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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /2465/CH3/EX3.9 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '2465/CH3/EX3.9')
| -rw-r--r-- | 2465/CH3/EX3.9/Ex3_9.sce | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/2465/CH3/EX3.9/Ex3_9.sce b/2465/CH3/EX3.9/Ex3_9.sce new file mode 100644 index 000000000..1a02f1182 --- /dev/null +++ b/2465/CH3/EX3.9/Ex3_9.sce @@ -0,0 +1,25 @@ +//Chapter-3,Example 9,Page 59
+clc;
+close;
+
+mole_U =11.9/238 //mole of Uranium
+
+mole_Pb =10.3/206 //mole of lead
+
+t_half= 4.5*10^9 //half life of Uranium
+
+// U(238)=(U(238) + Pb(206)) * exp(-lamda*t)
+
+// 1 = (1 + Pb(206)/U(238)) * exp(-lamda*t)
+
+// 1 = (1 + 0.5) * exp(-lamda*t)
+
+lamda = 0.693/t_half
+
+t= log10(1+ mole_Pb/mole_U)/(log10(%e)*lamda)
+
+printf('the age of the ore is ')
+
+disp(t)
+
+printf(' years')
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