Science & Mathematics - 18 December 2007

I was driving to work this morning and saw a flock of birds flying in a V formation. Why do you do this?

2007-12-18 11:39:17 · 6 answers · asked by Stephanie K 2 in Zoology

2007-12-18 11:35:34 · 7 answers · asked by Chance D 1 in Geography

Consider the region R bounded on top by z=1-x and on the side by y=1-x^2 which lies in the first octant.

a- sketch the region R. (I'm working on it now)
b- Find the volume of the region R. ( I know i have to triple integrate but i don't know what the interval limits or integrand should be. I need to know how to set up the integration.)

thank you for your time.

2007-12-18 11:33:20 · 1 answers · asked by Kala J 3 in Mathematics

2007-12-18 11:31:50 · 4 answers · asked by Anonymous in Zoology

After a canon ball is fired into fricionless space, the amount of force needed to keep it going equals.

A) twice the force with which it was fired.
B) the same amount of force with which it was fired.
C) one half the force with which it was fired.
D) zero, since no force is necessary to keep it moving.

2007-12-18 11:31:44 · 3 answers · asked by Anonymous in Physics

so, what the hell is dark energy? and einstein said its not a anti-gravity energy which modern scientists disagree, is that true as well?

2007-12-18 11:31:24 · 8 answers · asked by Anonymous in Astronomy & Space

2007-12-18 11:30:33 · 5 answers · asked by Tland 3 in Zoology

is that true?

in science my teacher
was saying there is no such thing as color
cus the only reason you see color is cus of the light

for example
if the shirt was green it would seem green in the light
but in the dark its no color
so if there was no light
there wont be color

is that true?

2007-12-18 11:26:22 · 6 answers · asked by Derp 3 in Other - Science

I have trigeminal neuralgia. I've taken Carbamazepine but I was wondering if there was something natural I can take or something I can do at home to help with the pain.

2007-12-18 11:24:00 · 4 answers · asked by Anonymous in Medicine

2007-12-18 11:23:49 · 21 answers · asked by Anonymous in Engineering

A high speed proton has kenetic energy of 898 MeV. What is its speed? (the rest energy of a proton is 939 MeV) The answer is .859c but i am not sure how to solve it.

2007-12-18 11:22:32 · 1 answers · asked by mastersource2005 5 in Physics

2007-12-18 11:20:15 · 4 answers · asked by Matt S. 2 in Other - Science

Explain please

2007-12-18 11:15:17 · 3 answers · asked by Anonymous in Biology

Given that -1 is a zero of f(x)= x^4 + 5x^3 -4x^2-16x-8, find the remaining zeros.

2007-12-18 11:14:24 · 1 answers · asked by Anonymous in Mathematics

Hypothetically speaking, lets say there was 3 elements A B and C. We figured out that the ratio is 1:2:3.
How do we know how to write the formula?
AB2C3, B2C3A, C3B2A all fit the ratio, so how do we determine the order? Does it have to do with the mass number?

2007-12-18 11:12:58 · 4 answers · asked by Anonymous in Chemistry

What is the voltage change when
a) an electric field does 12J of work on .0001C charge?
b) the same electric field does 24J of work on a .0002C?

2007-12-18 11:12:13 · 2 answers · asked by izzabella_74 3 in Engineering

Science tells us that everything in existance is held within the universe, that which came into being one cold night in 11,254,647,011 B.C. (lol... I made that part up).

Do you think space goes on forever? That's a hell of a long ways ya know. Or... eventually does it just curve backaround on itself? If so, if it is just a big round ball, what is it contained within?

Of how about the old cosmology approach by good old Steven (Hawkins). That our universe could simply be an atom in some other, much larger existences universe... Or that an atom under our fingernail could be a universe for some civilization that evolved quickly? We wash our hands and whoooosh... God just initiated the biggest flood imaginable...

Don't these questions just hurt your mind?

2007-12-18 11:11:49 · 12 answers · asked by Jake B 4 in Astronomy & Space

help!!!!

2007-12-18 11:11:10 · 5 answers · asked by wendy b 1 in Zoology

Which has more mass a Kg of feathers or a Kg of iron?

2007-12-18 11:08:22 · 6 answers · asked by blondie199077 2 in Physics

Need help on this problem

Have to find the measure of the missing side

k=24, l=30, m=15, n=16

i don' get it at all
Can you tell me the answer to this problem?
and show how you did it?
so that i can have a clue on how to do it for allthe other problems similar to this one.
thanks
=]

2007-12-18 11:06:36 · 3 answers · asked by Derp 3 in Mathematics

So, follow the expanding universe back through time and you get to a singular point some 10 - 20 billion years ago. Not very long ago really.

If you keep up on theoretical physics and astronomy you will see that in 100 billion years every star will be so far apart that were you to look up (although the Earth would have died 98 billion years earlier) you wouldn't see a single star. In 100 trillion years everything in existance will cease to exist. There will be no light... only individual protons floating millions of miles apart from one another.

So considering that everything must cease to exist, and assuming that everything has obviously existed forever... What the hell was before the big bang? I don't need string theory or the, "Time didn't start until the big band"... yadda yadda yadda.

Do you think that there have been endless big bangs? If we just exploded one day from something the size of an ink dot could there theoretically be another one tomorrow from a dot by mars?

2007-12-18 11:06:23 · 10 answers · asked by Jake B 4 in Astronomy & Space

i need to find the concentration of NaCO3
what acid should i titrate with?

2007-12-18 11:04:35 · 2 answers · asked by bubblyy 1 in Chemistry

For a physics project.
Any jobs that use a Galilean Telescope?

2007-12-18 11:04:16 · 2 answers · asked by Anonymous in Astronomy & Space

2007-12-18 11:03:03 · 6 answers · asked by howie 1 in Engineering

Assuming the following is a statement,Prove that 1+1=3:

If this sentence is true, then 1+1=3.

2007-12-18 10:56:38 · 1 answers · asked by jinx_0334 2 in Mathematics

3. The star Sorius appears to be about ten times brighter than Deneb. Yet scientists have found that Deneb gives off much more light than Sirius. Why is this?


4. Why is a light year (distance light travels in a year) a useful unit for measuring distance to stars?



at least answering 1 would be helpful, thanks in advance!!!

2007-12-18 10:56:24 · 9 answers · asked by B Y 1 in Astronomy & Space

I personally think the universe is finite, despite the meaning of the the word "universe." Sounded by an infinite empty space in which other possible universes (on our plane, not going into quantum physics). Share your thoughts!

2007-12-18 10:55:17 · 10 answers · asked by Lee C 2 in Astronomy & Space

2007-12-18 10:53:39 · 11 answers · asked by The Only Quest 1 in Parapsychology

In addition to telling the answer, please reveal the step-by-step process you used to get the answer. I'm really trying to learn this, and not just use YA for getting answers.

Thank you.

2007-12-18 10:52:19 · 5 answers · asked by Robert B 3 in Chemistry

characteristics of a liquid

2007-12-18 10:48:52 · 4 answers · asked by Joesie R 1 in Engineering