diff options
Diffstat (limited to '2243/CH8/EX8.11')
| -rwxr-xr-x | 2243/CH8/EX8.11/Ex8_11.sce | 19 | ||||
| -rwxr-xr-x | 2243/CH8/EX8.11/Res8_11.txt | 1 |
2 files changed, 20 insertions, 0 deletions
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 |