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diff --git a/689/CH3/EX3.6/6.sce b/689/CH3/EX3.6/6.sce
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+clc; funcprot(0);
+//Example 3.6 Bernoulli Equation for compressible flow
+
+// Initialisation of variables
+gma = 1.4;
+P0 = 14.7;
+rho = 0.002378;
+V0= 500;
+P1 = 13.5;
+
+// Calculations
+a0 = sqrt(gma*P/rho);
+V1 =sqrt(V0^2 + 2*a0^2*(1-(P1/P0)^(1-1/gma))/(gma-1));
+
+//Results 
+disp(V1 , "Speed of sound when pressure is 13.5 lb per sq in  (in ft/sec):");