Science & Mathematics - 23 December 2007

You take the exponent and bring it down in front of the X and then......I can't remember. I think you subtract 1 from the exponent or something.

2007-12-23 09:42:08 · 9 answers · asked by Anonymous in Mathematics

a cyclist, riding steadily from his hometown, reached his destination in 4 1/2 hours. he would have taken 45 minutes less time if he had ridden his bicycle at a speed faster by 3 km/h. find the distance from his hometown to his destination. & also, tell me every step you did to get to the answer. thanks.

2007-12-23 09:41:27 · 5 answers · asked by Withme989 1 in Mathematics

2007-12-23 09:36:13 · 5 answers · asked by Jansen J 4 in Astronomy & Space

Long story short, I am going to make a homemade telescope, and attempt to see Saturn (yeah, another Science Fair project=P). Anyways, I have searched and searched for a way to make one, or at least suggestions on how to make one, but have come up with nothing solid. I don't want to construct this little thing of cardboard, that will only be of some use in seeing the moon. Does anyone know any websites, or anything, that may be of some help?

2007-12-23 09:32:15 · 6 answers · asked by Outer Space 2 in Astronomy & Space

2007-12-23 09:28:58 · 14 answers · asked by Brent C 1 in Agriculture

2007-12-23 09:23:42 · 11 answers · asked by Firelight 2 in Chemistry

A 2.20 sample of a compound gave 5.63 g CO[2] and 2.30 g H[2]O on combustion in air. The compound is known to contain only C, H, O.

2007-12-23 09:21:47 · 3 answers · asked by newyorkgirl 2 in Chemistry

suppose you have a flashlight in one hand and a mirror in the other. turn on the flashlight and photons of light will travel towards the mirror. BUT, when the photons hit the mirror, they will reflect. This implies that while hitting the mirror, the photons decelerate to 0 m/s and continue to decelerate to -c (negative speed of light). In other words, light reflecting off of a surface must reach 0m/s. But doesnt this defy the second postulate of special relativity (light always travels at the speed of light)?

2007-12-23 09:20:25 · 8 answers · asked by Hi 2 in Physics

it's an asteroid, that is supposedly goin to hit mars jan 30th 07. Is this true? Does anyone know? If so where can i find more about it. I've scoured the net.

2007-12-23 09:17:50 · 4 answers · asked by I am everything, and nothing 2 in Astronomy & Space

2007-12-23 09:13:40 · 7 answers · asked by Anonymous in Zoology

I need to find the limit as x--> infinity of cosx/3x, When I look at the graph I see that the function is obviously periodic and oscilates between higher and higher values of y the further you get from the origin in either dirrection. How can I use the squeeze theorem to find the limit of cosx/3x as x goes to infinity?

2007-12-23 09:12:26 · 5 answers · asked by Anonymous in Mathematics

jw..

what about the bible?

2007-12-23 09:10:14 · 13 answers · asked by Anonymous in Paranormal Phenomena

2007-12-23 09:05:14 · 10 answers · asked by Anonymous in Physics

Whenever you hear talk about aliens, its always about them being so advanced, and so amazing.

Who's to say we arn't 10x as advanced as them?

Are humans just so slow intellectually compared to other "beings" out there?

And why are we always like, when are THEY gonna find us?

More like when are WE going to find them!

think about that!

2007-12-23 08:59:50 · 19 answers · asked by The Fluorescent Dalai Lama 2 in Astronomy & Space

just wondering if its a mix of our parents voices or if its just random.

2007-12-23 08:59:10 · 4 answers · asked by Anonymous in Other - Science

did any body know what is different between 5000 series ultra wide angle eyepiece 4.7 or 30mm? i know those eyepiece can see oject sharp but like i mean which one i can see the oject bigger? 4.7 or 30mm?

2007-12-23 08:58:16 · 3 answers · asked by bruceleenjackiechanmpls 1 in Astronomy & Space

2007-12-23 08:57:06 · 6 answers · asked by jetfighter 6 in Physics

2007-12-23 08:55:31 · 13 answers · asked by abcdefghijklmnopqrstuvwxyz.....? 3 in Earth Sciences & Geology

2007-12-23 08:54:04 · 4 answers · asked by Ryan C 1 in Astronomy & Space

2007-12-23 08:50:26 · 2 answers · asked by tudose.lucica 1 in Astronomy & Space

ok, so i have a trebuchet, dr=21 inches, R= 10N. It starts horizontal, and stops instantly at vertical. what is the speed of what i am launching the moment it leaves the trebuchet (tell me if i need to put more information, this is a real trebuchet)

2007-12-23 08:48:42 · 5 answers · asked by tzahaldude 1 in Engineering

I am looking to purchase with a friend an 18 acre field, and we will own half each. Although we will share it, we want to divide it exactly in half with fencing in case of any future problems. the field is an irregular shape, although all the fence lines are straight. We would like to divide it with one straight fence. How do we work out where to put it?

2007-12-23 08:45:56 · 12 answers · asked by florayg 5 in Mathematics

According to the Mayan calander, time ends or something happens. The earth will be exactly in the middle of the milky way and hence gravitational forces could change the magnetic location of the north pole and other geophysical changes could happen relatively quickly. What do you think?

2007-12-23 08:44:01 · 14 answers · asked by Anonymous in Astronomy & Space

2007-12-23 08:41:13 · 4 answers · asked by ? 3 in Medicine

2007-12-23 08:41:07 · 17 answers · asked by Anonymous in Chemistry

Probably it sounds like a vague or ridiculous question for some of you. However, it is sad that if you find out who you were in your ''previous life'', you would know how to break a chain or infinite circle where you're repeating your mistakes over and over.
Please, answer me without laughs but with at least some tolerance and respect.

2007-12-23 08:38:15 · 15 answers · asked by YinYin^_^~!！！！ 无条件为你。。。他还是不懂！！！ 3 in Parapsychology

2007-12-23 08:32:46 · 4 answers · asked by Hayabusa 3 in Mathematics

With Vitamin D and melanin in humans, conversion of light energy into chemical energy takes place, right? Similar processes must occur in other animals. So, photosynthesis?

2007-12-23 08:30:52 · 4 answers · asked by Anonymous in Biology

2007-12-23 08:29:01 · 8 answers · asked by imtds08 1 in Biology

2007-12-23 08:25:03 · 3 answers · asked by Neda J 1 in Biology