Recent content by lycraa

well, for NON ionized hydrogen, you would have only one electron. meaning that the number density would be the same as the electron density. So would i be right in saying then, that if the average separation i found using the electron density equals 2* bohr radius, i would have mostly non...

Homework Statement in part 1 i used the Saha equation to calculate that the hydrogen in the center of the sun was fully ionized (given temperature and central electron density). part 2 says: Re-examine the result by computing the average separation of atoms at the center of the sun knowing...

is there a way do make a floating point number only display to a certain decimal place in java? I am sure there is but i have no idea how.

woops, yes that's right, i ran it with a floating point number

bingo! You got it :) I ran it with int instead of int and it worked beautifully. I ended up with 26.4 million days, which is what i was expecting. its my first time dealing with the long variable, I'm not sure why i didn't pick up on that. Sorry about the code, its my first time posting code...

i think thers a problem with my inner while loop. It i break it down to just: public class Worm2 { public static void main(String[] arg) { long day, distance, length, n, j, i; day = 1; length = 100; distancefrend = 0; n = 1; j = 0; i = 0...

this is exactly right, and a much better way of describing it.

put it this way: the rope starts at 100 meters on day = 0, and the ant is at x = xo over night the rope stretches to 200 meters,, so on day 2, the rope is 200m and in the morning the ant walks 6 meters along the rope so x = 6m. over night the rope is stretched another 100m BUT the ant's...

Homework Statement Write a Java program to solve the following problem. An elastic rope starts out with length 100 meters. The start of the rope is fixed to a pole and a worm is placed on the rope at the start and the worm starts crawling towards the end. Each day the worm crawls 6 meters...

figured it out myself, thanks

have i done the integration wrong here?I feel liek i must have sense i don't really know how i would go about integrating cos3x sin(nx) OR cos3x cos(nx)

Homework Statement determine the Fourier Series for f(x)=cos3x Homework Equations f(x)=ao/2+(sum) an cos(nx)+ (sum) bncos(nx) ao= (integral) f(x)dx (from -\pi to\pi) an= (integral) f(x)cos(nx)dx (from -\pi to\pi) bn= (integral) f(x)sin(nx)dx (from -\pi to\pi) The Attempt at a Solution i...

Determining Legendre derivitives Homework Statement if i need to find the derivative of the first Legendre polynomial, P1(cos\Theta) can i sub in cos\Theta for x in P1(x) = x? Homework Equations The Attempt at a Solution if that's the case the derivative is just -sin(\Theta), which...

Homework Statement i need to derive the recurrence relations for the spherical Bessel function. i got jn-1(x)+jn+1(x)=(2n+1)/x jn(x) but i can't get njn-1(x)-(n+1)jn+1(x)=(2n+1) j'n(x). i know i have to use jn(x)=(pi/2x)1/2Jn+1/2(x) and the recurrence relations for regular bessel functions...