have a harder time living? Will the Eskimo have more trouble with the scorching heat and the unbearable humidity? Or will the tribal African have more trouble in the bitter cold?

2007-08-03 19:28:23 · 8 answers · asked by Gs 2 in Weather

2007-08-03 19:27:43 · 4 answers · asked by warrier123456 1 in Medicine

2007-08-03 19:19:57 · 5 answers · asked by Anonymous in Astronomy & Space

If its true humans are direct decendants of apes earth had to have been called or termed, the Planet of the Apes to the point where we assumed the form we have now, then our planet got a new name....earth! Think about it!!!!

2007-08-03 19:14:35 · 13 answers · asked by ZORRO 3 in Astronomy & Space

It's been going on for a couple hours, I stepped out to take a look, it scares me, I have got goosebumps nonstop all night. Any idea what is causing the lightning to stick around?

2007-08-03 19:11:56 · 2 answers · asked by Anonymous in Weather

what was the system called when early astronomers had the earth in the center ?

2007-08-03 19:06:54 · 5 answers · asked by Anonymous in Astronomy & Space

1 A man walks 1.41km directly northeast. What is the component of his displacement in a north direction?
4. Boat is crossing a river. The boat's water carries the boat downstream at a rate such that the resultant velocity of the boat is 6.5m/s. What is the velocity of the water in the river?
5.A man is plowing snow from his driveway. He pushed down teh handle of the plow with a force of 48N with the handle forming an angle of 60 degrees with the horizontal driveway. What is the useful (horizontal) component of the force he exerts down the handle?

4. An aircraft is traveling southwest with a speed of 1410km/h. What is the west compoonent of this velocity?
6. Two dogs are pulling on the same bone. A podle is pulling toward the south with a force of 7N. A spaniel is pulling toward teh east with a force of 24N. With what force and in what directioon must a collie pull on the same bone, if the bone is to have a net force of zero on it? (degrees relative t north)

2007-08-03 19:06:13 · 2 answers · asked by Anonymous in Physics

2007-08-03 19:02:54 · 2 answers · asked by bboy244 3 in Engineering

ASSUME THE TWO PLAYERS WERE INITIALLY RUNNING DIRECTLY AT ONE ANOTHER. NEGLECTING THE LEGALITY OF THE PLAY AND THE EFFECTS DUE TO DIGGING IN OF CLEATS:
a) NEITHER PLAYER WILL DRIVE THE OTHER BACKWARD.
b) THIS IS A SIMPL EXAMPLE OF AN ELASTIC COLLISION
c) THE LINEBACKER WILL DRIVE THE HALFBACK BACKWARD.

2007-08-03 18:54:29 · 2 answers · asked by Josh Muller 1 in Physics

2007-08-03 18:50:12 · 1 answers · asked by duckie_466 1 in Mathematics

2007-08-03 18:49:05 · 5 answers · asked by -)-(- 6 in Parapsychology

You always hear about the first man, but who was the last?

2007-08-03 18:44:34 · 3 answers · asked by Jennifer P 2 in Astronomy & Space

I'm currently a graduate student in philosophy, and have maintained a non-physicist's interest in questions concerning the "nature" of spacetime.

My question is:
Using the analogue of a three-dimensional spacetime, would is be possible, from a conceptual and physical standpoint, to represent objects on a two-dimensional spatial manifold, and represent time as a third spatial dimension, albeit one not spatially accessible to entities living on a two-dimensional manifold? What I am driving at is whether it is possible to reduce the physical concept of time to description in terms of higher-dimensional spatial coordinates; in our case, time would thus be defined as a fourth spatial dimension. In the example above, it would represent a third spatial dimension for two-dimensional entities.
Is there anything in extant physical theory to support or rule out this possibility? thanks!

2007-08-03 18:38:18 · 9 answers · asked by logos 1 in Physics

I guess my intitial question would be how many people on Yahoo! Answers are aware of it, what are your thoughts, and if you think it's a "doomsday machine" you are retardly wrong.

if you have no idea what I'm talking about, I highly suggest that you "wiki" it... do a search for "LHC" or "CERN " or "Hadron Particle Collider" and you will be amazed...

2007-08-03 18:30:55 · 4 answers · asked by superrix83 4 in Other - Science

2007-08-03 18:26:54 · 8 answers · asked by brewer37 1 in Mathematics

srry i keep asking these but do you think it will?

2007-08-03 18:18:06 · 12 answers · asked by Anonymous in Weather

2007-08-03 18:15:32 · 4 answers · asked by Anonymous in Astronomy & Space

If you shallow it, wouldn't it suppose to digest as food?

2007-08-03 18:14:01 · 4 answers · asked by Vpyingyang 2 in Medicine

can't use the calculator.If possible,show me the steps.I'm really not good in trig function.

2007-08-03 17:39:35 · 4 answers · asked by anna evasive 2 in Mathematics

I have always wonderd....

2007-08-03 17:36:24 · 9 answers · asked by Anonymous in Astronomy & Space