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diff --git a/172/CH4/EX4.4/ex4.sce b/172/CH4/EX4.4/ex4.sce
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+//example 4
+//calculating work done
+clear
+clc
+v1=0.35411 //specific volume at state 1 in m^3/kg
+v2=v1/2 
+m=0.1 //mass of water in kg
+P1=1000 //pressure inside cylinder in kPa
+W=m*P1*(v2-v1) //in kJ
+disp('hence,the work in the overall process is -17.7 kJ')
+\ No newline at end of file