Science & Mathematics - 4 December 2007

such as being postively curved (like a sphere), negatively curved (like a saddle), or flat (like a perfect plane)

2007-12-04 15:39:45 · 4 answers · asked by Anonymous in Astronomy & Space

If cytokinesis did not occur what would happen _________.
a. there would be a new cell
If cytokinesis did not occur what would happen _________.
a. there would be a new cell c. there would be one cell with two nuclei
b. there would be one cell with only one large nuclei d. the cell would ALWAYS die
c. there would be one cell with two nuclei
d. the cell would ALWAYS die

2007-12-04 15:38:53 · 1 answers · asked by Anonymous in Biology

1.Fermentation converts NADH back to NAD+ so that glycolysis can continue.
2.Organisms that cannot make their own food are autotrophs.
3. In the dark reactions of photosynthesis, the energy in sunlight is captured and used to make ATP and NADPH.
4.Because they cannot make their own food, autotrophs rely on the food-making ability of green plants.
5. Photosystems are clusters of pigment molecules that are able to capture the energy of sunlight.
6.Glycolysis is an aerobic process that breaks down food molecules to produce energy.
7.When there is no oxygen present, yeast cells break down glucose to form lactic acid and carbon dioxide.
8.Approximately 36 molecules of ATP are formed during cellular respiration.

2007-12-04 15:37:50 · 2 answers · asked by Golu S 1 in Biology

breifly describe how you might obtain a stratified random sample of corn ears in a field

2007-12-04 15:37:35 · 1 answers · asked by Anonymous in Mathematics

so confusing. pls explain if possible.

also, the sum of two numbers is 104. the larger number is 1 less then twice the smaller numbers. find the numbers.

2007-12-04 15:37:00 · 7 answers · asked by Anonymous in Mathematics

Mention changes in specific body cells, thanks . (:

2007-12-04 15:33:53 · 2 answers · asked by Anonymous in Biology

2007-12-04 15:32:41 · 22 answers · asked by my dinosaur life 3 in Physics

Is it true that if you went to the middle of space somewhere and came back to earth you would have aged less

2007-12-04 15:32:14 · 8 answers · asked by Outtamyway 1 in Astronomy & Space

2007-12-04 15:29:57 · 1 answers · asked by LOVE FOREVER 1 in Biology

i am really slow when it comes to math so some help would be nice.lol.

i need help factoring this.

159 = 16t² + 5t


thanks!!

2007-12-04 15:26:54 · 11 answers · asked by lindsey 2 in Mathematics

i need to make a soda can that fills up with 355ml. material A, used for only the top, costs 3 cents per square meter. material B, used for the side and the bottom, costs 5 cents per square meter. how would i start this?

2007-12-04 15:23:32 · 3 answers · asked by ? 3 in Engineering

Soo cann anyone help me with questionnn

2007-12-04 15:21:58 · 2 answers · asked by Anonymous in Biology

yes there is but i want to here ur opions i think there is

2007-12-04 15:17:54 · 25 answers · asked by Larry J 1 in Astronomy & Space

I want to model the continental drift for my science exit project. It is related to plate tectonics, where the earth's surface moves its land masses.What experiment can I do for a visual? Thank you for any help--I'll vote for anyone who makes an attempt to answer it=)

2007-12-04 15:12:29 · 4 answers · asked by Angie 4 in Earth Sciences & Geology

If you have the vectors (x=4+5t, y=5+5t, z=1-4t) and (x=4+s, y=-6+8s, z=7-3s) how could you prove that they lie in parallel planes?

2007-12-04 15:12:06 · 6 answers · asked by chris 2 in Mathematics

I heard this fact recently on tv, I think it was on Discovery:

-The Mayans, thousands of years ago, had calculated the precise date on when the earth would align in such a way in the sky, that it would be in a straight line with the black hole found in the Aquarius constellation. That, they predicted, would create such circumstances as to cause the planet earth to possibly cease to exist.

Apparently, they were extremely accurate and advanced in their astronomical knowledge. All predictions were accurate and had occurred as predicted. Now what? The say that December 12th (or 14th, I forgot), in 2012 would probably be our last day. (!!!!!!!!!!!!!!!!!!!!!!!!!!!!)

Has anyone heard any scientific research or evidence about this subject? Any thoughts on this? Thanks.

2007-12-04 15:11:51 · 13 answers · asked by Trouble 3 in Astronomy & Space

theres this extra credit problem im doing and i reallllly wanna get it right but i forget what to do :( its about a triangle, the area = 35 ft squared, and i need to find the base and heigt. h=b+3. i think so far its 35=1/2(b)(b+3)

please help!

2007-12-04 15:10:52 · 6 answers · asked by kbellx37 2 in Mathematics

I know there are vascines for viruses, but are there any for bacteria, fungi and protozoa?

2007-12-04 15:07:40 · 2 answers · asked by lillyross 1 in Biology

explain to me how to balace this equation

2007-12-04 15:06:25 · 4 answers · asked by Anonymous in Mathematics

How do you multiply a square root/radical with a whole number?

For example.. What's radical two times radical three?

Thank you!

If you can, please tell me how you got your answer.

2007-12-04 15:05:42 · 5 answers · asked by Anonymous in Mathematics

i'm writing a speech on it.
i want to say "no human can make the precise designs perfectly in one night" but that sounds to blah and choppy.
how should i reword it?

2007-12-04 15:00:23 · 7 answers · asked by tbutt(= 1 in Astronomy & Space

When you're standing on the moon, looking up at the sky, can you see Earth? Does it appear in the same general place as the moon does on Earth?

2007-12-04 14:59:17 · 24 answers · asked by Anonymous in Astronomy & Space

2007-12-04 14:58:51 · 5 answers · asked by mustin j 2 in Earth Sciences & Geology

An accident involves a car of mass 1964 kg which approachs a stationary car of mass 1020 kg. The driver of car A applies his brakes 12.3 meters before he crashes into car B. After the collision, car A slides 12.3 meters while car B slides 31.2 meters. The coefficient of kinetic friction between the locked wheels and the road for both cars is 0.630.

How fast was the driver of car A going before he hit the brakes?

I know this is a conservation of energy problem but it has friction involved so I dont know how to appoach the problem

2007-12-04 14:56:02 · 1 answers · asked by nameless 1 in Physics

The number of houses that can be served by a water main is directly proportional to the square of the diameter of the main. This is because the cross-sectional area of the pipe, and thus the number of liters per minute that can flow, varies directly with the square of the diameter. Suppose that the City Waterworks has a 10 cm diameter water main that can supply 50 houses.

I know that the particular equation is h=0.5d^2
I just don't know how you get that. Thank you!

2007-12-04 14:52:55 · 2 answers · asked by music9191 2 in Mathematics

I know how to multiply radicals with radicals.

But I was wondering how you multiply a radical number with a whole number.

For example, what would radical two x radical three be?

Thanks in advance.

2007-12-04 14:51:01 · 4 answers · asked by Anonymous in Mathematics

Ok here is the problem...
-2, 7/8, 0.8, 2.1, 1 1/3

This is the answer I got from least to greatest/
-2, 0.8, 7/8, 1 1/3, 2.1
Is this answer right?

Next one... 0.7, -1, -5/4, 4/3, -2.3, -9/2..I haven't gotten an answer yet for that one...need help...

Next one.. 0.21, 2.3, 8/3, -0.1, -1/5, 0.2222 (forever)
Answer I got: -1/5, -0.1, 0.2222, 0.21, 2.3, 8/3 is this right?

Last one..0.3, 0.333 forever, 0.3030 forever, -0.3, -0.333 forever.
Answer I got: -0.3, 0.333, 0.3, 0.3030, 0.333.
Is this right?
Thanks so much for your time!

2007-12-04 14:48:39 · 9 answers · asked by Anonymous in Mathematics

Is natural resources limited? How limited? Is Earth capable of reproducing those resources, and recovering from harms done by humans.

2007-12-04 14:47:07 · 9 answers · asked by Anonymous in Earth Sciences & Geology

2007-12-04 14:46:10 · 6 answers · asked by elswimchick 3 in Earth Sciences & Geology

I remember seeing a movie and also reading in books about the wild west that before anesthesia was discovered, doctors would operate on people using alcohol as an anesthetic. Does this practice still exist? Is it possible to successfully operate on someone who has passed out after too much drinking? I also heard a similar story about a girl who claimed to have lost her virginity without feeling a thing, because her boyfriend supposedly got her drunk, then "took advantage" when she was passed out. Could something like that happen, presuming the alcohol was not laced with any other substances?

2007-12-04 14:45:27 · 7 answers · asked by phantom8000 3 in Medicine