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+//Example 20.2
+close;
+clc;
+//given data
+m=200; //Mass in grams
+sp=1; //sp heat of water in cal/gm deg C
+T1=30; //in deg C
+T2=40; //in deg C
+//power radiated
+p=4.18*m*sp*(T2-T1);
+printf('\nPower radiated %0.2f kW\n',p/1000); \ No newline at end of file