Science & Mathematics - 15 December 2007

2007-12-15 15:33:46 · 10 answers · asked by John Doe 1 in Astronomy & Space

I am trying to put together a earthquake survival kit to put in my car. I have a 9month old baby. SHe uses formula and eats gerber food. Should I put some of these in the bag if I will keep it in the car?? I am concerned about the change in temperature and the condition of the food. I know reular food shouldnt be kept in cars under sun or extreme heat conditions. Any ideas??? What about powder formula??

2007-12-15 15:32:56 · 5 answers · asked by Kitiara_DSev 2 in Earth Sciences & Geology

whats the difference and simularities!!!!!!!!!!!!!

2007-12-15 15:31:44 · 7 answers · asked by DO WORK SON!!!!! 1 in Biology

Just making sure if it would work for my Geology class. Thanks a bunch.


Heres the link its about global warming and coral reefs...I'm just wondering if I could use this for a current event and if it relates to Geology :


http://www.sciencedaily.com/releases/2007/12/071213152600.htm#

2007-12-15 15:31:07 · 5 answers · asked by Janie 3 in Earth Sciences & Geology

(1) x = 4
(2) x^2 + y^2 = 4
(3) x + y = 16
(4) x^2 + y^2 = 16

2007-12-15 15:28:06 · 4 answers · asked by Kevin G 2 in Mathematics

definate blue, green, red & yellow lights clustered together, much larger than the two jets I've seen pass it. It changes shape or possibly rotating seems triangular, then flattens out. anyone else seeing this?

2007-12-15 15:27:27 · 10 answers · asked by Clycs 4 in Astronomy & Space

Or, do any other animals have sex for fun (not just because they need to reproduce)?

2007-12-15 15:26:23 · 3 answers · asked by NAimkyki E 2 in Zoology

hey... i've been doing a survey for school. The data i collected goes this way....

x f(x)
0 0
10 0,2
20 1,2
30 4,2
40 7,7
50 11,8
60 18,8
70 31,6
80 46,6
90 69,8
100 100

the question is:... CAN I GET A FUNCTION FROM THIS DATA... OR WOULD IT BE JUST APPROXIMATE...? IF I CAN, WHICH IS THAT FUNCTION?.... PLEASE, SHOW HOW YOU REALIZED... THANKS


PS: THIS FUNCTION WOULD BE DEFINED FOR ALL x VALUES BETWEEN 0 AND 100... thanks!!

2007-12-15 15:26:16 · 3 answers · asked by Q&A 3 in Mathematics

thanks.

2007-12-15 15:24:40 · 4 answers · asked by Anonymous in Biology

Knowing this, how do you match this type of movment across a cell membrane to its definition:

1._____Diffusion
2._____Osmosis
3._____Facilitated diffusion
4.____Active transport

a. Diffusion of molecules through a protein channel
b. diffusion of water through a membrane
c. movement of molecules to achieve equilibrium
d. movement of molecules against a concentration

2007-12-15 15:22:27 · 9 answers · asked by Anonymous in Biology

2007-12-15 15:20:52 · 6 answers · asked by Chad H 1 in Physics

In my book, it says that one strand of a DNA molecule can serve as a template for missing a new complementary strand. What does this mean? I know that hydrogen bonds hold the nitrogenous bases together, and covalent bonds between sugar and phosphate groups on the outside handrail of the ladder hold the chains together. However, I have no idea what the defintion of template means in this context.

Also, there was a question on my study guide:

The primary function of DNA in cells is to:

a. serve as a storage form for unused nucleotides
b. occupy space in the nucleus to keep the nucleus from collapsing
c. store information that tells the cells which proteins to make
d. serve as a template for making long, spiral carbohydrates.

I chose C, because it is the only one that makes sense, but choice D bothers me even though I don't think they make spiral carbohydrates. The template word is just so ambiguous in my mind.

Help would be much appreciated.

2007-12-15 15:18:22 · 8 answers · asked by Anonymous in Biology

Who else hates when people answer questions in this category with "I'm not going to do your homework for you" or something like that? That is so annoying... What's the point of answering because if you don't answer at all then you're still not doing my homework for me... Or why are you even on Yahoo! ANSWERS if you're not going to give me an ANSWER?! That just ticks me off.

2007-12-15 15:18:06 · 10 answers · asked by shaan 4 in Mathematics

Have you ever thought what eternal life is? Or mabye what infinite is. Can anyone just tell me what exactly they think forever is.I've thought when we get to heaven it will be just like 100yrs. on earth x forever. Just give it thought.

2007-12-15 15:17:06 · 5 answers · asked by mathman 1 in Astronomy & Space

How does one determine the amount of energy is a rubber band that has been twisted numerous times. As in a rubber band propeller engine

2007-12-15 15:15:54 · 3 answers · asked by Iravan 1 in Physics

I have been given/ have figured out:
the boyant force, the mass of the air in the balloon, the mass of the load, the volume of the balloon, the temperature of the surrounding air, the atmospheric pressure, the density of the air, and air molar mass.
but i dont know how to find what the air temperature must be to lift the balloon and load. Help?? her's the question:

A hot air balloon stays aloft because hot air at atmospheric pressure is less dense than cooler air at the same pressure. If the volume of the balloon is 500m^3 and the surrounding iar is at 15 degrees C, what must the temperature of the air in the balloon be for it to lift the total load of 290 kg(in addition to the mass of the hot air)? The density of air at 15 degrees C and atmpospheric pressure 1.013 x 10^5 Pa is 1.23Kg/m^3. Air molar mass is 29g/mol. Present your answer in Fahrenheits rounded to the whole number.

2007-12-15 15:15:45 · 1 answers · asked by Anonymous in Engineering

You have a square cam, and an accentric,circular cam - bulging from the shaft. If you traced the up and down (SHM?) movement of the follower against a moving strip of paper, in what respects would the traces differ from each other, seeing that one cam is sharp and pointy and the other is smooth and circular. In both cases there is a regular changing of a ('radius' ?), but how would you describe this mathematically..?

2007-12-15 15:15:02 · 2 answers · asked by c0cky 5 in Engineering

This is a differential equations problem. I think you have to find y complementary and y particular. The e throws me off. Please show how you did it. Thanks a bunch.

2007-12-15 15:14:33 · 2 answers · asked by Anonymous in Mathematics

2007-12-15 15:10:28 · 5 answers · asked by Starryn 7 in Astronomy & Space

2007-12-15 15:10:10 · 1 answers · asked by carlo.luna 2 in Physics

2007-12-15 15:06:52 · 11 answers · asked by summi 2 in Biology

2007-12-15 15:03:49 · 6 answers · asked by lil goon 23 1 in Earth Sciences & Geology

Knowing this, how do you match these functions:

1._____Allows materials in and out of a cell
2.______contains water, nutriets and waste
3.______controls cell activities
4.______synthesizes proteins
5.______packages proteins
6.______synthesizes lipids
7. ______synthesizes sugar from sunlight in autotrophs
8.______ Make energy the cell can use
9. ______contains the organelles
10. ______Transports proteins
11. _______Supports and protects plant cells
12. ________Cellular digestion

a. Nucleus c. Rough ER e. cytoplasm
b. cell membrane d. Ribosome f. lysosome
g. Golgi apparatus h. Chloroplast I. Vacuole
J. Smooth ER k. Mitochondria L. Cell Wall

2007-12-15 15:03:22 · 12 answers · asked by Anonymous in Biology

2007-12-15 15:02:26 · 1 answers · asked by humble.earthling 2 in Physics

Gay-Lussac's law is also charles law.

is P1P2/T1T2 qualitative or quantitative?

2007-12-15 15:00:23 · 2 answers · asked by carsmithol 2 in Chemistry

I've been thinking a half-cracked egg, plastic egg.
i also need to poke holes in it for a nuclear pore so it must be strong enough..
any ideas would be helpful!

2007-12-15 14:57:27 · 4 answers · asked by Anonymous in Biology

2007-12-15 14:56:11 · 2 answers · asked by Anonymous in Earth Sciences & Geology

Knowing this, how do you match these macromolecules to their monomers:

1. _____Carbohydrates
2.______ Protein
3.______lipids
4.______nucleic acids

a. amino acids
b. fatty acids and glycerol
c. nucleotides
d. sugar

CSN YOU PLEASE GIVE ME AN EXAMPLE OF EACH SO THAT I CAN UNDERSTAND? THANKS!!

2007-12-15 14:55:27 · 10 answers · asked by Anonymous in Biology

I just finished watching a DVD called "Cracking the Code of Life", and in one part, a scientist told the interviewer that only 1.5% of human DNA is genes, and the other 98.5% is useless DNA that have survived since the beginning of life and are just hitchhiking on our bodies. Is that true?

2007-12-15 14:53:23 · 17 answers · asked by Anonymous in Biology

please answer .
for science question

2007-12-15 14:47:51 · 7 answers · asked by Kisses! -A 2 in Chemistry