Science & Mathematics - 15 August 2007

d^2y/dt^2 - dy/dt - 2y = 0

2007-08-15 04:20:05 · 5 answers · asked by Amrinder J 1 in Mathematics

2007-08-15 04:17:43 · 4 answers · asked by mansur e 1 in Mathematics

I am sitting here down loading photos of Quartz Druzy from Indonesia. I had a geologist tell me the fossil coral is 25 million years old but how about this micro-crystal quartz druzy. They are quite beautiful.

2007-08-15 04:11:43 · 1 answers · asked by ELF Earth Life Form - Aubrey 4 in Earth Sciences & Geology

1)

x^2 - 5x + 6
over
x^2 + x - 6

2)

x^2 - 9x + 20
over
25 -x^2

With solution please. And explanation.
please help me I really need some teaching help.

2007-08-15 04:11:16 · 6 answers · asked by MarkAngelo 2 in Mathematics

As we lift a mass from the earth, it gains potential energy,; does its mass then increase; is that where the added potential energy is 'stored"

2007-08-15 04:04:43 · 7 answers · asked by modah 1 in Physics

I can't find the freezing point for oil. Could someone help me. I'am looking for what temperature hair oil would freeze in. I'am just trying a wacky experiment :-D .

2007-08-15 04:01:35 · 4 answers · asked by smarty#1 2 in Chemistry

I desperately want to know if there are any other animals that can survive longer than camels without water...

2007-08-15 03:55:40 · 5 answers · asked by DinoFear 1 in Zoology

hi guys, i just want to ask opinions/suggestions on what project should we make, related to mechanical engineering. It could be re-engineering, modifications to present etc, to solve certain problems encountered by normal people. i just need help, badly. Thanx alot.

2007-08-15 03:54:06 · 2 answers · asked by perry 1 in Engineering

A new grill has a mass of 30.0 kg. You put 3.0 kg of charcoal in it. You burn all of it and the grill has a mass of 30.0 kg. What is the mass of the gases given off?

Answer with work, if possible.

2007-08-15 03:51:43 · 7 answers · asked by aaadaj 1 in Chemistry

Its black but I want it another color

2007-08-15 03:49:22 · 3 answers · asked by riserricky 2 in Astronomy & Space

Rocks I'm guessing, and how deep would we have to dig ?

2007-08-15 03:48:15 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2007-08-15 03:45:50 · 5 answers · asked by bluemoonfarm90 2 in Mathematics

in the book the 'da vinci code' it is said so.But the first two numbers of the sequece 1-1-2-3-5-8-13-21 doesn't give the no. 1.618 when divided. Y is it so?

2007-08-15 03:43:03 · 7 answers · asked by Anonymous in Mathematics

2007-08-15 03:41:59 · 5 answers · asked by tigger 1 in Geography

An Ant 2 cm long has a mass of .0003 kg and can lift 10 times its mass, in addition to the mass of its own body (it can lift a total of .0033kg)

A. If the ant were 100 times as large, how long would it be? Show calculations.

B. What would the mass of the giant ant be? Show calculations.

C. How much could the giant ant lift in kilograms? Show calculations.

2007-08-15 03:41:24 · 4 answers · asked by lala 2 in Physics

Please help! Need to write the reaction between m-nitroaniline and HCl.

Thank you!!!

2007-08-15 03:38:32 · 7 answers · asked by miledi111 1 in Chemistry

As we know that, there are more and more trees are being destroyed on earth. What's your opinion in protecting trees? What do you think we can do to protect those trees?

2007-08-15 03:37:45 · 6 answers · asked by meiling_7 1 in Earth Sciences & Geology

Take this prime example..the now EX governor of Arizona now admit seeing the UFO associated with the phoenix lights..it should be noted for you idiots..the lights broadcast to the media WHERE flares, in fact they where put up deliberatly to confuse the issue..the REAL sighting was a HUGE black SILENT triangle
that was witnessed by many people, including the Fife Simington. It was a SOLID object not just a bunch of lights as confirmed-
"Symington says he saw a large triangular “craft of unknown origin” with lights, moving slowly. “It was dramatic. And it couldn’t have been flares because it was too symmetrical,” he says. “It had a geometric outline, a constant shape.” "

More here:
http://www.fifesymington.com/thelights.html

Now..he kept the 'secret' for 10 years and he's not even in the military in which they have 'compartmentalization' of secrets so no 1 person 'knows it all'.
Its a fact of top secret work from the stealth projects to even higher classified ones. Live with it.

2007-08-15 03:35:20 · 13 answers · asked by █ORal-K 2 in Astronomy & Space

Are they of any help. Please serious and factual answers only. I have a bad osteoarthritis knee and want to share your experience. Please e-mail me so that I can contact you.

2007-08-15 03:30:28 · 2 answers · asked by fernando_007 6 in Medicine

What is the square root of..
0000000001100100 * (0000000001100100 / 0000000000001010) answer to 13 decimal places

2007-08-15 03:21:51 · 11 answers · asked by Anonymous in Mathematics

I have been bedridden for seventeen years. Even though I'm a doctor there's nothing further that can be done for my condition. this past year my health has really taken a downwards spiral. I'm tired of fighting the battle of living each day. The challenges are becoming too much for me. I would appreciate any thoughts anyone has on this. I really don't know what to ask.

2007-08-15 03:17:00 · 8 answers · asked by Cherokee Billie 7 in Medicine

This is a pseudo-fictional scenario, we suppose telepaths exist and that governments keep them secret.
Why?

2007-08-15 03:14:46 · 9 answers · asked by JarJar Odd 2 in Paranormal Phenomena

I have a test tommorow but I don't have an idea what are the 3 isotopes of hydrogen and how will i get the mass number, number of proton, number of neutrons, number of electron, and the atomic number of it. My test is like a chart, it is like a "fill in the blanks" chart. Please answer my question now please! I hopoe you can answer me fast ... THANKS !!!

2007-08-15 03:12:34 · 8 answers · asked by Anonymous in Chemistry

Suppose you have a helium balloon. After having it for a while it will deflate. Where does that helium go without a hole in the balloon?

2007-08-15 03:07:30 · 5 answers · asked by <3 5 in Other - Science

basic principle

2007-08-15 02:54:28 · 2 answers · asked by quick and clever 1 in Engineering

Part 1: Suppose that the number of new homes built, H, in a city over a period of time, t, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of homes built can be modeled by an exponential function, H= p * a^t , where p is the number of new homes built in the first year recorded. If you were a homebuilder looking for work, would you prefer that the value of a to be between 0 and 1 or larger than 1? Explain your reasoning.


Type formula above as H = p * a^t

2007-08-15 02:49:55 · 5 answers · asked by DEE H 1 in Mathematics

2007-08-15 02:47:55 · 4 answers · asked by Anonymous in Astronomy & Space

2007-08-15 02:43:02 · 28 answers · asked by Anonymous in Biology

A.) a star-like appearance and large spectral red shift
B.) star-like appearance and large spectral blue shift
C.) star-like appearance and bright radio source
D.) star-like appearance, bright radio source, and large spectral red shift.

2007-08-15 02:42:23 · 2 answers · asked by Kare Bear 5 in Astronomy & Space

2007-08-15 02:35:58 · 5 answers · asked by sadam 1 in Physics