Science & Mathematics - 2 October 2006

2006-10-02 04:48:05 · 4 answers · asked by Anonymous in Mathematics

Were the Mayans right?

2006-10-02 04:44:56 · 11 answers · asked by jit bag 4 in Other - Science

2006-10-02 04:43:27 · 9 answers · asked by care bear 1 in Biology

2006-10-02 04:43:22 · 13 answers · asked by Anonymous in Astronomy & Space

I need help on this:
The Laplace equation for electrostatics is 2V=0. This is easily solved for simple cases such as the parallel plate capacitor. For more involved situations, numerical methods are usually required. To give you some insight into numerical solutions, lets use a spreadsheet (such as Excel) to solve the Laplace equation in cartesian coordinates.

For the voltage, Vi at the point xi, a simple approximation for the derivative is

and the second derivative is obtained from the first as

(i) Take the case of a parallel plate capacitor with 5V across it. Set up a spreadsheet to solve for the voltage from the grounded plate to the 5V plate. Plot V versus x to ensure the solution is correct.

(ii) Extending this to 2 dimensions (x,y) and setting Δx=Δy=h then

Using the spreadsheet, compute the voltage inside a long conducting box (in the z direction) with square cross section (in the x-y plane) that has one side at 5V and the rest at zero volts.

2006-10-02 04:41:17 · 1 answers · asked by bye_1981 1 in Physics

I can imagine where iron and copper were used. But I have little idea about where zinc and lead were used.

2006-10-02 04:38:15 · 2 answers · asked by coolrickymartin 1 in Chemistry

2006-10-02 04:37:23 · 3 answers · asked by Jesus Petrucci 2 in Chemistry

2006-10-02 04:30:52 · 7 answers · asked by deepak57 7 in Mathematics

I dont even know what kinda satellite this is!

2006-10-02 04:30:40 · 8 answers · asked by wildbutterflychick 2 in Physics

2006-10-02 04:28:26 · 22 answers · asked by john r 3 in Other - Science

27 over 8 power minus 2/3

applied math

2006-10-02 04:27:46 · 7 answers · asked by Schnatzel 2 in Mathematics

# herarts chambers ect.

2006-10-02 04:24:36 · 6 answers · asked by homie101 4 in Zoology

0.6 divided by 0.01 and the other question I don't get is multiply the following 4x(-9)x(-7)x3x(-3). It has been 25 years since I took algebra, any help would be greatly appreciated.

2006-10-02 04:24:31 · 2 answers · asked by Flower Girl 6 in Mathematics

2006-10-02 04:24:02 · 4 answers · asked by nerdwannabe 1 in Chemistry

This is a serious question,, what acutually happens to the photons?

2006-10-02 04:24:01 · 3 answers · asked by landerscott 4 in Physics

2006-10-02 04:23:42 · 6 answers · asked by ? 1 in Medicine

2006-10-02 04:23:31 · 5 answers · asked by gorgeousgirl111 1 in Astronomy & Space

2006-10-02 04:22:50 · 9 answers · asked by Anonymous in Other - Science

I guess I've always wanted to know...and since Halloween is coming up, I thought I'd ask.

2006-10-02 04:21:19 · 4 answers · asked by couture.freak 1 in Botany

I want to no what the exact speed of light is in km/h and meters p/s
aswell as miles p/s

thanx

2006-10-02 04:20:48 · 18 answers · asked by Anonymous in Other - Science

A point P is placed at random on the circumfrence of the unit circle x^2+y^2=1. A point Q is placed at random in the interior of the circle. If the rectangle R has as its diagonal the line segment PQ, what is the probablity that R is contained entirely in the unit circle?

2006-10-02 04:17:22 · 1 answers · asked by Anonymous in Mathematics

plz dont tell its meaning why they write it (just full form).

2006-10-02 04:16:38 · 10 answers · asked by azhar 1 in Medicine

For each pair of compounds examine the different types of strain present, then identify the more stable (lower energy) isomer or compound and explain your reasoning.

2.a) cyclopentane b) methylcyclobutane

2006-10-02 04:15:38 · 3 answers · asked by afchica101 1 in Chemistry

I want to know if anyone was a little off last night? I know your curious as to what i mean by that!
Well it seemed as though i couldnt sleep last night or my son or mom or dad or boyfriend> Why is my question..
I argued with my boyfriend last night my mom argued with my dad.. Thing is we dont live in the same house..
Were the planets not lined up right or was some weird thing going on kinda like a full moon? Yes this is a weird question but maybe some Physic can fill me in? Dont laugh PLZ i'am serious!!

2006-10-02 04:15:33 · 13 answers · asked by heavenly2521 2 in Astronomy & Space

tell me about
Broadleaf plantago
smart weed polygonom
Dandelion Taraxacum
And
Wood sorrel oxalis

2006-10-02 04:15:20 · 1 answers · asked by hazel 2 in Biology

1=-1

1=root of 1square=root of -1*-1=root of -1square=-1

plz answer
what's wrong with this proof!!!!!!!!!!!!

2006-10-02 04:11:11 · 15 answers · asked by mogambo 1 in Mathematics

2006-10-02 04:08:13 · 12 answers · asked by Anonymous in Zoology

Many times the Storm Predicition Center gives us numerical figures. They often use Joules per kilogram as a measure of energy. So I want to have an idea of how big a kilogram of air is (median, average, whatever)

2006-10-02 04:06:24 · 2 answers · asked by waveform 2 in Weather

2006-10-02 04:05:08 · 1 answers · asked by Anonymous in Chemistry

first trig homework, now this! i forgot what this meant, and my mom threw away my notes, so...yeah. sux. can u also show examples? EXAMPLES EXAMPLES EXAMPLES...

2006-10-02 04:04:45 · 1 answers · asked by uNiiQue 1 in Mathematics