Science & Mathematics - 10 December 2007

2007-12-10 18:56:21 · 3 answers · asked by johnny b 2 in Mathematics

i am watching it on the A/E channel. and if this stuff is real then thats nuts. it cliams to have ghosts opening doors and footsteps. seems kind of fake to me. what do you guys think?

2007-12-10 18:45:21 · 8 answers · asked by Anonymous in Paranormal Phenomena

2007-12-10 18:32:35 · 1 answers · asked by Amir A 1 in Physics

in the second episode, they were tlaking about the name of a demon you shouldnt say or try to figure out because to do so means you want to confront it. the main guy in the show said, it was the church or the vatican who told him about it. what do you guys think? does the church have ghostbusters in real life?

2007-12-10 18:24:06 · 4 answers · asked by Anonymous in Paranormal Phenomena

The ratio of boys to girls is 6:4.60% of the boys and 40% of girls take lunch in the canteen.What % of class takes lunch?

2007-12-10 18:18:40 · 3 answers · asked by nike 1 in Mathematics

consider the following sample of three scores: 2, 4, and 6. the best estimate of the population standard deviation would be.. what? im so confused. please help me!

thank youu!

2007-12-10 18:14:05 · 3 answers · asked by arienette 2 in Mathematics

We have a system of caves near by where some scientists say that there might be up to 200 species of bats wintering there. Does this sound possible?

2007-12-10 18:04:43 · 3 answers · asked by Praire Crone 7 in Zoology

1. Let's say that in seals, the gene for the length of the whiskers has two alleles. The dominant allele (W) codes for long whiskers & the recessive allele (w) codes for short whiskers. What percentage of offspring would be expected to have short whiskers from the cross of two long-whiskered seals, one that is homozygous dominant and one that is heterozygous? Explain your answer and use a punnett square.

2. You are experimenting with flies in which red eyes (R) are dominant over white eyes (r). If the mother has white eyes, and the father is heterozygous. What are the expected results for genotype and phenotype?

2007-12-10 18:02:29 · 1 answers · asked by foxtrot 1 in Biology

2007-12-10 18:01:22 · 1 answers · asked by chewbacca87 1 in Chemistry

2007-12-10 17:59:09 · 2 answers · asked by Anonymous in Physics

A bus traveled 10.0 km from the north end of the city to the south in 10.0 minutes. The average speed of the bus was 16.7 m/s
is that right?

2007-12-10 17:54:28 · 5 answers · asked by Anonymous in Mathematics

If they can collide, what's the resulting effect?

2007-12-10 17:54:20 · 5 answers · asked by alexpheno 1 in Physics

Please give me step by stepon how to solve these two problems, thank yooouuu!! >_<

-Write the equation in standard form with integer coefficients:

1) x+3y-4=0

2)2x-3y-14=0

2007-12-10 17:54:00 · 3 answers · asked by Victoria L 1 in Mathematics

2007-12-10 17:53:17 · 12 answers · asked by alexpheno 1 in Astronomy & Space

I am currently looking at the Celestron 114 SLT. I have no prior experience with telescopes and saw this and thought it would be great to start off. Can somebody tell me about this scope. Can you see the rings of Saturn fairly good? I know that aperture is what counts but I just have no clue on this.

http://www.telescopes.com/telescopes/go-to-telescopes/celestronnexstar114slttelescope.cfm

I am trying to also start astrophotography and telescopes.com says its good for that. Any help is appreciated. Thanks!

2007-12-10 17:53:05 · 7 answers · asked by John 1 in Astronomy & Space

2007-12-10 17:52:17 · 5 answers · asked by kcnevets 1 in Mathematics

2007-12-10 17:48:10 · 3 answers · asked by SICK MY DUCK! 1 in Chemistry

well i must find the unit vector of point A to a point equidistant from B&C on the line BC. i'm really in trouble.

2007-12-10 17:46:21 · 2 answers · asked by gizmo 2 in Mathematics

Would it be better and more efficient to charge a 12v battery with a generator that produces 350v and 15 amps at 2,000RPM or a generator that produces 50v and 50amps at 2,000RPM? In general which is better for charging, amps or volts?

2007-12-10 17:44:48 · 3 answers · asked by Cassidy A 1 in Engineering

2007-12-10 17:43:47 · 1 answers · asked by Anonymous in Chemistry

The obvious answer is, of course, that these planets with intelligent life could be so far away that even at the speed of light it would take thousands or tens of thousands or even hundreds of thousands of years for them to reach us.

But consider that many experts think there could be at least tens of billions of planets out there - or perhaps many, many times that.

That would mean that there is a strong likelihood that there is intelligent life out there, and that there are civilizations that precede us by perhaps millions of years.

By now, some civilizations surely would have developed the technologies to contact other worlds, travel to other worlds, or send out transmissions to other worlds.

But humanity has yet to make any contact with anyone out there?

Why is this?

Given the numbers, wouldn't it be a good guess that we should have heard from someone by now?

Is there really life out there?

2007-12-10 17:35:45 · 11 answers · asked by Zezo Zeze Zadfrack 1 in Astronomy & Space

If the natural length of helical spring is 10 inches and if it takes a force of 3 pounds to keep it extended 2 inches, find the work done in streching the spring from its natural length of 15 inches

2007-12-10 17:27:49 · 1 answers · asked by msmall13 1 in Mathematics

and animals have in their bodies etc. etc. and rain and evaporation and stuff, would there be today the same amount of overall water as there was when the earth formed or the same amount today as there was last week. Is there any wastage - Is it running out???

2007-12-10 17:10:41 · 5 answers · asked by veraswanee 5 in Earth Sciences & Geology

2007-12-10 17:07:31 · 9 answers · asked by theypissonourbacksandsayitsrain 1 in Astronomy & Space

okay, so I got this review worksheet in math today for a quiz tomorrow, and I still don't get it! I asked for help and got some of it but most I don't get. I need help with this equation please:

-4x-9=5x+99

I know you have to like subtract something from either side...

thank you!

2007-12-10 17:07:10 · 6 answers · asked by arielbrite 1 in Mathematics

2007-12-10 17:07:08 · 2 answers · asked by Francisco C 2 in Mathematics

3, 7, 11, 15...

The question: The first 4 terms in a sequence are shown above. Each term after the first is found by adding "x" and to the term immediately preceding it. Which term in the sequence shown above is equal to 147?

The answer: 37

The formula: 3+4 (n-1)= 147

In the formula, I don't understand where and what "n" is and equals.

2007-12-10 17:06:43 · 3 answers · asked by . 2 in Mathematics

2007-12-10 17:01:57 · 5 answers · asked by i need help fast 1 in Biology

I was about to post this elsewhere but the system brought up astronomy so here we go!!

♥MG♥

2007-12-10 17:00:30 · 10 answers · asked by Anonymous in Astronomy & Space

Why do you think there have been a near record number of more powerful ones? They're usually rare and weak.

2007-12-10 16:59:59 · 5 answers · asked by Anonymous in Weather