Science & Mathematics - 31 July 2006

2y/y+4 -2y/y-4 = y^2+16/y^2-16

2y(y-4) – 2y(y+4) = y^2+16/(y+4)(y-4)

2y^2-8y-2y^2-8y = y^2+16

-16y = y^2+16

0 = y^2+16 + 16

2006-07-31 07:33:58 · 27 answers · asked by sabrina s 2 in Mathematics

2006-07-31 07:32:54 · 22 answers · asked by tunachunks199 1 in Earth Sciences & Geology

Electrical power and its tranmisson

2006-07-31 07:32:43 · 2 answers · asked by goring 6 in Engineering

what is the reason and how does an atom realese energy.

where does that energy come from?

2006-07-31 07:30:25 · 2 answers · asked by muzhda_ahmedali 1 in Chemistry

But if the same carriage going at the same speed had no ceiling or roof and you jumped, you would land behind the spot you jumped from?

2006-07-31 07:28:33 · 16 answers · asked by fletcheyc 2 in Physics

i know that when looking out into deep space a telescope is looking into the past, if there was a telescope powerful enough would scientisits be able to see the moments directly after the big bang, before stars and galaxies formed properly?

2006-07-31 07:28:01 · 14 answers · asked by LOLLY 1 in Physics

2006-07-31 07:24:46 · 9 answers · asked by Patrick H 5 in Geography

2006-07-31 07:24:40 · 18 answers · asked by fletcheyc 2 in Astronomy & Space

2006-07-31 07:24:39 · 17 answers · asked by Anonymous in Earth Sciences & Geology

Moving air thrown by electric or hand fam seems cooler, even though there is no change in temperature.

2006-07-31 07:22:56 · 11 answers · asked by Anonymous in Weather

2006-07-31 07:22:54 · 14 answers · asked by krash 2 in Physics

.There is a five-digit no. following conditions were given about the same number.
-> There are two prime nos in that number.
-> No duplicates are there.
-> Digit 3 is the highest.
-> Digit 2 is the lowest.
-> Digit 5 is between digit 2 and digit 1 and is half of digit 4.
-> Digit 1 is one less than digit 3 and is greater than sum of digit 4 and digit 5.
Find the number.(Don't take 1 as prime no.) It was given there in the paper.

2006-07-31 07:22:20 · 6 answers · asked by navin s 1 in Mathematics

2006-07-31 07:21:51 · 18 answers · asked by fletcheyc 2 in Zoology

2006-07-31 07:20:08 · 4 answers · asked by Anonymous in Biology

Basically my question is asking if you lose mass as you lose weight. I beleive it is true. My 8th grade science teacher told us that if he weighed 200 lbs and lost 10 lbs he would have the same mass. Which i beleive is false. He refused to beleive he was wrong. I would just like to see what every one else thinks...please anwser this!!!!!

2006-07-31 07:19:38 · 10 answers · asked by Jane G 1 in Physics

2006-07-31 07:19:19 · 20 answers · asked by emma c 2 in Geography

. There is a five digit number. It has two prime digits (1 is not a prime number). Third digit is the highest. Second digit is the lowest. First digit is one less than the third digit. The fifth digit is half of the fourth. The sum of 4th and 5th is less than the first. Find the number.

2006-07-31 07:17:19 · 10 answers · asked by navin s 1 in Mathematics

2006-07-31 07:14:13 · 5 answers · asked by Brandon ツ 3 in Mathematics

.There are two towers A and B. Their heights are 200ft and 150ft respectively and the foot of the towers are 250ft apart. Two birds on top of each tower fly down with the same speed and meet at the same instant on the ground to pick a grain. What is the distance
between the foot of tower A and the grain?

2006-07-31 07:13:45 · 12 answers · asked by navin s 1 in Mathematics

2006-07-31 07:13:04 · 3 answers · asked by sandhu 2 in Mathematics

well if u say the energy thing ,then why does it bend in a gravitational field. if it responds to a gravitational field then it too must have a field of its own and can attract things. i know it doesnt. but how come its not the other way round. can anybody tell me where the flaw is?

2006-07-31 07:11:20 · 50 answers · asked by outofthisworld 2 in Physics

I hear it all the time. 'I am from New York' and I ask where and they act like I am stupid and they say 'The City'. Well, guess what, New York City makes up only .5% of the State. Why are people so ignorant to this fact?

2006-07-31 07:10:07 · 6 answers · asked by skifaster66 2 in Geography

2006-07-31 07:08:59 · 4 answers · asked by Ahsan Shahid 1 in Physics

where people discuss the inventions and projects they are working on.

more things that people want to share and get help on their ideas rather than ones that are secret because they want to make a fortune on them.

thanks

2006-07-31 07:08:23 · 1 answers · asked by brainiac 4 in Engineering

I haven't, but books and tv shows on UFOs and aliens have always interested me. And I think that at least some of these cases are real.

Didn't really know what category to put this in. Hope it fits.

2006-07-31 07:07:46 · 6 answers · asked by D.A. S 1 in Astronomy & Space

It is alleged that Global warming would make sea level to rise. The warmer will be the globe the more would be rate of evaporation and air's capacity to hold vapor as cloud. Would not that help to lower the level of water, or at least, keep the level constant ?

2006-07-31 07:06:47 · 8 answers · asked by Anonymous in Weather

All information about this subject

2006-07-31 07:04:12 · 4 answers · asked by Anonymous in Engineering

2006-07-31 07:01:50 · 6 answers · asked by Anonymous in Astronomy & Space

A Grundo, a Gnorbu, a Gelert, and a Grarrl need to walk from Sakhmet to Qasala during a really bad heat wave. The heat is so bad, it's not possible to cross the open desert without some sort of shade. Fortunately, they have one umbrella. Unfortunately, however, only a maximum of two pets at a time can fit under the umbrella. The Grundo can cross the desert alone in 20 minutes. The Gnorbu can make the crossing alone in 16 minutes. The Grarrl can make the crossing alone in 8 minutes. And the Gelert can make the crossing in 4 minutes. Note that when two pets are making the crossing, they must do so at the pace of the slower pet!

What is the minimum number of minutes that it will take for all of the pets to safely be together in Qasala?

2006-07-31 06:56:21 · 11 answers · asked by sweetpeaches_6915 2 in Mathematics

I love those things..espically for the 4th of july.

2006-07-31 06:52:14 · 4 answers · asked by michaelbaseballnyy 2 in Chemistry