Science & Mathematics - 8 November 2007

what is the job called that gets finger printa or hairs and matches it to the correct identity or works for detectives in a science lab? I think its called forensic scientist not sure but what do you do to get into it what college in california?

2007-11-08 09:03:00 · 5 answers · asked by Anonymous in Other - Science

Like if it was close enough to the sun to have a tail; wouldn't that be an awesome light show from the surface... Maybe it could happen in another solar system, like around one of those super Earths.

2007-11-08 09:02:11 · 10 answers · asked by the boy from tortuga 4 in Astronomy & Space

What is PAPER CLIP, ELECTRICAL WIRE, SPOON, SAFETY PIN AND KITCHEN FOILS made out of?

3 choices for each is Steel (iron), alluminium and copper.
Please? help me.

2007-11-08 09:01:40 · 9 answers · asked by Anonymous in Engineering

2007-11-08 09:00:43 · 4 answers · asked by Anonymous in Astronomy & Space

A simple pendulum, consists of an object suspended by a string. The object is assumed to be a particle. The string, with its top end fixed, has negligible mass and does not stretch. In the absence of air friction, the system oscillates by swinging back and forth in a vertical plane. If the string is 1.60 m long and makes an initial angle of 34.5° with the vertical, calculate the speed of the particle at the following positions.
(a) at the lowest point in its trajectory
m/s
(b) when the angle is 15.0°
m/s

2007-11-08 08:57:32 · 3 answers · asked by tuerving 2 in Physics

(ie. Lightning storms are like batteries because......)

2007-11-08 08:55:12 · 5 answers · asked by AirGear/GSD Fan 1 in Weather

I'm sure you've heard stories about dolphins saving people from drowning and shark attacks....
What is it that makes dolphins, unlike other sea creatures, sympathize with humans?

2007-11-08 08:51:44 · 8 answers · asked by Anonymous in Zoology

I need to do a Scientific Visualization report. I have decided to do a topic in Astornomy. I need a topic.

The topic should be on a higher education level. Something that will really give me a challange. Something dealing with oue solar system.

2007-11-08 08:51:26 · 9 answers · asked by Coach K 4 in Astronomy & Space

Does that mean that we are bacically in the center of the universe?

2007-11-08 08:51:21 · 8 answers · asked by mark r 2 in Astronomy & Space

X (a random variable) has a double exponential distribution with parameter p>0 if its density is:

f_X(x) = 1/2 * e^(-p*|x|) for all x.

Prove that the variance of X = 2/(p^2).

I guess I'm having trouble performing the integration. If anyone could show how to do it step by step, it would be very helpful:

2007-11-08 08:44:05 · 1 answers · asked by cornzxo 1 in Mathematics

how would we live without the animals of the world?

2007-11-08 08:42:51 · 3 answers · asked by alysa531 1 in Zoology

x^x^x^...=2
asumming that this is possible.

(it means x to the x to the x to infinity equals 2)

i think x will have to include sq. rt. of 2 and infinity or something. However i know that it isnt sq. rt. of 2 to infinity power. I think...

plz show work. Thanks.

2007-11-08 08:42:39 · 4 answers · asked by ahhhh? 1 in Mathematics

"the earth orbits the sun once per year at the distance of 1.50x10^11m. venus orbits the sun at a distance of 1.08x10^11m. these distances are between the centres of the planet and the sun. how long (in earth days) foes it take for venus to make one orbit arounf the sun?" (please can you work this out using equations not jus searching the answer in google etc. thank you) thnx for your help

2007-11-08 08:42:29 · 2 answers · asked by dilo247 1 in Physics

2007-11-08 08:39:49 · 10 answers · asked by Jeff E 1 in Biology

A block hangs in equilibrium from a vertical spring. When a second identical block is added, the original block sags by 3.00 cm. What is the oscillation frequency of the two-block system?

2007-11-08 08:39:27 · 1 answers · asked by rochesmk 2 in Physics

Assuming a space ship designed in a circular fashion with a diameter equal to one kilometer. If the ship has a translational motion and a circular motion in space making one revolution around itself in a minute (1rpm). The outward surface would be traveling at Dpi every minute or 3.14 kilometers/min or (52 m/s.) Now if we extend the radius of the space ship 1000 times making the diameter to be 1000 kilometers, then the outward surface of the ship would travel 52 kilometers/second.

If the need arose as we progress in our technology through the years assuming that nuclear energy is used to power the ship and at a certain stage we decided to enlarge that ship's diameter 10,000 times its previous dimensions. At this point we would have the outward surface travel at a speed = 520,000 k/s, while the speed at 500 meters from the center of the ship travels only at 52 m/s. what are the possibilities to extend that outward surface to make it travels beyond the speed of light? And what would prevent us to make the ship rotates at that speed?

2007-11-08 08:38:05 · 1 answers · asked by lonelyspirit 5 in Physics

6,000 BTUs is equal to how many watts?
1 BTU is equal to how many watts?

2007-11-08 08:35:25 · 6 answers · asked by klg1128 1 in Engineering

2007-11-08 08:33:30 · 3 answers · asked by chloe 1 in Biology

I'm researching albert einstein and i need to know this answer.

2007-11-08 08:32:59 · 3 answers · asked by AR2daHizzay 1 in Mathematics

I hope somebody can help me with this. I've been trying to find out for a while now how many miles of border does Georgia share with each of the States that border it....does anyone know the answer or does anyone know where I can look it up online?

2007-11-08 08:32:53 · 1 answers · asked by Reb 2 in Geography

i want to plant some trees....what are the fastest growing shade trees? fastest flowering trees? (i'm in VA.)

2007-11-08 08:30:06 · 3 answers · asked by kbenson55 4 in Botany

Do you think that various scientific principles are violated and even downgraded by the official 'explanation' of the tragic events of 9/11/2001 ? For example, in matters such as planes entering steel framed buildings, tower collapses, the apparent speeds of planes at low altitude, etc etc. ? That we have been, in fact, presiding over Mickey Mouse style 'explanations' which have undermined real respect for scientific principles ?

2007-11-08 08:27:20 · 7 answers · asked by democracynow 2 in Engineering

Then how do I use a geometric formula to evaluate the integral (a>0, r>0)?

2007-11-08 08:27:03 · 2 answers · asked by Anonymous in Mathematics

Show Work!
1. If x^2 + y^2 = 25, what is the value of d^2y/dx^2 at the point (4, 3)?

2. f(x) = ln|x^2-1|, then f' (x) = ?

2007-11-08 08:22:04 · 2 answers · asked by CG 1 in Mathematics

Make x the subject of the formulae:
1.) a/b-x =c
2.) a=b(1-x)

2007-11-08 08:21:02 · 3 answers · asked by Anonymous in Mathematics

( 7Σk=1 of k)^2 - Σ of (k^3/4) ?

2007-11-08 08:18:48 · 2 answers · asked by Anonymous in Mathematics

We just finished dealing with intrermolecular/interionic attractive forces so I'm guessing it has a lot to do with those. Thanks!

2007-11-08 08:14:52 · 1 answers · asked by Anonymous in Chemistry

We have the function f(x) = (2 x^2 - x +10)^sin(x). Use logarithmic differentiation to find f'(x).

f('1) =

I keep getting 10.32 as an answer, but apparently, it's wrong.

2007-11-08 08:13:48 · 6 answers · asked by sxysweet619 2 in Mathematics

how do scientists determine each layer of the earth

2007-11-08 08:11:46 · 3 answers · asked by Todd F 1 in Astronomy & Space

Are the Global Warming Fanatics and the Evolutionists one and the same?
If so then that explains allot.

2007-11-08 08:10:00 · 13 answers · asked by Adelaide B 5 in Earth Sciences & Geology