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diff --git a/914/CH2/EX2.9/ex2_9.sce b/914/CH2/EX2.9/ex2_9.sce
new file mode 100755
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+clc;
+warning("off");
+printf("\n\n example2.9 - pg44");
+// given
+A=5;  //[m^2] - area of the plates
+Ft=0.083  //[N] - force on the top plate
+Fb=-0.027;  //[N] - force on the bottom plate
+ut=-0.3;  //[m/sec] - velocity of the top plate
+ub=0.1;  //[m/sec] - velocity of the bottom plate
+dely=0.01;  //[m]
+delux=ut-ub;  //[m/sec]
+// using the formula tauyx=F/A=-mu(delux/dely)
+tauyx=(Ft-Fb)/A;
+mu=tauyx/(-delux/dely);  //[Ns/m^2]
+mu=mu*10^3;  //[cP]
+printf("\n\n The viscosity of toulene in centipose is %fcP",mu);
+