Science & Mathematics - 8 November 2007

How can they measure and know that some star is like, 12,000 trillion miles away?

2007-11-08 16:33:45 · 9 answers · asked by Aint No Bugs On Me 4 in Astronomy & Space

force requiered to cause the car to go around the corner at constant speed:

a. the centripetal force increases
b. the centripetal force decreases
c. the centripetal force remains the same
d. none of the above

I think it's d using common sense I can't find this at google or my textbook so am I right or wrong

2007-11-08 16:33:42 · 2 answers · asked by Too CooL 3 in Physics

2007-11-08 16:29:45 · 1 answers · asked by Maureen T 1 in Chemistry

help!!!!!!!!

2007-11-08 16:29:00 · 2 answers · asked by Anonymous in Biology

a) the internal energy of a system increases when work is done on the system and heat is flowing into the system

b) the internal energy of a system increases when more work is done by the system than heat was flowing into the system

c) the system does work on the surrounding when an ideal gas compresses against a constant external pressure

d) the enthalpy of a system decreases when work is done on the system and heat is flowing into the system

e) the enthalpy of a system increases when more work is done by the system than heat was flowing into the system

2007-11-08 16:24:24 · 1 answers · asked by 41 1 in Chemistry

and what is cellular respiration?

2007-11-08 16:20:06 · 2 answers · asked by Anonymous in Biology

2007-11-08 16:15:24 · 8 answers · asked by Trent R 1 in Geography

Research is being conducted on the Human Genome and in Genetic Engineering, it might soon be possible to create a "made to order" baby or detect and correct flaws in DNA of adults. What problems or benefits do you see in these possibilities?

What do you think?

I don't believe that would be right. People with disabilities and disorders have an impact on other people, we wouldnt all want to be the same.

2007-11-08 16:14:34 · 3 answers · asked by Anonymous in Biology

Can you simplfy 6/9?

2007-11-08 16:14:10 · 13 answers · asked by Anonymous in Mathematics

I saw a small owl (I would say 6-7 inches tall) that was all pale grey with a lighter colored facial disk. I have been trying to find something that looks like it online, but can't find anything with pictures....

Anyone have any idea what it might be, so that I have some idea which direction I should look in....

I have lived here 35 year and never seen an owl - so this is kinda neat, I would just like to figure out what it is....could it be a young version of something else? I have no idea how fast birds grow.

Any suggestions appreciated.
Thanks a bunch

2007-11-08 16:13:59 · 5 answers · asked by freshbliss 6 in Zoology

Do fish sleep? I'm talking about the ones that live in rivers. If they sleep, wouldn't the river just wash them out to the ocean?

2007-11-08 16:13:29 · 9 answers · asked by Anonymous in Zoology

Computer Science from 7.1 of computer organization and design textbook Patterson and Henessy

2007-11-08 16:11:28 · 4 answers · asked by YoungBlackHawk 2 in Other - Science

ALL excited electrons give off energy when they return to their ground state from an excited state. Why don’t all heated substances give off colored light?

2007-11-08 16:10:20 · 2 answers · asked by Anonymous in Physics

Spirit and Opportunity for their research?

Specifics would be very helpful. I find this subject fascinating and I can't find much on the internet. Links would be helpful too, if you know of any. Thanks.

2007-11-08 16:09:33 · 7 answers · asked by higherlovetx 5 in Astronomy & Space

How is it that the Appalacian Mountains are the oldest mountain chain in the US? What about the Rocky Mountains?

2007-11-08 16:08:25 · 4 answers · asked by Anonymous in Geography

2007-11-08 16:07:49 · 1 answers · asked by freeaakxii 2 in Earth Sciences & Geology

By how much does the carrier lengthen when it is traveling in the warm Mediterranean Sea at a temperature of 21°C?

2007-11-08 16:07:08 · 2 answers · asked by Anonymous in Physics

2007-11-08 16:05:33 · 1 answers · asked by tongbahinee 2 in Earth Sciences & Geology

a) passing through pts (8,-2), (6,2) and (3,-7)

b) passes through the origin, radius=10 and abcissa of the center is -6.

2007-11-08 16:05:03 · 3 answers · asked by Anonymous in Mathematics

Why do we age in our skin and bones?
What makes our bodies wrinkle up and weaken?
Can it be stopped?

2007-11-08 16:04:01 · 5 answers · asked by Anonymous in Biology

Furthermore, what's it's gravitational attraction to the Earth?

How would I calculate these two things?

2007-11-08 15:59:59 · 2 answers · asked by Kiwi K 1 in Physics

The specific question given was:
Use the photoelectric effect to explain the emergence of the quantum theory. How did this concept eventually lead to the wave-particle duality of matter?
Please help me with any answers you have!
Thanks :)

2007-11-08 15:59:05 · 2 answers · asked by Leslie 2 in Chemistry

2007-11-08 15:58:51 · 5 answers · asked by airbourne83 1 in Astronomy & Space

Does this include negatives like (-9)^0
wouldnt it be -1
if its just 1 how can it be the same as (9)^0 if they are opposites.
I dont understand the 0 exponent at all!!

2007-11-08 15:57:42 · 6 answers · asked by Anonymous in Mathematics

An 0.8-kg object is attached to one end of a spring and the system is set into simple harmonic motion. Please take the values of A and T as: A = 0.091 m and T = 1 s. If the amplitude, A, of the motion is .091m, and angular frequency omega is 6.283 rad/s and the spring constant is 31.582, then
a) Find the speed of the object at t=3s
b) Find the magnitude of the objects acceleration at t=3s

2007-11-08 15:56:03 · 1 answers · asked by Bob P 1 in Physics

Logically, planets don't NEED oxygen/water to support life, if we don't know about an alien yet, how do we know they need oxygen? what if they have some super advance organ that allows them to breathe hydrogen or some unknown gas?

And out of all the planets out there, it's hard to believe a 1 out 1,000,000,000,000,000,000,000,000 chance of earth being the only planet with life....

2007-11-08 15:53:53 · 13 answers · asked by Jesse 3 in Astronomy & Space

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Algebra%20II/album%20name/Picture7.png

2007-11-08 15:52:03 · 11 answers · asked by Anonymous in Mathematics

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Algebra%20II/album%20name/Picture6.png

2007-11-08 15:51:07 · 2 answers · asked by Anonymous in Mathematics

I had a doubt regarding the fireworks....

Do chemical contents of these any Fireworks/Crackers contain Nitrogen/Phosphorus /Potassium(NPK) elements/oxides which may serve Fertilizers for plants?

Is it safe to put firework chemical powder content in Plants soil?

2007-11-08 15:50:09 · 2 answers · asked by Anonymous in Chemistry

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Algebra%20II/album%20name/Picture5.png

2007-11-08 15:49:46 · 2 answers · asked by Anonymous in Mathematics