Science & Mathematics - 15 September 2006

info on rocks,types of rocks,rock which is naturally occuring substance.

2006-09-15 04:49:18 · 15 answers · asked by chirag_vora36 1 in Physics

2006-09-15 04:47:05 · 16 answers · asked by michal d 2 in Biology

What kind of insect while moving resembles a fish swimming? i.e. they "wiggle" their body while moving similar to how a fish looks by moving their fins back and forth to move. They are only maybe 1/4 inch long, and are grayish in color.

2006-09-15 04:44:34 · 5 answers · asked by tag 1 in Zoology

Would you mind to post it?

2006-09-15 04:42:42 · 5 answers · asked by CHESSLARUS 7 in Mathematics

wich method use for gold refine (pure gold) ?

2006-09-15 04:33:38 · 9 answers · asked by business tycoon 1 in Chemistry

Black hole collisions , hypernovas , quasars emit tremendous energy in the universe , but what is the greatest source of energy in the universe?

2006-09-15 04:33:23 · 16 answers · asked by venkat Subramaniam 2 in Astronomy & Space

2006-09-15 04:29:16 · 43 answers · asked by aonnoy_sengupta2000 1 in Weather

2006-09-15 04:27:51 · 8 answers · asked by confused 1 in Mathematics

These aren't my homework questions, they're what I need to know to do my homework questions:

Given a Weibull distribution with parameters a and Lambda, how do you find the median and percentiles?

Given n trials of that same distribution, how do you find expectation and variance of a certain X value (like, the number of trials in the n that are above X)?

Given a beta distribution with parameters a and b, how do you find the state space of the distribution, as well as overall expectation and variance and P(X<=Y) for some value X and Y?

In my previous stats class we only did normal distributions, so I'm a bit lost when it comes to these Weibull and Beta distributions.

2006-09-15 04:27:08 · 3 answers · asked by Anonymous 3 in Mathematics

it have to go 50 feet. it can't have additional force other than gravity and wind.

2006-09-15 04:25:23 · 8 answers · asked by Alisha B 1 in Engineering

I have interest in electronics, i want to learn how to design a practical electronic circuit.can you advise any good book for beginers.i have basic theoretical knowledge of electronic hardware.

2006-09-15 04:21:08 · 6 answers · asked by harvinderdevgan 1 in Engineering

|2x + a| = |x| - a , a>0

Please solve the above linear equation in order to find x. Please show me the steps that u have to follow to solve it so that i can understand such questions better. Thanks a lot for ur help!

2006-09-15 04:19:58 · 5 answers · asked by mad_integer 3 in Mathematics

Yahoo! Answers staff note: This is an official Yahoo! Answers Brain Bus question. Look here for more details:

http://uk.blog.360.yahoo.com/y_answrs_team_uk

2006-09-15 04:18:41 · 17 answers · asked by y_answrs_brainbus 3 in Chemistry

which is more stable???Mn3+ or Mn2+???give explaination considering electron configuration for both ions...

2006-09-15 04:17:33 · 7 answers · asked by pdforta 2 in Chemistry

2006-09-15 04:16:13 · 28 answers · asked by jessica_warren_uk 2 in Zoology

something like this http://eor.rulesthe.net/chainmail/pics/Pursesidesmall.jpg or this http://www.spiderchain.com/images/archive/misc/bag_dice_large.jpg

would aluminum, steel, iron, silver, nickel, copper, and/or a combination of these all work (or not, as the case may be)? do they have specific frequencies from which they'll shield, or are all proper faraday cages EMF free?

would it need to be entirely closed (net-like bag cinched, purse flap folded over into closed position), or would a five sided cube work (like a bottomless chicken wire cage i can slip over my computer monitor) ?

2006-09-15 04:15:30 · 3 answers · asked by altgrave 4 in Physics

2006-09-15 04:13:48 · 21 answers · asked by Anonymous in Biology

2006-09-15 04:12:08 · 13 answers · asked by bprice215 5 in Weather

I am doing a project for my Tech Ed. class and i need to know the differences between old and new mufflers. PLEASE HELP!!!!

2006-09-15 04:11:58 · 4 answers · asked by Anonymous in Other - Science

I need to understand this concept in my Biology.

2006-09-15 04:08:05 · 4 answers · asked by ♥ 2 in Other - Science

2006-09-15 04:03:52 · 3 answers · asked by prasanth e 1 in Engineering

It seems like there would be a big mess! Did it get dust in the LEM?

2006-09-15 04:03:05 · 5 answers · asked by presidentrichardnixon 3 in Astronomy & Space

2006-09-15 03:58:42 · 5 answers · asked by yuk_shn 1 in Astronomy & Space

Solve each of the following inequalities:
(a) (16-x^2)/(x^2-9)>=0
and
(b) (x^2-9)*(x^2-16)<=0

2006-09-15 03:58:42 · 10 answers · asked by Lori B 1 in Mathematics

2006-09-15 03:57:24 · 14 answers · asked by alfromponty 1 in Physics

For example, one that I could buy in a science store.

2006-09-15 03:57:20 · 4 answers · asked by presidentrichardnixon 3 in Astronomy & Space

2006-09-15 03:56:17 · 13 answers · asked by Anonymous in Astronomy & Space

I know this is a really dumb question but I need help. I have a total amount of $418.91 which includes a 6% sales tax. I need to figure out the original amount before the 6% sales tax was added. I am sure it is a simple answer but I am baffled at the moment. Thank you.

2006-09-15 03:49:34 · 10 answers · asked by Anonymous in Mathematics

does anyone know any good moon tracking websites!!!!!????(for the united states)

2006-09-15 03:47:35 · 2 answers · asked by imsoCOOL_bejealous 2 in Astronomy & Space

the equation for natural frequency is f=(1/2pi)*sqrt(k/m) correct? Is that given for 1 inch of spring travel? Does that mean if I change the spring rate the frequency will not change because the spring will just travel a different distance? Is there an equation that includes distance traveled?

2006-09-15 03:45:55 · 2 answers · asked by tlow 1 in Physics