Science & Mathematics - 17 November 2007

Someone I know claims to be able to predict the outcome of a coin toss thought not perfectly.. I know they basically have a 50% chance of guessing it right the first time...but how many times would they need to guess it right for it somewhat confirm that they can somehow predict the outcome. Like for example, would they need to guess it right 90% of the time or something like that. And what would be the odds of them guessing say 70% right? I would kind of like to be able to setup some sort of a bell curve to know what values would be out of the normal range for deviation? Thanks

2007-11-17 06:32:50 · 3 answers · asked by Anonymous in Mathematics

2007-11-17 06:32:24 · 2 answers · asked by cptbass 1 in Zoology

What minerals are in limestone?

2007-11-17 06:26:14 · 3 answers · asked by MikiD 2 in Earth Sciences & Geology

2007-11-17 06:19:19 · 16 answers · asked by GSH 5 in Medicine

Please answer.!!!

2007-11-17 06:18:18 · 3 answers · asked by Zach B 1 in Botany

Like in that Superman film?

2007-11-17 06:17:55 · 40 answers · asked by The Doctor 4 in Physics

There is a 2 kg block being pushed up a vertical wall at a constant velocity for a dist of 3 m and the coeff. of friction is .30. A constant force is applied at an angle of 28 deg with the horizontal. Find the magnitude of normal force btw the block and the wall.
Now I found the horizontal component to be 17.32 but I can't find the vertical component. I've done everything possible but can't solve this.

2007-11-17 06:11:08 · 5 answers · asked by Crashovdr 4 in Physics

2007-11-17 06:09:05 · 4 answers · asked by vet4927 1 in Mathematics

I'm using Secret. The ingredients are:
Aluminum Zirconium, Tichlorohydrx GLY
Dimethicone
Tribehenin
C18-36 Acid Triglyceride
Pentadecadecalactone

2007-11-17 06:06:37 · 1 answers · asked by beingagood1 5 in Chemistry

2007-11-17 06:06:17 · 5 answers · asked by michael s 1 in Mathematics

2007-11-17 06:05:58 · 1 answers · asked by Macgyver with Crosby 4 in Earth Sciences & Geology

I am trying to find out what this solid is. It looks like a really small rock. Two of them were stuck together and when I took them apart it looked like metal was stretching. I found the density was 3.21g/ml3. Its not magnetic, and has a melting point after 650 degrees C. I can't figure out what it is.

2007-11-17 06:03:18 · 1 answers · asked by Anonymous in Chemistry

if i was in charge, it would be in the 90s or 100s during the summer and 60s in the winter. and the coldest days would be at least 45. rain doesnt matter much, as long as we get a good amount but not daily

what would it be like if you were in charge?

2007-11-17 06:02:44 · 17 answers · asked by Anonymous in Weather

Is the title on my tri-fold board supposed to be my question, my hypothesis, or do i think of a unique title?

2007-11-17 06:01:46 · 6 answers · asked by Lanie 1 in Earth Sciences & Geology

Given two amsses, 3m and 4m, where the 3m mass is moving with a velocity v1 colliding with the 4m mass, which is suspended by a string of length L. The two masses are stuck together as the result of the collision. The compound system swings to the right and stops at the horizontal level. Find the kinetic energy K of the compound (theoretically).

2007-11-17 06:01:24 · 2 answers · asked by Anonymous in Physics

C-14 has a half life of 5730 years. Charcoal with a 1/4 of the amount of C-14 as a living tree would have burned how long ago?

2007-11-17 06:00:31 · 5 answers · asked by Macgyver with Crosby 4 in Chemistry

A certain colony of bacteria grows at a rate proportional to the number of bacteria present. Suppose the number of bacteria doubles every 12 hours. How long (in hours) will it take this colony to grow to five times its original size?

Time needed = _________ hours

PS
the answer is NOT 27
and is NOT 30 :]

2007-11-17 05:59:59 · 4 answers · asked by ohsnapps 2 in Mathematics

jupiter and rahu are in 1 house of tauras. saturn .mars and moon are in 2nd ,3rd and 11th house. other all are in 4th house

2007-11-17 05:57:57 · 3 answers · asked by manoj j 1 in Astronomy & Space

2007-11-17 05:57:21 · 6 answers · asked by philip g 1 in Astronomy & Space

(x-2)^2=3

2007-11-17 05:55:28 · 8 answers · asked by Katherine G 1 in Mathematics

Tell me!

2007-11-17 05:54:50 · 9 answers · asked by Queen Fan 2 in Astronomy & Space

As far as i understand (no very much) a human cell contains 23 pairs of chromosones. But i am also told during fertilisation we have 23 'non-paired' chromosones in each gamete which eventually mix. That doesn't make 23 pairs though- it makes 46 seperate chromosones,

I'm CONFUSED.
Any help would be greatly appreciated. Thanks!!!

2007-11-17 05:53:34 · 4 answers · asked by Anonymous in Biology

I left my medication ( Nystatin Oral Suspension) to be precise over a lamp and it was sort of warm when I was about to take it. It says keep in a cool place so I am geussing its probably denatured and useless but would it be wrong to still take it just incase?

gonna go to pharmacist tommorow and ask but in the mean time I thought I ask here!

2007-11-17 05:53:32 · 2 answers · asked by 421 4 1 in Medicine

2007-11-17 05:52:17 · 3 answers · asked by TwiStEd 1 in Weather

2007-11-17 05:50:47 · 7 answers · asked by azeemraz 1 in Mathematics

i got a couple of questions but i dont wanna waste points so


1.Has anyone seen an alien ufo,where and how

2.if you have seen them how do they look like

3.do you believe in ufos why or why not

4.do you believe in aliens why or why not

5.do you believe ufos with ALIENS have visited earth wy or why not

2007-11-17 05:48:41 · 5 answers · asked by Panama 3 in Astronomy & Space

the future of biotechnology is not just with plants but fish splised tomato is highly likely. it would be just like a tomato but it has the good proteins of a fish in it. no physical change only chemical. but I'm more into the Human interact with and control technology with their mind part for biotech(if im thinking of the wrong thing plz correct me this will be my job in the future) i think that human controlling tech with their minds and having more advanced prosthetics we would be in a would of i show i watch.(Ghost in a Shell) which is a world in the future where most humans change from a fregal human body to a sturdy prosthetic body controlled by the only bio part needed for them (the brain) which hints the term Ghost in a Shell but there r plenty of good things about this field but there just this one thing that will happen in the future if we ever find out how to contain the brain in a shell and keep it alive and working with technology

2007-11-17 05:45:26 · 2 answers · asked by TT.TT 1 in Biology

I doing a school report and I cant find anything about their self-defense. Please HELP ME !!!!!

2007-11-17 05:43:25 · 1 answers · asked by Zach B 1 in Botany

So last year i was told that we draw an atom with the nutrons and protons in the middle, then we put rings around and electrons would be represented as 'X', drawing 2 (North, South) on the first ring.

4 (North, South, East, West) on the second ring.

8 on the next ring (North, South, East, West, North, South, East, West), meaning we would have 2 paired up at each point, the next would have maximum of 3, ect.

This year we are told that we should draw the "X", East, West, North South, does it really matter, and is there a correct way of drawing an atom in that matter, and whats its name, as it isnt the same as a Bohr Atom.

Thank-you

2007-11-17 05:40:00 · 4 answers · asked by Paul W 1 in Chemistry

2007-11-17 05:39:25 · 16 answers · asked by A Ceratin Person 2 in Geography