Science & Mathematics - 29 January 2007

What area would provide the best chance to find a good job? Make the most money? Travel the world?

2007-01-29 14:55:13 · 12 answers · asked by Andrew G 2 in Engineering

2007-01-29 14:54:32 · 1 answers · asked by ixchel 1 in Engineering

I can't recall...it's not commutative - it's, its.. ???

2007-01-29 14:54:04 · 8 answers · asked by HomeSweetSiliconValley 4 in Mathematics

I have to build a popsicle bridge for school. It will be tested by hanging a hook with a bucket and filling the bucket with bricks or some other weight. I was wondering if a truss box kinda shaped or an arch would be stronger. Please let me know ASAP.

2007-01-29 14:53:59 · 4 answers · asked by i_need_answers 1 in Engineering

A phychic told a friend of mine that she had come from the planet Zircon in her past life. I have never heard of such a planet.

2007-01-29 14:52:44 · 21 answers · asked by Olga D 1 in Paranormal Phenomena

what is 13 to the 2nd Power? what did you do to get that answer??

2007-01-29 14:51:55 · 16 answers · asked by panseyparkinson2266 2 in Mathematics

2007-01-29 14:49:17 · 4 answers · asked by soundprovider 1 in Chemistry

Staying on the animal theme, a tourist visits the zoo, and is interested in knowing how many birds and lions are on display. The Zookeeper tells him that between birds and lions there are 30 heads and 100 feet. From this information, can you tell how many birds and lions there are? If so, how many birds and lions are in this zoo?

2007-01-29 14:48:26 · 6 answers · asked by Sexy diva 1 in Mathematics

i have to do a project and idk want to make as the stomach. it have to be 3-D life HELP ME!!!!

2007-01-29 14:47:39 · 4 answers · asked by Anonymous in Botany

I want to be a structural engineer but I hate to work outside,I want to work in an office with air conditionated.

2007-01-29 14:45:43 · 4 answers · asked by The Apostle 2 in Engineering

I need to figure out the values of "p" for which the following series is convergent:

Sum from n=1 to infinity of
(ln n)/(n^p)

I'm thinking that it's a variation of the p series (1/n^p), but I can't figure out how to manipulate it into a form that looks like the p series.

2007-01-29 14:45:00 · 3 answers · asked by Jacqueline Sherry 1 in Mathematics

it weighs 265 N. When it is immersed inoil,it weighs 269 N. Find:
A. the density of the object
B.the density of the oil

I need to know how you did this because it is a example for my test tomorrow! another problem just like this will be used but of course with different numbers! Thanks!

2007-01-29 14:44:17 · 2 answers · asked by NoturTypicalBI! 3 in Physics

2007-01-29 14:43:20 · 4 answers · asked by Prem 1 in Botany

2007-01-29 14:42:27 · 10 answers · asked by Prem 1 in Botany

2007-01-29 14:42:06 · 2 answers · asked by Prem 1 in Botany

2007-01-29 14:41:59 · 5 answers · asked by :] 3 in Geography

Potassium iodide + lead (II) nitrate --> lead (II) iodide + potassium nitrate

Magnesium chloride + amonium nitrate --> magnesium nitrate + ammonium chloride

Thanks in advance!!

2007-01-29 14:41:34 · 1 answers · asked by SUnny S 1 in Chemistry

For reptiles to evolve into birds? Did birds evolve into humans, or did reptiles evolve into humans? How long did it take for humans to appear from reptiles or birds?

2007-01-29 14:40:37 · 4 answers · asked by lirael1019 1 in Biology

Spec required for floating global bid. Tried worldpumps.com, but no success hence the request.

2007-01-29 14:39:09 · 1 answers · asked by sarma k 1 in Engineering

2007-01-29 14:37:45 · 3 answers · asked by Anonymous in Geography

A. What is the magnitude of the boyant force acting upon it?
B. What is the apparent weight of the steel once submerged in water ( D=9000 kg/m^3)
I need to know how you did this because it is a example for my test tomorrow! another problem just like this will be used but of course with different numbers! Thanks!

2007-01-29 14:37:39 · 1 answers · asked by NoturTypicalBI! 3 in Physics

Heres the question: can a gene, be it one that causes a character trait or defect, die out? Or does it just become too recesive to be traced? With such a long history of humanity, I would think that some genes would have to die out and not be passed on to offspring. Please give a somewhat scientific answer, not just a "yes" or "no". Thanks in advance!

2007-01-29 14:36:28 · 6 answers · asked by Theredhairball 1 in Biology

2007-01-29 14:36:24 · 14 answers · asked by redtrixie5 1 in Geography

i'm doing an article for my school news paper about the show 'Armed & Famous' and how it got cancelled. what should I call it?

2007-01-29 14:34:57 · 3 answers · asked by deegreat:) 2 in Physics

Having trouble with a homework question.....The chapter is about laplace transforms. But i'm given a picture....i wrote it out below...and have to express it in the t-domain (also in the s....but am only worrying if i got the t-domain right for now)

Left column is going to be f(t)...right is going to the the range of t's.
f(t) t
1 1 t -1 2 1 3 6-t 5 0 6 < t

This is the part i'm confused if i did correctly...written as u(t)

F(t) = u(t-1)- (t-1) u(t-2) - u(t-3) - (6-t) u(t-5) - u(t-6)


if anyone could verify that....this is the example problem that was given...expected to learn this from the book.

0 t<0
1/h 0 0 t>h
..the answer is then
f(t) = 1/h [u(t) - u(t-h)]

thanks in advance.

2007-01-29 14:34:57 · 1 answers · asked by My name is not bruce 7 in Mathematics

A water main for a street is being laid using a particular kind of pipe that comes in either 18-foot sections or 20-foot sections. The designer has determined that the water main would require 14 fewer sections of 20-foot pipe than if 18-foot sections were used. Find the total length of the water main.

Thanks in advance. Please show work

2007-01-29 14:33:48 · 7 answers · asked by Anonymous in Mathematics

2007-01-29 14:32:31 · 1 answers · asked by delphina0723 3 in Biology

A certain type of gutter comes in 6-foot, 8-foot, and 10-foot sections. How many different lengths can be formed using three sections of gutter?

Thank you in advance and please show work.

2007-01-29 14:31:20 · 3 answers · asked by Anonymous in Mathematics

A car accelerates from 0mph to 35 mph. Its velocity at time t is v(t)=5t mph where t is in seconds. Use an integral to find the total distance in miles it travels during its acceleration. (Hint: work with seconds not hours.) The answer is in seconds per hour

2007-01-29 14:30:03 · 1 answers · asked by crzylaker 2 in Mathematics

Several pairs of structures are given. In each case, choose the one that meets the condition given first.

Distal-the knee/the foot,

Lateral- the cheekbone/the nose,
Superior-the neck/the chin,

Anterior-the heel/the toenails,

External-the skin-the skeletal

It would be greatly appreciated for anyone who can answer this! Thank you!

2007-01-29 14:28:37 · 5 answers · asked by Anonymous in Medicine