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+
+//Example 9_12
+clc();
+clear;
+//To find out the sedimentation rate of spherical particles
+b=2*10^-3   //units in cm
+g=9.8    //Units in meters/sec^2
+n=1   //units in m PI
+Pp_Pt=1050   //units in Kg/Meter^3
+vt=(((2*b^2*g)/(9*n))/(2*Pp_Pt))*10^6      //units in cm/sec
+printf("Sedimentation is vt=")
+disp(vt)
+printf("cm/sec")
+//in text book answer  is printed wrong as vt=4.36*10^-3 cm/sec but the correct answer is vt=4.14*10^-3 cm/sec