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diff --git a/689/CH3/EX3.2/2.sce b/689/CH3/EX3.2/2.sce
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+clc; funcprot(0);
+//Example 3.2  Equation of states
+
+// Initialisation of variables
+T = -10+459.4;
+P = 16.38;
+P0 = 29.92;
+T0 = 518.4;
+rho_0 = 0.002378 
+g = 32.1740;
+
+// Calculations
+rho = P*rho_0*T0/(P0*T);
+W =  rho*g;
+
+//Results 
+disp(W , "Spwcific gravity of dry air (lb/ft3):");
+