initial commit / add all books

12 files changed, 87 insertions, 0 deletions

diff --git a/3875/CH12/EX12.1/12_1.txt b/3875/CH12/EX12.1/12_1.txt
new file mode 100644
index 000000000..33d887bce
--- /dev/null
+++ b/3875/CH12/EX12.1/12_1.txt
@@ -0,0 +1,3 @@
+The energy of the particle is = 2.96e-20 Joules

+The momentum of the particle is = 9.94e-24 kg-ms^-1

+The probability of finding particle between x=0 and x=L/3 is = 0.333333
\ No newline at end of file
diff --git a/3875/CH12/EX12.1/Ex12_1.sce b/3875/CH12/EX12.1/Ex12_1.sce
new file mode 100644
index 000000000..36d5a9310
--- /dev/null
+++ b/3875/CH12/EX12.1/Ex12_1.sce
@@ -0,0 +1,21 @@
+clc;

+clear;

+m=1.67*10^-27 //mass of particle in kPP

+L=0.1*10^-9 //width in nm

+n=3 //quantum number

+h=6.63*10^-34 //Plancks constant in J-s

+

+//calculation

+//(1)

+E=(n^2*h^2)/(8*m*L^2) 

+mprintf("The energy of the particle is = %2.2e Joules\n",E)

+//The answer provided in the textbook is wrong.

+

+//(2)

+lambda=(2*L)/n

+p=h/lambda

+mprintf("The momentum of the particle is = %1.2e kg-ms^-1\n",p)

+

+//(3)

+P=((1/L)*(L/3)) //after integration

+mprintf("The probability of finding particle between x=0 and x=L/3 is = %f",P)

diff --git a/3875/CH12/EX12.2/12_2.txt b/3875/CH12/EX12.2/12_2.txt
new file mode 100644
index 000000000..ea2f295be
--- /dev/null
+++ b/3875/CH12/EX12.2/12_2.txt
@@ -0,0 +1 @@
+ The wavelength of radiation emitted is 1.22e-07 m or 122 nm
\ No newline at end of file
diff --git a/3875/CH12/EX12.2/Ex12_2.sce b/3875/CH12/EX12.2/Ex12_2.sce
new file mode 100644
index 000000000..0b6c6fb2b
--- /dev/null
+++ b/3875/CH12/EX12.2/Ex12_2.sce
@@ -0,0 +1,11 @@
+clc;

+clear;

+h=6.63*10^-34 //Plancks constant in J-s

+m=9.1*10^-31 //mass in kg

+L=10^-9 //potential width in m

+c=3*10^8 //velocity of light in m/s

+

+//calculation

+lambda=(8*m*c*L^2)/(27*h)

+mprintf("The wavelength of radiation emitted is %1.2e m or 122 nm",lambda)

+//The answer varies due to round off error.

diff --git a/3875/CH12/EX12.3/12_3.txt b/3875/CH12/EX12.3/12_3.txt
new file mode 100644
index 000000000..502fada12
--- /dev/null
+++ b/3875/CH12/EX12.3/12_3.txt
@@ -0,0 +1 @@
+ The uncertainity in momentum of the electron is = 5.28e-26 kgms^-1
\ No newline at end of file
diff --git a/3875/CH12/EX12.3/Ex12_3.sce b/3875/CH12/EX12.3/Ex12_3.sce
new file mode 100644
index 000000000..bba9994ea
--- /dev/null
+++ b/3875/CH12/EX12.3/Ex12_3.sce
@@ -0,0 +1,10 @@
+clc;

+clear;

+delta_x=10^-9 //uncertainity in the position of electron in m

+h=6.63*10^-34 //Plancks constant in J-s

+

+//calculation

+delta_p=h/(4*%pi*delta_x)

+

+mprintf("The uncertainity in momentum of the electron is = %1.2e kgms^-1",delta_p)

+//The answer provided in the textbook is wrong.

diff --git a/3875/CH12/EX12.4/12_4.txt b/3875/CH12/EX12.4/12_4.txt
new file mode 100644
index 000000000..d2b8a4ea0
--- /dev/null
+++ b/3875/CH12/EX12.4/12_4.txt
@@ -0,0 +1 @@
+ The maximum quantum number possible is 4
\ No newline at end of file
diff --git a/3875/CH12/EX12.4/Ex12_4.sce b/3875/CH12/EX12.4/Ex12_4.sce
new file mode 100644
index 000000000..626108ed0
--- /dev/null
+++ b/3875/CH12/EX12.4/Ex12_4.sce
@@ -0,0 +1,11 @@
+clc;

+clear;

+L=0.5*10^-9 //width in m

+m=9.1*10^-31 //mass in kg

+V_0=15*1.6*10^-19 //height of the potential well in J

+h=6.63*10^-34 //Plancks constant in J-s

+

+//calculation

+n_max=(4*L*sqrt(m*V_0))/h

+

+mprintf("The maximum quantum number possible is %d",n_max)

diff --git a/3875/CH12/EX12.5/12_5.txt b/3875/CH12/EX12.5/12_5.txt
new file mode 100644
index 000000000..032879832
--- /dev/null
+++ b/3875/CH12/EX12.5/12_5.txt
@@ -0,0 +1 @@
+ The penetration distance of the electron is = 1.16e-09 m or 1.16 nm
\ No newline at end of file
diff --git a/3875/CH12/EX12.5/Ex12_5.sce b/3875/CH12/EX12.5/Ex12_5.sce
new file mode 100644
index 000000000..0562e3c85
--- /dev/null
+++ b/3875/CH12/EX12.5/Ex12_5.sce
@@ -0,0 +1,12 @@
+clc;

+clear;

+m=9.1*10^-31 //mass in kg

+h=6.63*10^-34 //Plancks constant in J-s

+v=10^5 //velocity in m/s

+

+//calculation

+E=(m*v^2)/2

+gam=(2*%pi*sqrt(2*m*E))/h //in m^-1

+d=1/gam

+

+mprintf("The penetration distance of the electron is = %1.2e m or 1.16 nm",d)

diff --git a/3875/CH12/EX12.6/12_6.txt b/3875/CH12/EX12.6/12_6.txt
new file mode 100644
index 000000000..246c61979
--- /dev/null
+++ b/3875/CH12/EX12.6/12_6.txt
@@ -0,0 +1 @@
+ The tunneling probability is = 1.44
\ No newline at end of file
diff --git a/3875/CH12/EX12.6/Ex12_6.sce b/3875/CH12/EX12.6/Ex12_6.sce
new file mode 100644
index 000000000..62e884fe1
--- /dev/null
+++ b/3875/CH12/EX12.6/Ex12_6.sce
@@ -0,0 +1,14 @@
+clc;

+clear;

+h=6.63*10^-34 //Plancks constant in J-s

+m=9.1*10^-31 //mass in kg

+E=2 //energy in eV

+V_0=20 //height of potential barrier in eV

+alpha=0.3*10^-9 //width of potental barrier in m

+e=1.6*10^-19 //charge in C

+

+//calculation

+Gamma=((sqrt(2*m*(V_0-E)))*1.6*10^-19)/h //in m^-1

+T=(16*E*(V_0-E)*exp(-2*Gamma*alpha))/V_0^2

+mprintf("The tunneling probability is = %1.2f",T)

+//The answer provided in the textbook is wrong.