From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 2243/CH8/EX8.11/Ex8_11.sce  | 19 +++++++++++++++++++
 2243/CH8/EX8.11/Res8_11.txt |  1 +
 2 files changed, 20 insertions(+)
 create mode 100755 2243/CH8/EX8.11/Ex8_11.sce
 create mode 100755 2243/CH8/EX8.11/Res8_11.txt

(limited to '2243/CH8/EX8.11')

diff --git a/2243/CH8/EX8.11/Ex8_11.sce b/2243/CH8/EX8.11/Ex8_11.sce
new file mode 100755
index 000000000..de1dd6847
--- /dev/null
+++ b/2243/CH8/EX8.11/Ex8_11.sce
@@ -0,0 +1,19 @@
+clc();
+clear;
+//Given :
+T_half = 5730; // carbon 14 half life in years
+Na = 6.023*10^23; // Avogadro constant in nuclei/mole
+M = 25;// charcoal mass in gm
+mm = 12;// molar mass of carbon 12 in gm/mole
+a = 250 ; // disinitegrations per minute  (Carbon 14 activity)
+// 1 year = 525949 minutes
+lambda = 0.693/(T_half*525949);// disinitegrations per minute per nucleus
+N0_1 = (Na/mm)*M ; // Number of nuclei (Carbon 12)
+// Carbon 14 to Carbon 12  ratio  = 1.3*10^-12 
+N0_2 = 1.3*10^-12*N0_1 ; // Number of nuclei (Carbon 14)
+R0 = N0_2*lambda ; // disinitegrations per minute per nucleus
+a0 = R0 ; // initial activity
+t = log(a0/a)/lambda ;
+// 1 year = 525949 minutes
+printf("The tree died %d  years ago",t/525949 );
+// Result obtained differs from the textbook, because R0 value obtained here is 375.1025, where as in textbook it is 374.  
diff --git a/2243/CH8/EX8.11/Res8_11.txt b/2243/CH8/EX8.11/Res8_11.txt
new file mode 100755
index 000000000..5261abcc3
--- /dev/null
+++ b/2243/CH8/EX8.11/Res8_11.txt
@@ -0,0 +1 @@
+ The tree died 3337  years ago 
\ No newline at end of file
-- 
cgit