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+clc
+// Example 3.10.py
+// In example 3.9, how much heat per unit mass must be added to choke the flow//
+
+
+// Variable declaration from example 3.9
+To1 = 840              // upstream total temperature (in K)
+M1 = 3.0               // upstream mach number
+To1_by_Tostar = 0.6540 // To1/Tostar from Table A3
+cp = 1004.5            // specific heat at constant pressure for air (in J/Kg K)
+
+// Calculations 
+Tostar = To1 / To1_by_Tostar // Tostar = To1 * Tostar/To1 (in K)
+
+M2 = 1.0         // for choked flow
+To2 = Tostar     // since M2 = 1.0
+
+q = cp * (To2 - To1) // required heat = cp(To2 - To1) (in J/kg)
+
+
+// Result 
+printf("\n Heat require to choke the flow is %.2e J/kg", q)
+