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+//Example 29.10
+lambda=550*10^-9;//Wavelength (m)
+h=6.63*10^-34;//Planck's constant (J.s)
+p=h/lambda;//Momentum of the photon (kg.m/s)
+printf('a.Momentum of the photon = %0.2e kg.m/s',p)
+m=1*10^-9;//Mass of the particle of dust (kg)
+//After deducing from equation for conservation of momentum,
+v=p/m;//Recoil velocity of the particle of dust (m/s)
+printf('\nb.Recoil velocity of the particle of dust = %0.2e m/s',v)
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest