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+//Example 11_5
+clc();
+clear;
+//To findout how long does the heater takes to heat
+m=500      //Units in gm
+c=0.033       //Units in Cal/gm Centigrade
+tf=357     //Units in Centigrade
+to=20     //Units in Centigrade
+m1=30       //Units in gm
+hv=65     //Units in cal/gm
+Hg=((m*c*(tf-to))+(m1*hv))*4.1808135       //units in Joules
+delivered=70      //Units in Joule/Sec
+t=Hg/delivered     //Units in sec
+printf("The time taken is t=%d sec",t)
+//In textbook answer printed wrong as t=450 sec correct answer is t=448 sec