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+//Calculate the Wavelength associated with Tennis ball and for an Electron traveling at the same speed 
+
+//Example 14.4
+
+clc;
+
+clear;
+
+h=6.626*10^-34;  //Planck's constant in J s
+
+m1=6.0*10^-2;  //Mass of the tennis ball in kg
+
+v=62;  ///Speed of the tennis ball in m s^-1
+
+Lemda1=h/(m1*v);  //Wavelength of tennis ball in m (1 J=1 kg m^2 s^-2)
+
+printf("Wavelength of tennis ball = %.1f*10^-34 m",Lemda1*10^34);
+
+m2=9.10939*10^-31;  //Mass of the electron in kg
+
+Lemda2=h/(m2*v);  //Wavelength of electron in m
+
+Lemda=Lemda2*10^9;  //Wavelength of electron in nm
+
+printf("\n Wavelength of electron = %.1f*10^4 nm",Lemda*10^-4);