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diff --git a/2066/CH9/EX9.3/9_3.sce b/2066/CH9/EX9.3/9_3.sce
new file mode 100755
index 000000000..9e3c9acaa
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+clc
+clear
+//Initialization of variables
+V=200 //ft/s
+L=5 //ft
+B=2 //ft
+rho=0.00232 //slug/ft^3
+mu=3.82e-7 //lb-sec/ft^2
+p2=14.815 //psia
+pa=14.7 //psia
+//calculations
+Nr=V*L*rho/mu
+Cdf=0.0032
+Fdf=Cdf*%pi*L*B*0.5*rho*V^2
+Fd=(p2-pa)*%pi/4 *(B*12)^2 -Fdf
+//results
+printf("Drag on the model = %.2f lb",Fd)