Science & Mathematics - 25 September 2007

Or ghosts, spirits...

2007-09-25 23:54:56 · 18 answers · asked by Leepal 5 in Paranormal Phenomena

my research studies group have made our own compost using food waste. it is also known as food waste reycling.

the soil which my compost started off with was powdery dry at first (just look like normal soil), then it turned SUPER wet and muddy, and now it is dryer again ._.

QUESTION: WHYYY?

please ans. i would not be able to go on to the next grade if i fail this man.

2007-09-25 23:31:18 · 2 answers · asked by polkastripes 1 in Other - Science

How can one answer this one? Please explain. Thank you!
(log7x)^2 – 3log7x = -2

*the number 7 above is the base

2007-09-25 23:23:15 · 4 answers · asked by _uoa 2 in Mathematics

To find a resistivity of material we are using
p=RA/l (ohm-meter)
p=rho,
R=resistence of material.
l =length of a material
A=cross sectional area of material.

my question is how ohm-meter comes as final answer. because length we can mention as meter, but, cross section area of a round material will be other than meter square.
please advice me how the answer come(ohm-meter) like this.

2007-09-25 23:19:30 · 4 answers · asked by din e 1 in Physics

2007-09-25 23:17:00 · 2 answers · asked by Aris B 1 in Mathematics

I'm struggling getting started with a problem:

for all real number x, [x] is defined as the greatest integer <=x;
i.e. the unique integer such that x-[x] is an element of [0,1)
for example [3.4] = 3 and [-3.4] = -4

let a be an irrational number, and define a real sequence {x_n} by setting

x_n = na-[na]

Prove:
the values of this sequence are distinct irrational numbers in the interval (0,1)

that's where I'm stuck at, I think it has to do with either showing x_n is monotone decreasing, or using the that x-[x] is in [0,1)

2007-09-25 23:02:29 · 3 answers · asked by greeneggs4spam 3 in Mathematics

same mother and father

2007-09-25 23:02:22 · 5 answers · asked by Scorpius59 7 in Medicine

2007-09-25 22:59:07 · 16 answers · asked by Pixie 1 in Paranormal Phenomena

example:
when we donno how it was supposed 2 be..

2007-09-25 22:50:45 · 4 answers · asked by Pwincess FaFa 1 in Mathematics

I'm not really sure how to go about this Physics Problem.

An electrostatic potential has a maximum at point P and a minimum at point M. Are either (or both) of these points equilibrium points for a negative charge? If so are
they stable? What about for a positive charge?

That is all that is stated in the problem.
Thanks

2007-09-25 22:39:15 · 2 answers · asked by Anonymous in Physics

plz. give me three body topic sentense

if possible, give me the three supporting details as well

2007-09-25 22:25:15 · 2 answers · asked by Anonymous in Medicine

2007-09-25 22:17:41 · 5 answers · asked by Anonymous in Engineering

I was browsing you tube and came upon a video titiled: "Very Strange Phenomenon in the Sky." You can view it at "http://www.youtube.com/watch?v=G5VUTNLI4Uo&NR=1". I love weather, especially storms, hurricanes and unusual cloud types. So when I saw this I was stoked. I believe that this type of cloud is a varient of of Lenticular cloud (Altocumulus Lenticularis?). Can you help?

2007-09-25 22:12:08 · 4 answers · asked by Anonymous in Weather

I currently have 3 A-Level ICT teachers, 1 claims that in a few years so many websites will have been created that the world wide web will crash which explains the new www2.example.com but the other says that the world wide web crashing is an imposibility and that certain parts can crash for a short time but the whole thing will never go down.

Does anyone know the truth and have proof or a source of it?

2007-09-25 22:00:04 · 16 answers · asked by Caz 3 in Astronomy & Space

2007-09-25 21:51:49 · 25 answers · asked by martins 2 in Zoology

I am designing electrical pannels for residential buildings and would like to know if there is a program that can help me rearange the power consumption on a 3 phase circut so as not to overload 1 phase and have a high electrical bill.

2007-09-25 21:48:10 · 2 answers · asked by sawayalfred 2 in Engineering

i saw a ring advertised, it said "natural opal from brazil", i asked my jewelers do they know if they come from brazil and they said they are not sure,i really like this ring but the price is a bit high if it isn't a natural opal. I know that they come from Australia and Mexico but i have never heard of them coming from Brazil

2007-09-25 21:46:39 · 3 answers · asked by pussnboots 1 in Earth Sciences & Geology

2007-09-25 21:44:54 · 4 answers · asked by rhubarbcrumble4 2 in Mathematics

[12 25][n1]=[630 ]
[22 48][n2] [1190]

2007-09-25 21:42:14 · 2 answers · asked by Brady F. 1 in Mathematics

Starting with 1, at most how many consecuative positive integers can be added together BEFORE the sum exceeds 200? explain.

2007-09-25 21:24:25 · 5 answers · asked by Anonymous in Mathematics

This question is with refrence to sea water based thermal power plant.

2007-09-25 21:15:09 · 3 answers · asked by deepak_8584 1 in Engineering

wich is more dangerous ?
Australasian funnel-web spider or Black widow ???

2007-09-25 21:00:12 · 4 answers · asked by Anonymous in Biology

...and psychics and clairvoyants please tell me the answer to my question? I don't need to post it here, obviously.

2007-09-25 20:52:22 · 8 answers · asked by tsr21 6 in Parapsychology

do they lay eggs or give birth

2007-09-25 20:33:17 · 10 answers · asked by Anonymous in Zoology

GENERATION AND DEMODULATION OF AN AMPLITUDE SHIFT KEYED (ASK) SIGNAL

2007-09-25 20:27:37 · 1 answers · asked by lan 1 in Engineering

2007-09-25 20:08:14 · 12 answers · asked by asgoo a 1 in Physics

Show that the triangle with the vertices A(6,-7),B(11,-3) &C(2,-2) is a right triangle by using the converse of the Pythagorean Theorem. Find the area of the triangle.

2007-09-25 19:53:22 · 6 answers · asked by monica 1 in Mathematics

less than, greater than, or the same as its potential energy at that point?

2007-09-25 19:31:55 · 8 answers · asked by AnonymousOne 2 in Physics

2007-09-25 19:29:24 · 6 answers · asked by dazed and confused 2 in Geography

2007-09-25 19:19:43 · 13 answers · asked by mztana820 1 in Mathematics