Science & Mathematics - 18 September 2007

2007-09-18 06:45:33 · 6 answers · asked by Anonymous in Biology

Could anybody give me a precise mathematical definition of a phase space?

I don't need an explanation of it, just the definition. Thanks :)

2007-09-18 06:43:41 · 4 answers · asked by kristinakiki777 2 in Mathematics

inheritance based on the science of genetics. He identified heterozygous individuals for flower color that had two alleles (one r=recessive white color allele and one R=dominant red color allele). When these individuals where mated, 3/4 of the ofsprings where observed to have red flowers and 1/4 had white flowers.
We assume that each parent is equally likely to give either of the two alleles and that, if either one of two of the alleles in a pair is dominant (R), the offspring will have red flowers.
a) What is the probability that an offspring in this mating has at least one dominant allele?
b) What is the probabolity that an offspring has at least one recessive allele?
c) What is the probability that an offspring has one recessive allele, given that the offspring has red flowers?

2007-09-18 06:43:32 · 8 answers · asked by kondiii 1 in Mathematics

2007-09-18 06:43:27 · 11 answers · asked by Anonymous in Mathematics

Can someone explain *why this is true?

2007-09-18 06:41:53 · 5 answers · asked by RogerDodger 1 in Mathematics

i have the numbers , need to know how many turns right and
left. only 3 numbers.
thanks

2007-09-18 06:41:14 · 1 answers · asked by augie1 1 in Engineering

The slope of this equation is -2 and the y-intercept is 0,4. i need to know how i solve for the x intercept so i can graph a line.

2007-09-18 06:39:41 · 6 answers · asked by Anonymous in Mathematics

2007-09-18 06:35:20 · 8 answers · asked by glass_commander 2 in Mathematics

say you're at ground level during an earthquake vs. on a mountain. is the shock greater, lower, the same?

2007-09-18 06:35:11 · 5 answers · asked by halimi022 1 in Physics

2007-09-18 06:34:49 · 4 answers · asked by Anonymous in Weather

How does salt get an ice-water mixture to be colder? I mean... I use salt to melt ice on the road in the winter time. Salt to bring ice at a higher temperature so, it's in a state of liquid form and not solid. I could never figure this out.

2007-09-18 06:33:52 · 2 answers · asked by Anonymous in Chemistry

2007-09-18 06:32:43 · 16 answers · asked by Anonymous in Mathematics

Two samples, A and B, of equal mass are placed ina graduate cylinder containing 5.00 mL of water. A dislaces twice as much water as sample B. Which sample is more dense? By how much?

____
I'm guessing sample A??

2007-09-18 06:32:08 · 6 answers · asked by kat 3 in Chemistry

please help me find equation instandard form with all interger coefficients of the line perpendicular to x+3y=12 and passing through (9,-5)

2007-09-18 06:30:39 · 3 answers · asked by Onika D 1 in Mathematics

i am that tall how many ft is that
and how do you convert it from inches to ft

2007-09-18 06:30:24 · 10 answers · asked by Anonymous in Mathematics

A 0.4230 g sample of impure sodium nitrate (contains sodium nitrate plus inert ingredients) was heated, converting all the sodium nitrate to 0.2292 g of sodium nitrite and oxygen gas. Determine the percent of sodium nitrate in the original sample.

sodium nitrate in the original sample =__________%

I'm having I very tough time with this problem, can someone pleeze help me! I hate Chemistry, it's so hard :(

2007-09-18 06:30:15 · 2 answers · asked by Anonymous in Chemistry

A point on rotating turntable 21.5 cm from the center accelerates from rest to a final speed of .640 m/s in 1.70s. At t=1.28 s, find the magnitude and direction of each of the following:
(a) the radial acceleration
(b) the tangential acceleration

I'm not sure how to figure out the radial acceleration since this in not uniform circular motion. Thanks!

2007-09-18 06:26:58 · 3 answers · asked by Anonymous in Physics

How do you solve for the angle of a right triangle if you are only given one side (the hypotenuse)? Thanks

2007-09-18 06:26:50 · 10 answers · asked by AlaskaGirl 4 in Mathematics

Hey, I've got all my sums right, I'm just stuck on this one, it's format is completely different than the rest of the sums and it's boggling my mind...
x=3+4y
y=2+3x

If you don't want to just give me the answer then thats fine, could someone just explain how to do it please, much appreciated!

2007-09-18 06:26:05 · 5 answers · asked by Anonymous in Mathematics

The denisty of sulfur is 2.07 g/cm^3. How Many S atoms are there in 4.48 cm^3 of sulfur sample?


If S atoms are joined into S8 molecules in the sample, how many S8 molecules are there in the sample?


How do i do this???

2007-09-18 06:26:00 · 2 answers · asked by mike g 1 in Chemistry

pleeeeeeeeeeeeeeeaaaaaaaaaaase help, needs answering by tomorrow, 19th september.
thankyou sooooooooooo much.

2007-09-18 06:25:54 · 1 answers · asked by loopylittlelisa 1 in Chemistry

like if you think about something and really focus on it it'll happen? it's explained in the book "The Secret" how can i focus on it better??

2007-09-18 06:24:02 · 14 answers · asked by mystikal_phoenix88 1 in Other - Alternative

There are gas planets, can there be gas moons?

2007-09-18 06:23:28 · 5 answers · asked by Angela 1 in Astronomy & Space

2007-09-18 06:18:59 · 4 answers · asked by Anonymous in Chemistry

Does anyone know how to describe the structure of the glucose molecule and what the shape is about?

2007-09-18 06:17:18 · 1 answers · asked by chandakay05 1 in Chemistry

The SAT scores of 1.4 million students are roughly normal with a mean of 1026 and standard deviation of 209.

I found the proportion of all students who took the SAT that had scores of at least 700 in the first problem and the answer came out to be 94%.

The next question is what is the 60% percentile of the SAT score?

I need to be able to show work without using a calculator..answers are much appreciated!!!

2007-09-18 06:16:53 · 6 answers · asked by Bethany 2 in Mathematics

From what i hear they can put 12 tons or 24,000 lbs onto geostationary orbit for a paltry 90 millions dollars, that sounds like a good deal to me but i need a second opinion.

2007-09-18 06:16:38 · 3 answers · asked by Anonymous in Astronomy & Space

2007-09-18 06:14:26 · 3 answers · asked by Anonymous in Physics

2007-09-18 06:12:26 · 6 answers · asked by ehasan4u36 2 in Earth Sciences & Geology

We did a lab and we put a piece of zinc in hydrochloric acid, placed our thumb over the test tube for one minute, then put a piece of burning splint is over it. I don't understand WHY the chemical change happened. please help me!

2007-09-18 06:12:03 · 2 answers · asked by Stephanieeexoxo 2 in Chemistry