initial commit / add all books

5 files changed, 91 insertions, 0 deletions

diff --git a/884/CH7/EX7.1/Example7_1.sce b/884/CH7/EX7.1/Example7_1.sce
new file mode 100755
index 000000000..4c5fcb7cf
--- /dev/null
+++ b/884/CH7/EX7.1/Example7_1.sce
@@ -0,0 +1,14 @@
+//calculation of speed of a wave

+

+clear;

+clc;

+

+printf("\t Example 7.1\n");

+

+lambda=17.4;//wavelength, cm

+v=87.4;//frequency, Hz

+u=lambda*v;//speed of wave, cm/s

+

+printf("\t the speed of a wave is : %4.2f *10^3 cm/s\n",u*10^-3);

+

+//End

diff --git a/884/CH7/EX7.2/Example7_2.sce b/884/CH7/EX7.2/Example7_2.sce
new file mode 100755
index 000000000..6de825568
--- /dev/null
+++ b/884/CH7/EX7.2/Example7_2.sce
@@ -0,0 +1,14 @@
+//calculation of frequency of a wave

+

+clear;

+clc;

+

+printf("\t Example 7.2\n");

+

+lambda=522*10^-9;//wavelength, m

+c=3*10^8;//speed of light in vacuum, m/s

+v=c/lambda;//frequency, Hz

+

+printf("\t the frequency of the wave is : %4.2f *10^14 Hz\n",v*10^-14);

+

+//End

diff --git a/884/CH7/EX7.3/Example7_3.sce b/884/CH7/EX7.3/Example7_3.sce
new file mode 100755
index 000000000..d3319c4da
--- /dev/null
+++ b/884/CH7/EX7.3/Example7_3.sce
@@ -0,0 +1,22 @@
+//calculation of energy of a photon

+

+clear;

+clc;

+

+printf("\t Example 7.3\n");

+

+c=3*10^8;//speed of light in vacuum, m/s

+h=6.63*10^-34;//planck's constant, J s

+//(a)

+lambda=5*10^-5;//wavelength, m

+E=h*c/lambda;//energy, J

+

+printf("\t (a) the energy of the photon is : %4.2f *10^-21 J\n",E*10^21);

+

+//(b)

+lambda=5*10^-11;//wavelength, m

+E=h*c/lambda;//energy, J

+

+printf("\t (b) the energy of the photon is : %4.2f *10^-15 J\n",E*10^15);

+

+//End

diff --git a/884/CH7/EX7.4/Example7_4.sce b/884/CH7/EX7.4/Example7_4.sce
new file mode 100755
index 000000000..adee9ac51
--- /dev/null
+++ b/884/CH7/EX7.4/Example7_4.sce
@@ -0,0 +1,18 @@
+//calculation of wavelength of a photon from an electronic transition

+

+clear;

+clc;

+

+printf("\t Example 7.4\n");

+

+c=3*10^8;//speed of light in vacuum, m/s

+h=6.63*10^-34;//planck's constant, J s

+Rh=2.18*10^-18;//rydberg's constant, J

+ni=5;//initial orbit

+nf=2;//final orbit

+deltaE=Rh*(1/ni^2-1/nf^2);

+lambda=c*h/-deltaE;

+

+printf("\t the wavelength of the photon is : %4.0f nm\n",lambda*10^9);

+

+//End

diff --git a/884/CH7/EX7.5/Example7_5.sce b/884/CH7/EX7.5/Example7_5.sce
new file mode 100755
index 000000000..bef21012b
--- /dev/null
+++ b/884/CH7/EX7.5/Example7_5.sce
@@ -0,0 +1,23 @@
+//calculation of wavelength of a particle

+

+clear;

+clc;

+

+printf("\t Example 7.5\n");

+

+//(a)

+h=6.63*10^-34;//planck's constant, J s

+m=0.06;//mass, kg

+u=63;//speed, m/s

+lambda=h/(m*u);//wavelength, m

+

+printf("\t the wavelength of the tennis ball is : %4.1f *10^-34 m\n",lambda*10^34);

+

+//(b)

+m=9.1094*10^-31;//mass, kg

+u=68;//speed, m/s

+lambda=h/(m*u);//wavelength, m

+

+printf("\t the wavelength of the electron is : %4.1f *10^-5 m\n",lambda*10^5);

+

+//End