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clear;
clc;
printf("\t\t\tProblem Number 6.9\n\n\n");
// Chapter 6: The Ideal Gas
// Problem 6.9 (page no. 252)
// Solution
T2=500+460; //absolute final temperature //unit:R
T1=80+460; //absolute initial temperature //unit:R
//The equation cpbar= 0.338-(1.24*10^2/T)+(4.15*10^4)/T^2 has a form , cbar= Adash+(Bdash/T)+(Ddash/T^2)
//So,
Adash=0.338; //constant
Bdash=-1.24*10^2; //constant
Ddash=4.15*10^4; //constant
//Therefore,from equation,cbar=Adash+((Bdash*log(T2/T1))/(T2-T1))+(Ddash/(T2*T1))
cpbar=Adash+((Bdash*log(T2/T1))/(T2-T1))+(Ddash/(T2*T1)); //The mean specific heat //Btu/lbm*R
printf("The mean specific heat at constant pressure between 80F and 500F is %f Btu/lbm*R\n",cpbar);
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