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

---
 3755/CH2/EX2.21/Ex2_21.sce | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 3755/CH2/EX2.21/Ex2_21.sce

(limited to '3755/CH2/EX2.21')

diff --git a/3755/CH2/EX2.21/Ex2_21.sce b/3755/CH2/EX2.21/Ex2_21.sce
new file mode 100644
index 000000000..dd20d6a71
--- /dev/null
+++ b/3755/CH2/EX2.21/Ex2_21.sce
@@ -0,0 +1,22 @@
+clear
+//
+//
+//
+
+//Variable declaration    
+a1=5.43*10^-8;    //lattice constant(cm)
+M1=28.1;         //atomic weight
+N=6.023*10^23;      //avagadro number
+n1=8;     //number of atoms
+a2=5.65*10^-8;    //lattice constant(cm)
+M2=144.6;         //atomic weight
+n2=4;     //number of atoms
+
+//Calculations
+rho1=n1*M1/(N*a1^3);    //density of Si(gm/cm^3)
+rho2=n2*M2/(N*a2^3);    //density of GaAs(gm/cm^3)
+
+//Result"
+printf("\n density of Si is %0.2f gm/cm^3",rho1)
+printf("\n density of GaAs is %0.3f gm/cm^3",rho2)
+printf("\n answer in the book varies due to rounding off errors")
-- 
cgit