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+clc;clear;
+//Example 15.12
+//calculation of amount of fuel
+
+//given values
+P=100*10^6;//power required by city
+M=235;//atomic mass of Uranium in g
+e=20/100;//conversion efficiency
+NA=6.02*10^26;//avogadros number
+E=200*10^6*1.6*10^-19;//energy released per fission
+t=8.64*10^4;//day in seconds
+
+
+//calculation
+E1=P*t;//energy requirement
+m=E1*M/(NA*e*E);//no of nuclei N=NA*m/M,energy released by m kg is N*E,energy requirement=e*N*E
+disp(m,'amount of fuel(in kg) required is');
+\ No newline at end of file