HW 9/12/2018 1. Generate a table of conversions from feet per second to miles per hour. Start the ft/s column at 0 and increment by 5 ft/s. The last line should contain the value 100 ft/s. (Recall that 1 mi = 5280 ft) 
 

#include <stdio.h>

#include<math.h>

#define PI 3.141593

int main(void) {

     double ft_s=0;

      double mi_h; 

        printf("ft/s       to    mi/h \n");

         while (ft_s <= 100) 

         {   mi_h = ft_s*0.681; 

          printf("%8.2f       %6.4f \n",ft_s,mi_h); 

           ft_s += 5;  }

            return 0;

} 2.

#include <stdio.h>

#include <math.h>

#define PI 3.141593

int main(void)

{

int step;

double A1, A2, OMG1, OMG2, height1, height2, l1, l2;

double T1, T2, w1, w2, sum, new_P, new_height, time_incr, t; double maxwave=0; 

printf("Enter wave period (s) wave height (ft) \n");

scanf("%lf %lf",&T1,&height1);

printf("Enter wave period (s) wave height (ft) \n");

scanf("%lf %lf",&T2,&height2);

l1 = 5.13*T1*T1;

l2 = 5.13*T2*T2;

printf("Wavelengths  (ft)  %.2f %.2f \n",l1,l2);

new_P = T1*T2;

time_incr = new_P/200;

A1 = height1/2; A2 = height2/2;

OMG1 = 1/T1;

OMG2 = 1/T2;

for (step=0; step<=199; step++)

{ t = step*time_incr;

w1 = A1*sin(2*PI*OMG1*t);

  w2 = A2*sin(2*PI*OMG2*t);

sum = w1 + w2;

if (sum > maxwave) maxwave = sum; }

new_height = maxwave*2;

printf("Maximum wave %3.2f ft \n",new_height);

return 0;

} I

#include <stdio.h>

#include <math.h>

#define PI 3.141593

int main(void)

{

int step;

double A1, A2, OMG1, OMG2, height1, height2, l1, l2,maxcrest,mintro;

double T1, T2, w1, w2, sum, new_P, new_height, time_incr, t; double maxwave=0; 

printf("Enter wave period (s) wave height (ft) \n");

scanf("%lf %lf",&T1,&height1);

printf("Enter wave period (s) wave height (ft) \n");

scanf("%lf %lf",&T2,&height2);

l1 = 5.13*T1*T1;

l2 = 5.13*T2*T2;

printf("Wavelengths  (ft)  %.2f %.2f \n",l1,l2);

new_P = T1*T2;

time_incr = new_P/200;

A1 = height1/2; A2 = height2/2;

OMG1 = 1/T1;

OMG2 = 1/T2;

for (step=0; step<=199; step++)

{ t = step*time_incr;

w1 = A1*sin(2*PI*OMG1*t);

  w2 = A2*sin(2*PI*OMG2*t);

sum = w1 + w2;

if (sum > maxwave) maxwave = sum; }

new_height = maxwave*2; maxcrest= new_height/2; mintro=maxcrest*-1;

printf("Maximum wave %3.2f ft \n",new_height);

printf("max crest and  min trough for combined waves %3.2f %3.2f \n",maxcrest,mintro);

return 0;

}

II

#include <stdio.h>

#include <math.h>

#define PI 3.141593

int main(void)

{

double A1, A2, OMG1, OMG2, height1, height2, l1, l2;

double T1, T2, w1, w2, sum, new_height, t;

printf("Enter wave period (s) wave height (ft) \n");

scanf("%lf %lf",&T1,&height1);

printf("Enter wave period (s) wave height (ft) \n");

scanf("%lf %lf",&T2,&height2);

printf(" Enter time (s)  \n");

scanf("%lf",&t);

l1 = 5.13*T1*T1;

l2 = 5.13*T2*T2;

printf("Wavelengths  (ft)  %.2f %.2f \n",l1,l2);

A1 = height1/2; A2 = height2/2;

OMG1 = 1/T1;

OMG2 = 1/T2;

w1 = A1*sin(2*PI*OMG1*t);

  w2 = A2*sin(2*PI*OMG2*t);

sum = w1 + w2;

new_height = sum*2;

printf("wave height %3.2f ft \n",new_height);

return 0;

}

4

#include <stdio.h>

#include <math.h>

#define PI 3.141593

int main(void)

{

int step;

double A1, A2, OMG1, OMG2, height1, height2, l1, l2;

double theta, T1, T2, w1, w2, sum, new_P, new_height, time_incr, t; double maxwave=0;

printf("Enter wave period (s) wave height (ft) \n");

scanf("%lf %lf",&T1,&height1);

printf("Enter wave period (s) wave height (ft) \n");

scanf("%lf %lf",&T2,&height2);

printf("enter theta \n");

scanf("%lf",&theta);

l1 = 5.13*T1*T1;

l2 = 5.13*T2*T2;

printf("Wavelengths (ft) %.2f %.2f \n",l1,l2);

new_P = T1*T2;

time_incr = new_P/200;

A1 = height1/2; A2 = height2/2;

OMG1 = 1/T1;

OMG2 = 1/T2;

for (step=0; step<=199; step++)

{ t = step*time_incr;

w1 = A1*sin(2*PI*OMG1*t);

w2 = A2*sin((2*PI*OMG2*t)+theta);

sum = w1 + w2;

if (sum > maxwave) maxwave = sum; }

new_height = maxwave*2;

printf("Maximum wave %3.2f ft \n",new_height);

return 0;

}


5

#include <stdio.h>

#include <math.h>

#define PI 3.141593

int main(void)

{

int step;

double A1, A2, OMG1, OMG2, height1, height2, l1, l2;

double theta, T1, T2, w1, w2, sum, new_P, new_height, time_incr, t; double maxwave=0;

printf("Enter wave period (s) wave height (m) \n");

scanf("%lf %lf",&T1,&height1);

printf("Enter wave period (s) wave height (m) \n");

scanf("%lf %lf",&T2,&height2);

printf("enter theta (radian) \n");

scanf("%lf",&theta);

l1 = 5.13*T1*T1;

l2 = 5.13*T2*T2;

printf("Wavelengths (m) %.2f %.2f \n",l1,l2);

new_P = T1*T2;

time_incr = new_P/200;

A1 = height1/2; A2 = height2/2;

OMG1 = 1/T1;

OMG2 = 1/T2;

for (step=0; step<=199; step++)

{ t = step*time_incr;

w1 = A1*sin(2*PI*OMG1*t);

w2 = A2*sin((2*PI*OMG2*t)+theta);

sum = w1 + w2;

if (sum > maxwave) maxwave = sum; }

new_height = maxwave*2;

printf("Maximum wave %3.2f m \n",new_height);

return 0;

}


3

#include <stdio.h>

#include <math.h>

#define PI 3.141593

int main(void)

{

int step;

double A1, A2, OMG1, OMG2, height1, height2, l1, l2,k;

double T1, T2, w1, w2, sum, new_P, new_height, time_incr, t; double maxwave=0;

printf("Enter wave period (s) wave height (ft) \n");

scanf("%lf %lf",&T1,&height1);

printf("Enter wave period (s) wave height (ft) \n");

scanf("%lf %lf",&T2,&height2);

printf("Enter step \n");

scanf("%lf",&k);

l1 = 5.13*T1*T1;

l2 = 5.13*T2*T2;

printf("Wavelengths (ft) %.2f %.2f \n",l1,l2);

new_P = T1*T2;

time_incr = new_P/200;

A1 = height1/2; A2 = height2/2;

OMG1 = 1/T1;

OMG2 = 1/T2;

for (step=0; step<=k; step++)

{ t = step*time_incr;

w1 = A1*sin(2*PI*OMG1*t);

w2 = A2*sin(2*PI*OMG2*t);

sum = w1 + w2;

if (sum > maxwave) maxwave = sum; }

new_height = maxwave*2;

printf("Maximum wave %3.2f ft \n",new_height);

return 0;

}