Science & Mathematics - 17 October 2007

I have a theory that since we are carbon based lifeforms, and since the Earth is one big electromagnetic dynamo, than it may be possible that we can somehow be recorded during our activities in life, and somehow played back as "ghosts". (Similar to a VHS tape) Any comments on this theory?

2007-10-17 22:03:30 · 14 answers · asked by melting_joker 1 in Paranormal Phenomena

A bicycle rider travels 18 miles in the same amount of time that it takes a jogger to travel 10 miles. If the bicyclist goes 9.6 miles per hour faster than the jogger, how fast does each person travel?


show steps so i can understand

2007-10-17 22:01:14 · 9 answers · asked by Anonymous in Mathematics

2007-10-17 22:00:49 · 4 answers · asked by Anonymous in Engineering

The sum of the squares of three consecutive odd integers is 371. Find the integers. Find k so that (3k+1)x squared-(2k-1)x+5=0 has one root equal to 1.

2007-10-17 22:00:06 · 1 answers · asked by Anonymous in Mathematics

Solve the differential equation dy/dx=y^(1/2), y(0)=0, 0<=x<=2 using ode45 and
dfield. What happens if y(0) = epsilon
(a very small number such as 10^(-8) ) is used as the
initial condition? Why? Provide the solution and two plots; one from ode45 and
one from dfield.

2007-10-17 21:55:07 · 1 answers · asked by Max_ccc 2 in Mathematics

I am looking into my Anatomy & Physiology book and when I read I am thorough, my book does not have anywhere in it stating that compact bone is alive. I might have answered my own question. This is not a HW question I am just curious. I will select a five star best answer and please provide sources. no rush like I said this is not HW. Thanks.

2007-10-17 21:53:14 · 3 answers · asked by Kristenite’s Back! 7 in Medicine

2007-10-17 21:48:10 · 2 answers · asked by Ovie 1 in Zoology

The most efficient vacuum that we have ever made on Earth is not nearly as empty as the void of space, apparently.

So just how many atoms are 'floating' around up there in a portion of space? (doesn't have to be a cubic square - whatever is easiest to visualise).

2007-10-17 21:46:29 · 6 answers · asked by Golgi Apparatus 6 in Astronomy & Space

Calculate the heat (calories) produced by the solution of 4.5 g of NaOH. When 4.5g of sodium hydroxide (NaOH) was dissolved in 100g of water and a value of 11.0oC was obtained for ΔT.

2007-10-17 21:40:28 · 5 answers · asked by Anonymous in Chemistry

Determine the gram equivalent weight of nitrogen in each compound.
GEW N in NO.
GEW N in NO2.

2007-10-17 21:30:55 · 1 answers · asked by delkkis 1 in Chemistry

joe has received 11% increase in salary. His new weekly earnings are $222. What was his prrevious weekly salary?

$197.58

2007-10-17 21:25:56 · 11 answers · asked by fana 1 in Mathematics

I'm not talking the matter within it, space itself.

2007-10-17 21:25:36 · 8 answers · asked by mesun1408 6 in Astronomy & Space

just curious ... with dropping lake levels in South Carolina, a lot of them are appearing in the sand and rocky areas on the side above the water line. while there are also a lot of shells and dead ones (shell open and either nothing inside or it is obvious that the tissue inside is dead and starting to decay or be eaten by insects) there also seem some which are intact and otherwise look viable (shell closed, in relatively damp soil which has only been out of water for a few hours to day or two and cooler temperatures)

any chance that these are still alive? I throw them back in just for the fun of it. (don't suggest eating them ... pollution, algea, bacteria aside ... dead or dying shellfish is not worth the risk ...)

2007-10-17 21:20:52 · 1 answers · asked by Anonymous in Zoology

2007-10-17 21:11:49 · 12 answers · asked by Anonymous in Physics

Suppose f has a continuous derivative whose values are given in the following table.

a) Estimate the x-coordinates of critical points of f for 0(less than or equal to) x(less than or equal to)10.

b) For each critical point, indicate if it is a local maximum of f, local minimum, or neither.

x: 0, 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10
f'(x): 5, 2, 1, -2, -5, -3, -1, 2, 3, 1, -1

2007-10-17 21:11:44 · 1 answers · asked by i<3WL 2 in Mathematics

With respect to the origin O, the position vectors of points A, B and C are (2, 3), (4, -2) and (-3, -3) respectively.

(i) A point E (-2, p) is such that 2 |CE| = |AB|. Find the possible values of p.
Ans: - 5 1/2 or -1/2

(ii) Find the coordinates of the point Q if 2 CQ = BA + 1/2 AC.
Ans: (-5 1/4, -2)

Please help by showing workings...Any help will be greatly appreciated!

2007-10-17 21:11:02 · 1 answers · asked by Anonymous in Mathematics

http://zebu.uoregon.edu/1997/images/hubbledeep.jpg

It's called the Hubble Deep Field. It was an image made of a tiny point of sky, that appeared completely black to the naked eye. Using the Hubble Telescope, multiple exposures over many orbits were made, creating this image. Just about every dot, spot, smudge, and hazy patch is a galaxy! To me, the image has implications that are difficult to even express. The phrase 'Worlds without end' never had such a deep meaning to me before. If a tiny pinpoint of sky has THIS, then, spread over the whole sky...it's just unbelievable. I feel something akin to religious awe, though I'm not religious. It's like trying to contemplate forever, like looking Infinity straight in the eye. What do you think?

2007-10-17 21:04:02 · 8 answers · asked by AmigaJoe 3 in Astronomy & Space

and why's it called a funny bone? As its definitly not funny... it really hurts!

2007-10-17 21:00:26 · 8 answers · asked by Anonymous in Biology

sec^2 x as in sec power of 2 x..need to prove it ASAP.And do please provide me with the complete solution,pls..

2007-10-17 20:54:10 · 1 answers · asked by j.anaike 1 in Mathematics

2007-10-17 20:52:43 · 2 answers · asked by Janet B 1 in Earth Sciences & Geology

2007-10-17 20:48:23 · 15 answers · asked by hotcuteluckygal 1 in Biology

How slow would an electron have to be traveling for its wavelength to be at least 1 micro meter???

2007-10-17 20:31:47 · 4 answers · asked by jack86 1 in Physics

how will you test for the presence of this gas?

2007-10-17 20:22:58 · 6 answers · asked by Anonymous in Chemistry

2007-10-17 20:20:02 · 10 answers · asked by lats_j4mote 1 in Zoology

find the corresponding point of the graph of the function y=-8f(x -1)+1

2007-10-17 20:17:00 · 1 answers · asked by Anonymous in Mathematics

I found a snail on the sidewalk during a rainy day. (Today) I put it inside my cousin's drawer. Will it survive inside the drawer if I feed it?

2007-10-17 20:02:15 · 7 answers · asked by Anonymous in Biology

motion

2007-10-17 20:00:21 · 7 answers · asked by surrr 1 in Physics

where do i find coal??? i know u can find it in coal mines and swamp ecosystems but where else?

2007-10-17 19:50:57 · 4 answers · asked by Anonymous in Earth Sciences & Geology

Muslim Fundamentalist or "traditionalist" movements have been growing in popularity and strength in the Middle East and North Africa. What factor's have caused this growth? I'm needing help on this LAST question... Details encouraged :D

2007-10-17 19:50:56 · 5 answers · asked by Anonymous in Geography

A 0.92-g sample of caffeine C8H10N4O2 burns in a constant-volume calorimeter that has a heat capacity of 7.85 kJ/K. The temperature increases from 298.15 K to 303.19 K. What is the molar heat of combustion of caffeine (in kJ).

2007-10-17 19:49:51 · 2 answers · asked by fpsfynest 1 in Chemistry