diff options
Diffstat (limited to '3845/CH31')
| -rw-r--r-- | 3845/CH31/EX31.1/Ex31_1.sce | 13 | ||||
| -rw-r--r-- | 3845/CH31/EX31.2/Ex31_2.sce | 11 | ||||
| -rw-r--r-- | 3845/CH31/EX31.3/Ex31_3.sce | 12 | ||||
| -rw-r--r-- | 3845/CH31/EX31.4/Ex31_4.sce | 9 | ||||
| -rw-r--r-- | 3845/CH31/EX31.5/Ex31_5.sce | 12 | ||||
| -rw-r--r-- | 3845/CH31/EX31.6/Ex31_6.sce | 11 | ||||
| -rw-r--r-- | 3845/CH31/EX31.7/Ex31_7.sce | 17 |
7 files changed, 85 insertions, 0 deletions
diff --git a/3845/CH31/EX31.1/Ex31_1.sce b/3845/CH31/EX31.1/Ex31_1.sce new file mode 100644 index 000000000..43b344cd1 --- /dev/null +++ b/3845/CH31/EX31.1/Ex31_1.sce @@ -0,0 +1,13 @@ +//Example 31.1
+r_0=1.2;//(fm)
+A=56;//Mass number of nucleus
+r=r_0*A^(1/3);//Radius of nucleus (fm)
+printf('a.Radius of nucleus = %0.1f fm',r)
+m=56;//mass (u)
+V=(4/3)*%pi*r^3;//Volume of sphere of radius r
+rho=m/V;//Density (u/fm^3)
+rho=0.138*(1.66*10^-27)/(10^-15)^3;//Density (kg/m^3), Convert fm to m (1 fm = 10^-15m)
+printf('\nb.Approximate density = %0.1e kg/m^3',rho)
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest
+
diff --git a/3845/CH31/EX31.2/Ex31_2.sce b/3845/CH31/EX31.2/Ex31_2.sce new file mode 100644 index 000000000..e08e1bf81 --- /dev/null +++ b/3845/CH31/EX31.2/Ex31_2.sce @@ -0,0 +1,11 @@ +//Example 31.2
+m_parent=239.052157;//Atomic mass of parent nucleus (Pu 239)(u), See Appendix A
+m_final=235.043924+4.002603;//Final atomic mass of products of decay (U 235 and He 4)(u), See Appendix A
+delta_m=m_parent-m_final;//Difference in mass (u)
+E=delta_m*931.5;//Energy emitted in decay (MeV)
+//E=delta_m*c^2, but 1 u=931.5MeV/c^2
+printf('Energy emitted in decay = %0.2f MeV',E)
+//Answer varies due to the difference in value of atomic mass of He-4 found in Appendix A and the value used in textbook
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest
+
diff --git a/3845/CH31/EX31.3/Ex31_3.sce b/3845/CH31/EX31.3/Ex31_3.sce new file mode 100644 index 000000000..2d89d117c --- /dev/null +++ b/3845/CH31/EX31.3/Ex31_3.sce @@ -0,0 +1,12 @@ +//Example 31.3
+format('v',11)
+m_parent=59.933819;//Atomic mass of parent nucleus (Co 60) (u), See Appendix A
+m_final=59.930788;//Final atomic mass of product of decay (Ni 60) (u), See Appendix A
+delta_m=m_parent-m_final;//Difference in mass (u)
+E=delta_m*931.5;//Energy emitted in decay (MeV)
+//E=delta_m*c^2, but 1 u=931.5MeV/c^2
+printf('Energy emitted in decay = %0.2f MeV',E)
+//There is a small variation in the values used in the textbook and the ones found in Appendix A
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest
+
diff --git a/3845/CH31/EX31.4/Ex31_4.sce b/3845/CH31/EX31.4/Ex31_4.sce new file mode 100644 index 000000000..4e2e62ad1 --- /dev/null +++ b/3845/CH31/EX31.4/Ex31_4.sce @@ -0,0 +1,9 @@ +//Example 31.4
+t_half=5730;//Half-life of Carbon-14 (y)
+lambda=0.693/t_half;//Decay constant (1/y)
+t=-log(0.92)/lambda;//Calculated age (y)
+//Above formula is obtained after mathematical simplification of Equation 31.38
+printf('The age of the Shroud of Turin = %0.1f years',t)
+//The answer varies due to round off error
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest
diff --git a/3845/CH31/EX31.5/Ex31_5.sce b/3845/CH31/EX31.5/Ex31_5.sce new file mode 100644 index 000000000..3084a88a3 --- /dev/null +++ b/3845/CH31/EX31.5/Ex31_5.sce @@ -0,0 +1,12 @@ +//Example 31.5
+N_C12=(6.02*10^23)/12*1000;//Number of carbon nuclei (C-12) in a kg
+N_C14=N_C12*(1.3*10^-12);//Number of carbon nuclei (C-14) in a kg
+t_half=5730;//Half-life of C-14 (y), See Appendix B
+R=0.693*N_C14/t_half;//Activity (y^-1 or decays per year)
+R=R*1/(3.16*10^7);//Activity (Bq or decays per second)
+printf('\nActivity R = %0.1f Bq',R)
+R=R/(3.7*10^10);//Activity (Ci)
+printf('\nActivity R = %0.2f nCi',R*10^9)
+//Answers vary due to round off error
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest
diff --git a/3845/CH31/EX31.6/Ex31_6.sce b/3845/CH31/EX31.6/Ex31_6.sce new file mode 100644 index 000000000..a3ed547e7 --- /dev/null +++ b/3845/CH31/EX31.6/Ex31_6.sce @@ -0,0 +1,11 @@ +//Example 31.6
+R=6*10^6;//Activity (Ci)
+t_half=30.17;//Half-life of Cs-137 (y),See Appendix B
+N=R*(3.7*10^10)*t_half*(3.16*10^7)/0.693;//Number of nuclei
+//In the above equation,curies are converted to becquerels and years to seconds by multiplying with (3.7*10^10 Bq/Ci) and (3.16*10^7s/y) respectively
+m=(137/(6.02*10^23))*(3.1*10^26);//Mass of Cs-137 released (g)
+printf('Mass of Cs-137 released = %0.1f kg',m/1000)
+//There is a small variation in the value used in the textbook and the one found in Appendix B
+//Answer varies due to round off error
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest
diff --git a/3845/CH31/EX31.7/Ex31_7.sce b/3845/CH31/EX31.7/Ex31_7.sce new file mode 100644 index 000000000..3a9ee9029 --- /dev/null +++ b/3845/CH31/EX31.7/Ex31_7.sce @@ -0,0 +1,17 @@ +//Example 32.7
+Z=2;//Number of protons
+N=2;//Number of neutrons
+m_He4=4.002603;//Atomic mass of nuclide (u), See Appendix A
+m_H1=1.007825;//Atomic mass of a hydrogen atom (u), See Appendix A
+m_n=1.008665;//Atomic mass of a neutron (u), See Appendix A
+BE={[Z*m_H1+N*m_n]-m_He4}*931.5;//Binding Energy (MeV)
+//To get the above equation,start with
+//BE=(delta_m*c^2) where,
+//delta_m={[Z*m_H1+N*m_n]-m_He4} is the mass defect (u) and c is speed of light (m/s)
+//and use the conversion 1u = 931.5MeV/c^2
+A=4;//Mass Number
+be=BE/A;//Binding energy per nucleon (MeV/nucleon);
+printf('Binding energy per nucleon of He-4 = %0.2f MeV/nucleon',be)
+//There is a small variation in the value of atomic mass of He-4 used in the textbook and the one found in Appendix A
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest
|