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//calculation of speed of a wave
clear;
clc;
printf("\t Example 7.1\n");
lambda=17.4;//wavelength, cm
v=87.4;//frequency, Hz
u=lambda*v;//speed of wave, cm/s
printf("\t the speed of a wave is : %4.2f *10^3 cm/s\n",u*10^-3);
//End
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