Science & Mathematics - 21 November 2007

Please answer seriously and with SCIENTIFIC PROOF.
Is it TRUE that earth is compressing from north and south poles, becoming like horizontal EIGHT; due to some effect by OZONE LAYER? Is it true that IT IS NO LONGER CORRECT THAT "EARTH IS ROUND, A BALL, LIKE AN OSTRICH's EGG?"

2007-11-21 08:23:42 · 5 answers · asked by eternal c 1 in Astronomy & Space

anyone know any documentries on different dimensions

2007-11-21 08:20:12 · 6 answers · asked by Anonymous in Astronomy & Space

The internal energy change is 4:11 kJ when
an ideal gas expands from 3.50 to 28 liters
at a constant external pressure of 2:95 atm.
What is the heat absorbed by the gas from its
surroundings? Answer in units of kJ.

2007-11-21 08:12:47 · 1 answers · asked by rachlopez88 1 in Chemistry

When 0.404 g of compound X is burned com-
pletely in a bomb calorimeter containing 3000
g of water, a temperature rise of 0.428 C is
observed. What is delta(U) for the combustion
of compound X? The hardware component of
the calorimeter has a heat capacity of 3.54
kJ/C. The specific heat of water is 4.184
J/g*C, and the MW of X is 56.0 g/mol. An-
swer in units of kJ=mol.

2007-11-21 08:12:12 · 1 answers · asked by rachlopez88 1 in Engineering

6x-4y=8
9x+5y=23
and
4x+3y=78
9x+20y=96

2007-11-21 08:12:01 · 5 answers · asked by Kelly C 1 in Mathematics

I remember working at my uncles shop ( as an electronics technician ) for a year around 8 years ago

these were my job duties

I had to read and interpret mechanical, optical, and electrical specifications.I used multi-meters, digital oscilloscopes, DVM and function generators
I tested analog and digital circuits and generated test reports in MS Word, MS Excel and MS PowerPoint.

These are the job descriptions that I could put in words.
But i can't remember why i was testing , reading and measuring all these voltages and so on and so forth .

I dn't know if he was an evil genius working on world domination or if he was working on a project that relates to world domination ?

the bad thing is that i need to add this to my resume ,and i wanna write what was it that i was working "ON" .

what do you think , in your mind , was I working on ?
any help would make me glad .
Thanks.

2007-11-21 08:10:52 · 8 answers · asked by sum142121 1 in Engineering

2007-11-21 08:05:46 · 7 answers · asked by Anonymous in Mathematics

(2X / X+3) + (3 / X-3) = 8 / X^2 -9

2007-11-21 08:05:34 · 5 answers · asked by D*Star 1 in Mathematics

is it inorganic,hydrophilic, hydrocarbons, or organic?

2007-11-21 08:02:19 · 5 answers · asked by daphne 1 in Biology

2007-11-21 08:00:05 · 9 answers · asked by smileyD 1 in Mathematics

2007-11-21 07:56:23 · 3 answers · asked by keenannmarie 1 in Astronomy & Space

2007-11-21 07:54:17 · 17 answers · asked by ljhyatt 1 in Mathematics

I mean if every star is gonna grow up like the sun did..then is that the casue of global warning? well..is it goona effect Earth?

2007-11-21 07:53:10 · 17 answers · asked by Kelly X 1 in Astronomy & Space

Find the values of x and y that solve the following system of equations:

- 8x - 3y = 14
- 3x - 7y = 17

Thanks!

2007-11-21 07:49:48 · 3 answers · asked by shauna s 1 in Mathematics

please help!!!

6=9-(4x-11) x=???

2007-11-21 07:43:18 · 9 answers · asked by Anonymous in Mathematics

please tell me the measurement it is in and how much is it

2007-11-21 07:39:19 · 6 answers · asked by Say Vut! 2 in Physics

r(t) = (1+t)i + (t^2 -2t)j

2007-11-21 07:38:11 · 3 answers · asked by Anonymous in Mathematics

Ive been trying forever and I cant get the answer. If anyone knows how to work this out, please feel free to help out. Also, Please explain how you did it so can understand how to do it. Thanks!

If Jack and Jill each flip a coin three times, what is the probability they will get the same number of heads?

2007-11-21 07:37:58 · 3 answers · asked by Richard 1 in Mathematics

The blocks are so big even todays technology could not move them. How could this be?

2007-11-21 07:35:32 · 5 answers · asked by Anonymous in Engineering

2007-11-21 07:34:16 · 4 answers · asked by super_man 3 in Astronomy & Space

2007-11-21 07:34:00 · 5 answers · asked by D*Star 1 in Mathematics

how do i prove this
2 cos^2 A - 1 = cos(2A)


using complex numbers where
cos A = ( e^-iA + e^iA ) / 2

and

sin A = ( e^iA - e^-iA ) / 2i


plz help

2007-11-21 07:33:54 · 2 answers · asked by leyzeebum 1 in Mathematics

Can Someone please show me how to do this problem??? THANKS!!!!

2007-11-21 07:33:36 · 1 answers · asked by Anonymous in Chemistry

In celebration of my reaching level 5 (for mostly math answers), i thought I'd post this fun word problem to challenge everyone:
Can you solve for each letter. Each letter has a different value (0 through 9). All of the same letter (IE all "R" letters) have the same numeric value.

. C R O S S <-- the dot is to try make the lines straight
+ R O A D S
-----------------
D A N G E R

Yahoo answers formatting is a little quirky, so working backwards the single units are S, S R, the "tens" units are S, D, E, the hundreds units are O, A, G, .. etc etc

2007-11-21 07:32:54 · 2 answers · asked by David F 5 in Mathematics

what are the real and imaginary part of ie^(i theta)??

2007-11-21 07:26:25 · 5 answers · asked by leyzeebum 1 in Mathematics

Hi, Im doing my IGCSE design project ( electronics ) and im trying to make a mat which can be placed behind a radiator and will turn that heat into electricity, a) to reduce heat loss through the wall, and b) to save electricity and create some at the same time.

Unfortunatly I have no idea what to use in the mat to turn the heat into electricity. I've been researching Thermocouples ( http://www.rvmobile.com/TECH/TROUBLE/Tcouple.htm ) but i've no idea how much they are and how how small. Does anyone have any idea about what I could use in the mat. ( plaese dont make it a expensive idea, this is just a project. )
Thanks

2007-11-21 07:21:14 · 3 answers · asked by daniel 1 in Other - Science

60 g of ice and 70 g of water are at equilibrium in an insulated container. 42 kJ of heat are delivered to this mixture via an electric heater. What is the final temperature of water in the container? Answer in C.

2007-11-21 07:18:34 · 2 answers · asked by beehappinow 1 in Chemistry

2007-11-21 07:18:13 · 32 answers · asked by aubrey 1 in Mathematics

a valuable collection of coins contained old nickels, dimes, quarters, and pennies. The face value of the pennies was $8. There were seven more than three times as many quarters as dimes and sixteen less than twice as many nickels as quarters. If the face value of the entire collection was $38.40, how many of each kind of coin was there?

2007-11-21 07:11:42 · 4 answers · asked by Anonymous in Mathematics

please help, i understand that as pH increses the [H+] decreases, can anyone giv eme detailed answer to mek me undertand?????

2007-11-21 07:11:06 · 4 answers · asked by Anonymous in Chemistry