Science & Mathematics - 4 December 2006

2006-12-04 06:40:06 · 9 answers · asked by lntpixie 1 in Mathematics

questions about planets

2006-12-04 06:37:19 · 2 answers · asked by dude s 1 in Astronomy & Space

2006-12-04 06:36:18 · 4 answers · asked by kiddo 3 in Chemistry

2006-12-04 06:36:04 · 2 answers · asked by Spellcaster 1 in Zoology

A large water tank in a country with a perfectly regular climate is exactly 48 feet high. During the rainy season, each day has exactly 12 hours of rainfall followed by 12 hours of evaporation. The water level in the tank increases at a uniform rate of 1 foot per hour during the 12 hours of rainfall, and it decreases at a uniform rate of half a foot per hour during the 12 hours of evaporation. If the tank is empty at the beginning of a 12 hour rainfall period, how many hours will it take for the water level in the tank to reach the top of the tank for the first time?

For example, after 12 hours the water level is 12 feet, while after 24 hours the level is 6 feet.

2006-12-04 06:35:22 · 2 answers · asked by Anonymous in Mathematics

Well, that´s about it, I´d just picked a glass (made of a very thick glass by the way, about 2,1 mm or so) for I was going to have a drink in my place, and then, as soon as I got the glass in my hand, It felt to be actually "undoing" itself into fine grains of glass. The glass was of a fair quality. It had been in my possession for more then ten years and I used it very often, probably everyday, I still have four more just like it. It had absolutely no scratches nor had it ever fallen to the ground or anything that could have compromised it´s physical integrity. When I got the glass I made absolutely no pressure on it, it was empty, for I was going to get a bottle of coke, and then it turned into dust right there in my hand. HELP! WHAT THE *@#$ WAS THAT? I don´t know, I figured it might have something to do with estatic electricity, but I can´t explain it. Can someone tell me what happened?

2006-12-04 06:35:17 · 2 answers · asked by Anonymous in Physics

2006-12-04 06:33:22 · 5 answers · asked by mlg102002 1 in Earth Sciences & Geology

the earth has a radius of 6400km what is the distance round the equator ? help - homework please show working

2006-12-04 06:30:50 · 16 answers · asked by Anonymous in Mathematics

2006-12-04 06:30:41 · 3 answers · asked by prettyme25y 1 in Chemistry

Does anybody know what birth defects are being caused by women who take paxil while pregnant?

I take Paxil and I am of child bearing age, and hope to have a child soon. I've been wanting to get off this drug for a while, but it's going to be a hassle since you have to wean off of it because a lot of people who stop taking it without weaning have committed suicide.

The articles I've read regarding Paxil and birth defects just vaguely allude to birth defects and don't go into detail about what these birth defects actually are.

2006-12-04 06:30:04 · 4 answers · asked by concretebrunette 4 in Medicine

2006-12-04 06:29:58 · 6 answers · asked by Anonymous in Mathematics

i know that nasa has a vessel using ion propulsion to move since ion propulsionis self sustaining, in space wouldnt it always pick up speed if left on? couldnt this end up being a time travelling vehicle?

2006-12-04 06:29:12 · 2 answers · asked by Richard C 3 in Physics

Light takes four years to arrive at Earth from the nearest star other than our sun. How many hours is this journey?
A 35000
B 2.1 million
C 126 million
D 35 Mega-hours
i got 35.040 so i don't know if the answer is A or D. please help

2006-12-04 06:27:57 · 8 answers · asked by star wars freak 2 in Astronomy & Space

Is there a test one can do?

2006-12-04 06:25:28 · 4 answers · asked by Joyce 4 in Biology

1- In rabbits, short hair is due to a dominant allele (S) & long hair to a recessive allele (s). A cross between a short haired- female & a long haired male produces a litter of 1 long haired & 7 short haired offspring.
a- What are the genotypes of the parents?
b-What phenotypic ratio was expected in the offspring generation?
c-How many of the 8 offspring were expected to be long haired?
d-If the female had been homozygous short haired animal,how many of the 8 offspring would have been expected to be long haired?
----
Should my punnett square be set up as Ss x ss? I think that's wrong... and I'm confusing myself. = /
I know it's probably a lot simpler then I'm making it seem.

I know it's a lot, but can someone please explain this to me, I would really appreciate it. Thank you! = )

2006-12-04 06:24:34 · 2 answers · asked by Miss*Curious 5 in Biology

What kinds of methods do astronomers use to learn about stars?

2006-12-04 06:24:04 · 2 answers · asked by Michelle R 2 in Astronomy & Space

Does a fake diamond cut glass like a real diamond?

2006-12-04 06:22:42 · 14 answers · asked by Dustyn P 1 in Earth Sciences & Geology

Ca(OH)2(aq) + HCl(aq) →




a) Water and a salt are the products


b) This is an elmination reaction


c) When balanced, the stoichiometric coefficient of HCl is two


d) The pH of the resulting solution would be a value other than seven

2006-12-04 06:20:49 · 3 answers · asked by Christie 1 in Chemistry

1) x - (2x - 8) = 3x - 2(x + 5)
2) x - (2x - 6) = 3x - 2(x + 5)
Please provide all the work.

2006-12-04 06:20:45 · 7 answers · asked by katlover118 2 in Mathematics

2006-12-04 06:18:57 · 8 answers · asked by buffaloforman 1 in Zoology

2006-12-04 06:18:12 · 2 answers · asked by heinz_fur_alles 1 in Chemistry

Which of the following are conjugate acid-base pairs and why ?


a) NaF and F -
b) HNO3 and HNO2
c) HI and I -
d) CH3COOH and CH3COO -
e) NH3 and NH2-

2006-12-04 06:18:02 · 2 answers · asked by Christie 1 in Chemistry

2006-12-04 06:13:35 · 8 answers · asked by huw 4x4 3 in Astronomy & Space

a) HIO4 and IO4-
b) HClO4 and Cl -
c) KOH and OH -
d) HBr and Br -
e) H3O+ and H2O

2006-12-04 06:13:14 · 3 answers · asked by r.y 2 in Chemistry

2006-12-04 06:13:13 · 7 answers · asked by Andrew T 1 in Medicine

Four of the five choices listed below describe changes at the chromosomal level. Select the exception.

1. Base-pair substitution

2. Duplication

3. Translocation

4. Deletion

5. Inversion

(I know 1, 3, 4, are not the answer. just not sure about 2 and 5!)

2006-12-04 06:12:54 · 7 answers · asked by wendy h 3 in Biology

I am trying to create real life situation word problem that fits into the equation (x + 3)(x - 4) = 0, and also express the situation as the same equation.

2006-12-04 06:11:03 · 5 answers · asked by poochie 1 in Mathematics

If a base substitution of "T" in place of "C" occurred in position 3 of the transcribed DNA strand sequence "ACC" you would predict the protein product:

a. will be one amino acid different than the normal protein

b. will remain unchanged

c. will have a vastly different set of amino acids

d. will be smaller than the normal protein

2006-12-04 06:10:54 · 3 answers · asked by R C 2 in Biology

me and my family are going out there to sight see around christmas time please give me answers asap were leaving soon

2006-12-04 06:10:09 · 6 answers · asked by Anonymous in Weather

2006-12-04 06:09:56 · 3 answers · asked by *mar29* 2 in Zoology