Science & Mathematics - 12 December 2007

Molecules are often not composed of one single type of atom. Atoms, almost the smallest building blocks of all life, join together with different types of atoms, and form compounds.

2007-12-12 03:07:43 · 4 answers · asked by Lily 2 in Chemistry

please help!!!!!! thanks so much...!!!

2007-12-12 03:06:30 · 3 answers · asked by im_iz bust it baby>3 2 in Chemistry

Multiply u8 x u4

2007-12-12 03:03:17 · 3 answers · asked by Anonymous in Mathematics

2007-12-12 02:59:50 · 4 answers · asked by KC 1 in Mathematics

2007-12-12 02:58:54 · 7 answers · asked by O'Papa Smurf! 3 in Zoology

2007-12-12 02:56:57 · 9 answers · asked by universe 1 in Chemistry

I'm doing a science project && I need answers!

2007-12-12 02:56:17 · 8 answers · asked by Sydney P 1 in Astronomy & Space

Your supposed to find how long the raduis is. I tried drawing it out but I am still not getting it, I don't get how you can find the radius when your only given 1 number.

2007-12-12 02:54:42 · 8 answers · asked by Anonymous in Mathematics

2007-12-12 02:52:50 · 2 answers · asked by akshay a 1 in Mathematics

The mass of a planet is 1/100 that of Earth and its radius is 1/4 that of Earth. If a person weighs 600N on Earth, what would he weigh on this planet.

The ANSWER IS 96N, how to I get to this?

given constants:
Radius of Earth: 6.37E6 meters
Mass of earth: 5.98E24 meers
Universal gravitational constant: 6.67E-11 Nm^2/kg^2

2007-12-12 02:48:38 · 5 answers · asked by bazjhi 1 in Physics

i need help! i dont know how to find x!!!

2007-12-12 02:48:34 · 15 answers · asked by Anonymous in Mathematics

2007-12-12 02:46:29 · 3 answers · asked by Anonymous in Mathematics

What differs the singularity of a black hole from a white hole?And a black hole from a worm hole?And is it possible to escape a black hole by travelling faster than light?

2007-12-12 02:46:15 · 7 answers · asked by Anonymous in Astronomy & Space

To see the Question click on the link ..

http://solar.njit.edu/~cdenker/physics111h_quiz09.pdf

My comments : is do i have to use theta ..?
Do i have to use m1 , m2 , and m3
what are the components of the oxygen
How the equation looks like

2007-12-12 02:43:39 · 3 answers · asked by Anonymous in Physics

Any tried and true methods for instructing VSL's in pre-cal studies?

2007-12-12 02:41:10 · 3 answers · asked by Anonymous in Mathematics

water is like a conductor but you never hear about a fidh or ashark that like gets struck by lighning...hmmm

2007-12-12 02:37:32 · 2 answers · asked by Ashley 2 in Physics

2007-12-12 02:37:32 · 3 answers · asked by Aks 1 in Other - Science

2007-12-12 02:31:22 · 6 answers · asked by Anonymous in Physics

A father (m=80 kg) and his son (m-40 kg) are ice skating toward each other at an angle of 30 degrees, son is moving towards the x axis at an angle of 30 degrees to the father and father is moving straight toward the origin. Both father and son have a speed of 2.5 m/s. Where they meet the son jumps on top of the father and they slide together acroos the ice.
Determine the magnitude and direction of their common speed just after the collision.

2007-12-12 02:31:22 · 1 answers · asked by Need help plz!!! 1 in Physics

Why is it that without our sense of smell, we can only taste the bland basics (sweet, sour, bitter, salty, and umami)?

2007-12-12 02:30:19 · 8 answers · asked by Gemma 2 in Biology

i did an investigation which involved me letting a truck go down a ramp + putting weights in it each time...started with no weights then put 500g, then 1k, then 1500g, then 2k. need to know the answer for an assignment for uni.

2007-12-12 02:29:01 · 2 answers · asked by Anonymous in Physics

If the crytal was held at an angle of 18.0o to the beam. What was the wavelength of the X-ray radiation in nm ?

2007-12-12 02:28:27 · 3 answers · asked by chemical.garry 1 in Chemistry

can somebody give me a basic explanation of a reflecting telescope and a refracting telescope please?

i think im right in saying a wider aperture gives a better telescope because it catches more light, is this correct?

however, does the length of a telescope make a difference?
and by extension of that question, will a longer focal length make a better telescope?

when i talk about better im talking about resolution and magnification. i understand what these words mean. so, what effect would it have on these 2 things if i was to increase the focal length of my telescope and why?

and does it work one way for a refractor and one way for a reflector? if so, then why?

2007-12-12 02:27:36 · 8 answers · asked by fpa06mr 5 in Astronomy & Space

A boat floating in fresh water displaced 16000 N of water. How many newtons of salt-water would it displace if it floats in salt-water of a specific gravity of 1.17?

The ANSWER IS 14,000 N, but how to I get that?

2007-12-12 02:21:12 · 5 answers · asked by bazjhi 1 in Physics

I'm curious to find out what caused the girls deformations. The news didn't say what could've possibly caused it.

2007-12-12 02:21:00 · 11 answers · asked by eye yolk a 2 in Paranormal Phenomena

What is the implication if a drug has a different protein binding value in different people???

2007-12-12 02:20:58 · 2 answers · asked by Anonymous in Biology

You manage a gang with infinitely many gangsters. Each gangster in the gang has a finite number of enemies who will try to kill him if they meet. This hatred relation is commutative: whenever A wants to kill B, B wants to kill A.

You want to organize a meeting with infinitely members of the gang, but you want to avoid shoot-outs. So, you have to choose the gangsters in such a way that no 2 gangsters are enemies. How can you do that? What's the choice algorithm?

Does this require the axiom of choice?

2007-12-12 02:20:42 · 1 answers · asked by Steiner 7 in Mathematics

2007-12-12 02:14:26 · 6 answers · asked by Anonymous in Biology

A. The hydrocarbon burns completely, producing 7.2 grams of water and 7.2 liters of CO2 at standard conditions. What is the empirical formula of the hydrocarbon?

B. Calculate the mass in grams of O2 required for the complete combustion of the sample of the hydrocarbon described in A.

C. The hydrocarbon dissolves readily in CHCl3. The freezing point of a solution prepared by mixing 100 grams of CHCl3 and .6 grams of the hydrocarbon is -64 degrees celsius. The molal freezing point depression constant of CHCl3 is 4.68 degrees celsius/molal and its normal freezing point is -63.5 degrees celsius. Calculate the molecular weight of the hydrocarbon.

D. What is the molecular formula of the hydrocarbon?

2007-12-12 02:14:19 · 1 answers · asked by Mike K 1 in Chemistry

http://www.reuters.com/article/healthNews/idUSN1043228620071210?feedType=RSS&feedName=healthNews&rpc=22&sp=true

Here is the "latest" rule to evolution! We humans have been "suffering" from the "breakneck" speed of the evolution of "our" species.

Months ago saw me asking the Y!A collective why oppossums haven't developed wings or longer legs in an attempt to evolved themselves out of the plight of becoming road pizza.

ALL the answers seemed to explain to me that the evolution of a particular species takes thousands of millenia to occur.

Well, apparently, these people were WRONG! Any of you have a better explanation for this story?

2007-12-12 02:14:06 · 3 answers · asked by ? 6 in Biology