From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001
From: prashantsinalkar
Date: Tue, 10 Oct 2017 12:27:19 +0530
Subject: initial commit / add all books

---
 3685/CH7/EX7.2/Ex7_2.sce | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 3685/CH7/EX7.2/Ex7_2.sce

(limited to '3685/CH7/EX7.2/Ex7_2.sce')

diff --git a/3685/CH7/EX7.2/Ex7_2.sce b/3685/CH7/EX7.2/Ex7_2.sce
new file mode 100644
index 000000000..6efb5ccdc
--- /dev/null
+++ b/3685/CH7/EX7.2/Ex7_2.sce
@@ -0,0 +1,24 @@
+clc
+// Part (a)
+T1 = 273 // Initial temperature of water in Kelvin
+T2 = 373 // Temperature of heat reservoir in Kelvin
+m = 1 // Mass of water in kg
+cv = 4.187 // Specific heat capacity of water
+
+printf("\n Example 7.2")
+Ss = m*cv*log(T2/T1) // entropy change of water
+Q = m*cv*(T2-T1) // Heat transfer 
+Sr = -(Q/T2) // Entropy change of universe
+S = Ss+Sr // Total entropy change
+
+printf("\n The entropy change of the universe is %f kJ/K",S)
+
+// Part (b)
+T3 = 323 // Temperature of intermediate reservoir in K
+Sw = m*cv*(log(T3/T1)+log(T2/T3)) // entropy change of water
+Sr1 = -m*cv*(T3-T1)/T3 // Entropy change of universe
+Sr2 = -m*cv*(T2-T3)/T2 // Entropy change of universe
+Su = Sw+Sr1+Sr2 // Total entropy change
+printf("\n The entropy change of the universe is %f kJ/K",Su)
+//The answers vary due to round off error
+
-- 
cgit