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diff --git a/965/CH2/EX2.29/29.sci b/965/CH2/EX2.29/29.sci
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+clc;
+clear all;
+disp("interface temperature")
+La=0.12;//m
+Lb=0.12;//m
+Lc=0.012;//m
+
+hcf=18;//W/(m^2*C)
+
+kA=1.6;//W/(m*C)
+kB=0.3;//W/(m*C)
+kC=0.14;//W/(m*C)
+
+Rair=0.16;//K/W
+
+thf=1090;// degree C temperature
+tcf=20;// degree C temperature
+
+Rtotal =(La/kA)+Rair+(Lb/kB)+(Lc/kC)+1/hcf
+
+q=(thf-tcf)/Rtotal;
+
+disp("W",q,"rate of heat flow per m^2 surface area = ")
+
+
+//q=(thf-t2)/(La/kA)
+t2=thf-q*(La/kA);
+disp ("degree C",t2,"t2 = ")
+
+//q=(t2-t3)/(Rair)
+t3=t2-q*(Rair);
+disp ("degree C",t3,"t3 = ")
+
+//q=(t3-t4)/(Lb/B)
+t4=t3-q*(Lb/kB);
+disp ("degree C",t4,"t4= ")
+
+
+//q=(t4-t5)/(Lc/kC)
+t5=t4-q*(Lc/kC);
+disp ("degree C",t5,"t5 = ")
+