//Example 3 //  Wavelength and frequency
clc;
clear;
close;
//given data :
d=30;// in cm
lamda=2*d*10^-2;
v=330;// in m/s
disp(lamda,"The wavelength,(m) = ")
n=v/lamda;
disp(n,"The frequency,n(vibrations/s) = ")