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

---
 2780/CH7/EX7.28/Ex7_28.sce | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100755 2780/CH7/EX7.28/Ex7_28.sce

(limited to '2780/CH7/EX7.28')

diff --git a/2780/CH7/EX7.28/Ex7_28.sce b/2780/CH7/EX7.28/Ex7_28.sce
new file mode 100755
index 000000000..0eb5dcba4
--- /dev/null
+++ b/2780/CH7/EX7.28/Ex7_28.sce
@@ -0,0 +1,11 @@
+clc
+//to calculate energy of a neutron
+//consider nucleus as a cubical box of size 10^-14m
+//x=y=z=a=10^-14=l
+//for neutron to be in the lowest energy state nx=ny=nz=1
+//formula is E=(%pi^2*h^2/8*%pi^2*m)*((nx/lx)^2+(ny/ly)^2+(nz/lz)^2)
+h=6.626*10^-34  //planck's constant in Js
+m=1.6*10^-27 //mass in kg
+l=10^-14 //in m
+E=(%pi^2)*(h^2)*3/(4*(%pi^2)*2*m*(1.6*10^-19)*l^2)
+disp("lowest energy of a neutron is E="+string(E)+"eV")
-- 
cgit