Science & Mathematics - 8 November 2006

2006-11-08 03:30:45 · 3 answers · asked by sen 1 in Chemistry

Given at least one child in a family of 5 has blue eyes, and the probability any child has blue eyes = 1/4, what is the probability at least 2 children have blue eyes? (i don't see why they tell you at least one child has blue eyes if each event is independent anyway).

2006-11-08 03:29:56 · 2 answers · asked by kate 1 in Mathematics

Where would be the centre of gravity in that hole. A stone thrown from the north pole , in that hole will go where . Will it come out from the south pole and vanish in the space.

2006-11-08 03:28:45 · 10 answers · asked by kam0361 1 in Astronomy & Space

"A polling agency states that candidate Y currently has 40% of the vote in the upconing election. The agency used a random sample of 500 people in the US generated by computer. What is the 95% confidence interval for this popular vote percentage reported?"

I'm looking at Statistics for dummies...it tells me that to find the margin of error, take the sample size n and find 1 divided by the square root of n. So...1 divided by 22.36 = 0.04--4% margin of error. From there, I want to find the mean, but how do I do this? I have 5 or 6 books I'm looking at, but can't see an exact pattern in any of them.

2006-11-08 03:28:02 · 1 answers · asked by SphinxEyez999 2 in Mathematics

2006-11-08 03:26:05 · 6 answers · asked by Anderlagiht 2 in Engineering

Where would be the centre of gravity in that hole. A stone thrown from the north pole , in that hole will go where . Will it come out from the south pole and vanish in the space.

2006-11-08 03:25:53 · 14 answers · asked by kam0361 1 in Astronomy & Space

2006-11-08 03:24:38 · 8 answers · asked by goring 6 in Physics

please help!

2006-11-08 03:24:20 · 2 answers · asked by mercben 1 in Mathematics

The Human Fertilisation and Embryology Authority are considering granting permission to UK scientists to fuse human DNA with cow eggs.

The stem cells from the embryos would be used for research into treating Parkinson's and Alzheimer's Diseases, and strokes.

Should UK scientists be allowed to create human-bovine embryos for stem cell research?

2006-11-08 03:22:11 · 10 answers · asked by Anonymous in Biology

What could happen to a rocket that would cause it to go higher than expected?

2006-11-08 03:21:47 · 4 answers · asked by this Mike guy 5 in Engineering

what could happen to a rocket that would cause it to go higher then expected?

2006-11-08 03:20:37 · 3 answers · asked by this Mike guy 5 in Physics

please help!

2006-11-08 03:18:51 · 4 answers · asked by mercben 1 in Mathematics

Describe at least 6 chemical changes that you experiance in a typical day.

2006-11-08 03:18:38 · 2 answers · asked by artistmartista 1 in Chemistry

The recessive mutations b (black body color), st (scarlet eye color), and hk (hooked bristles) identify three autosomal genes in D. melanogaster. The following progeny were obtained from a testcross of females heterozygous for all three genes.


black, scarlet 243
black 241
black, hooked 15
black, hooked, scarlet 10
hooked 235
hooked, scarlet 226
scarlet 12
wild-type 18

What conclusions are possible concerning the linkage relationship of these three genes? What was the genotype of the female heterozygote? Calculate any appropriate map distances.

2006-11-08 03:17:07 · 1 answers · asked by Ashi 2 in Biology

how many million. how many zero's before the decimal. ty

2006-11-08 03:16:04 · 10 answers · asked by nora7142@verizon.net 6 in Mathematics

which has good looking places

2006-11-08 03:15:33 · 17 answers · asked by Anonymous in Geography

2006-11-08 03:15:08 · 3 answers · asked by Mark G 1 in Chemistry

Every time I go there i get surrounded and attacked. Others I know go every day and are ignored

2006-11-08 03:12:18 · 4 answers · asked by Jason O 3 in Zoology

I don't know if I am asking this question correctly... So let me try to explain...

You are looking at a screen with a radar sweep. Usually, everything is lightened up as the sweep goes around (or the signal is going out). When something comes into the radar's view, it bleeps and lights up brighter showing that the signal gone out is being reflected/refracted/scattered/etc.

Now, what is is called when the the sweep goes around, but a portion of the signal coming off the antenna disappears into nothingness as if it has been absorbed... the signal lost and gone? (think like absorbed as in a black hole)

It would almost look like a dark spot on the radar screen... What is that "empty" area called...

I want to say it is called a "dead" something... like "dead air" or "dead space" or a "dead spot" in the radar... or "black area" or something...

Do any of you know what I mean? If so, do you know the correct technical terms?

Thanks...
T.

2006-11-08 03:11:54 · 4 answers · asked by Theophania 4 in Other - Science

2006-11-08 03:11:44 · 11 answers · asked by Anonymous in Weather

12=10-x
1-9=y+2
The sum of twice a number and 4 equals 6 Do I say 2x+4=6 then 2x=6-4 and 2x=2 so x=1

2006-11-08 03:09:48 · 9 answers · asked by Anonymous in Mathematics

2006-11-08 03:09:29 · 1 answers · asked by snoylmel 1 in Zoology

I have Plantar fasciitis and my doctor has told me I may need these shots to take the pain away. I am worried as when I read up on it I learned that the shots are painful.
If you have had them for the same complaint can you let me know how you were afterwards please. Many thanks in advance.

2006-11-08 03:07:48 · 3 answers · asked by sue l 4 in Medicine

its for an exam on friday for environmental planniang

2006-11-08 03:07:47 · 1 answers · asked by gwynethclaasen 1 in Engineering

A ball is attached to a horizontal cord of length L whose other end is fixed. (a) If the ball is released what will be its speed at hte lowest point of its path? (b) A peg is located a distance h directly below the point of attachment of the cord. If h=0.8.L, what will be the speed of the ball when it reaches the top of its circular path about the peg?

Answer: (a) sq.rt. 2gL (b) sq.rt.1.2gL

2006-11-08 03:07:32 · 4 answers · asked by lp177026 1 in Physics

recent observations declared that pluto is not a planet. at that time (recently)some bodies were declared as planets. name them

2006-11-08 03:06:09 · 5 answers · asked by kuttu 2 in Earth Sciences & Geology

2006-11-08 03:05:58 · 14 answers · asked by djmonsta200883 2 in Botany

N/A

2006-11-08 03:05:10 · 12 answers · asked by Anonymous in Mathematics

Isnt mass conversion mass breaking up?

2006-11-08 03:04:28 · 1 answers · asked by goring 6 in Physics

There must be an answer. Will it double with double the weight?

2006-11-08 03:04:25 · 1 answers · asked by John 1 in Medicine