initial commit / add all books

10 files changed, 182 insertions, 0 deletions

diff --git a/3753/CH3/EX3.1/Ex3_1.sce b/3753/CH3/EX3.1/Ex3_1.sce
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+//Example number 3.1, Page number 3.32
+
+// importing modules
+clc;clear;close
+
+// Variable declaration
+V=2265 // m^3
+A=92.9 // Coefficient
+x=2               // The absorption become 2*A of open window
+
+// Calculation
+T=(0.16*V)/A      // Sabine's formula  
+T2=(0.16*V)/(x*A) // in s
+
+// Result
+printf("Reverbration time = %0.1f s",T)
+printf("\nFinal Reverbration time = %0.2f s",T2)
+printf("\nThus the reverbration time is reduced to one-half of its initial value")
diff --git a/3753/CH3/EX3.10/Ex3_10.sce b/3753/CH3/EX3.10/Ex3_10.sce
new file mode 100644
index 000000000..99e2fda8a
--- /dev/null
+++ b/3753/CH3/EX3.10/Ex3_10.sce
@@ -0,0 +1,20 @@
+//Example number 3.10, Page number 3.35
+
+
+clc;clear;close
+
+// Variable declaration
+H0=6.5*10**4           // (ampere/metre)
+T=4.2                  // K
+Tc=7.18                // K
+r=0.5*10**-3
+
+// Calculations
+Hc=H0*(1-(T/Tc)**2) // unitless
+Ic=(2*%pi*r)*Hc // A
+A=%pi*r**2 // m^2
+Jc=Ic/A                // Critical current density
+
+// Result
+printf("Hc = %0.4e",Hc)
+printf("\nCritical current density,Jc = %0.2e ampere/metre^2",Jc)
diff --git a/3753/CH3/EX3.11/Ex3_11.sce b/3753/CH3/EX3.11/Ex3_11.sce
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index 000000000..eb34a609c
--- /dev/null
+++ b/3753/CH3/EX3.11/Ex3_11.sce
@@ -0,0 +1,14 @@
+//Example number 3.11, Page number 6.36
+
+clc;clear;close
+
+// Variable declaration
+Tc1=4.185 // K
+M1=199.5// unitless
+M2=203.4// unitless
+
+// Calculations
+Tc2=Tc1*(M1/M2)**(1/2) // in K
+
+// Result
+printf("New critical temperature for mercury = %0.3f K",Tc2)
diff --git a/3753/CH3/EX3.2/Ex3_2.sce b/3753/CH3/EX3.2/Ex3_2.sce
new file mode 100644
index 000000000..056b73d6c
--- /dev/null
+++ b/3753/CH3/EX3.2/Ex3_2.sce
@@ -0,0 +1,30 @@
+//Example number 3.2, Page number 3.32
+
+
+clc;clear;close
+
+// Variable declaration
+a1=450    // Area of plastered wall
+a2=360    // Area of wooden floor and wooden doors
+a3=24     // Area of Glass
+a4=600    // Area of seats
+a5=500    // Area of audience when they are in seats
+c1=0.03   // Coefficient of absorption of plastered wall
+c2=0.06   // Coefficient of absorption of wooden floor and wooden doors
+c3=0.025   // Coefficient of absorption of Glass
+c4=0.3    // Coefficient of absorption of seats
+c5=0.43   // Coefficient of absorption of audience when they are in seats
+l=12 // in m
+b=30 // in m
+h=6 // in m
+
+// Calculation
+V=l*b*h        // volume of the hall
+A=(a1*c1)+(a2*c2)+(a3*c3)+(a4*c4)+(a5*c5)  // Total absorption
+T=(0.16*V)/A   // Reverbration time
+
+// Result
+printf("Volume of the hall = %.f m^3",V)
+printf("\nTotal absorption = %0.1f m^2",A)
+printf("\nReverbration time = %0.1f second",T)
+// Answer given for the Reverbration time in the text book is wrong
diff --git a/3753/CH3/EX3.3/Ex3_3.sce b/3753/CH3/EX3.3/Ex3_3.sce
new file mode 100644
index 000000000..dbb482907
--- /dev/null
+++ b/3753/CH3/EX3.3/Ex3_3.sce
@@ -0,0 +1,14 @@
+//Example number 3.3, Page number 3.33
+
+
+clc;clear;close
+
+// Variable declaration
+T=1.2 // in s
+V=7500 // in m^3
+
+// Calculation
+A=(0.16*V)/T // in m^2
+
+// Result
+printf("Total absorpttion = %.f m**2 of O.W.U.",A)
diff --git a/3753/CH3/EX3.4/Ex3_4.sce b/3753/CH3/EX3.4/Ex3_4.sce
new file mode 100644
index 000000000..d5c9d033c
--- /dev/null
+++ b/3753/CH3/EX3.4/Ex3_4.sce
@@ -0,0 +1,18 @@
+//Example number 3.4, Page number 3.34
+
+clc;clear;close
+
+// Variable declaration
+V=12*10**4 // in m^3
+A=13200 // in m^2
+x=2               // The absorption become 2*A of open window
+
+// Calculation
+T1=(0.16*V)/A      // Sabine's formula  
+T2=(0.16*V)/(x*A) // in s
+Td=T1-T2 // in s
+
+// Result
+printf("T1 = %0.2f second",T1)
+printf("\nT2 = %0.2f second",T2)
+printf("\nChange in Reverbration time = %0.3f second",Td)
diff --git a/3753/CH3/EX3.6/Ex3_6.sce b/3753/CH3/EX3.6/Ex3_6.sce
new file mode 100644
index 000000000..3b8d82ce9
--- /dev/null
+++ b/3753/CH3/EX3.6/Ex3_6.sce
@@ -0,0 +1,15 @@
+//Example number 3.6, Page number 3.34
+
+
+clc;clear;close
+
+// Variable declaration
+H0=64*10**3;    // initial field(ampere/m)
+T=5;    // temperature(K)
+Tc=7.26;   // transition temperature(K)
+
+// Calculation
+H=H0*(1-(T/Tc)**2);     // critical field(ampere/m)
+
+// Result
+printf("critical field is : %0.3e ampere/m",H)
diff --git a/3753/CH3/EX3.7/Ex3_7.sce b/3753/CH3/EX3.7/Ex3_7.sce
new file mode 100644
index 000000000..4482d379e
--- /dev/null
+++ b/3753/CH3/EX3.7/Ex3_7.sce
@@ -0,0 +1,14 @@
+//Example number 3.7, Page number 3.34
+
+clc;clear;close
+
+// Variable declaration
+e=1.6*10**-19 // eV
+V=1*10 // in m^3
+h=6.625*10**-34
+
+// Calculations
+v=(2*e*V**-3)/h // Hz
+
+// Result
+printf("Frequency of generated microwaves = %.2e Hz",v)
diff --git a/3753/CH3/EX3.8/Ex3_8.sce b/3753/CH3/EX3.8/Ex3_8.sce
new file mode 100644
index 000000000..2823b104a
--- /dev/null
+++ b/3753/CH3/EX3.8/Ex3_8.sce
@@ -0,0 +1,22 @@
+//Example number 3.8, Page number 3.34
+
+clc;clear;close
+
+// Variable declaration
+d=7300                  // density in (kg/m**3)
+N=6.02*10**26           // Avagadro Number
+A=118.7                 // Atomic Weight
+E=1.9                 // Effective mass
+e=1.6*10**-19
+
+// Calculations
+n=(d*N)/A // no. of electrons
+m=E*9.1*10**-31 // in kg
+x=4*%pi*10**-7*n*e**2 // in kg/m^2
+lamda_L=sqrt(m/x) // in m
+      
+// Result
+printf("Number of electrons per unit volume = %0.1e per m^3",n)
+printf("\nEffective mass of electron ''m*'' = %0.2e kg",m)
+printf("\nPenetration depth = %0.5f Angstroms",(lamda_L*10**8))
+// The answer given in the text book is wrong
diff --git a/3753/CH3/EX3.9/Ex3_9.sce b/3753/CH3/EX3.9/Ex3_9.sce
new file mode 100644
index 000000000..42e6f5261
--- /dev/null
+++ b/3753/CH3/EX3.9/Ex3_9.sce
@@ -0,0 +1,17 @@
+//Example number 3.9, Page number 3.35
+
+
+clc;clear;close
+
+// Variable declaration
+lamda_L1=39.6*10**-9 // in m
+lamda_L2=173*10**-9 // in m
+T1=7.1 // in s
+T2=3 // in s
+
+// Calculations
+x=(lamda_L1/lamda_L2)**2 // in kg/m^2
+Tc4=(T1**4)-((T2**4)*x)/(1-x) // in K
+Tc=(Tc4)**(1/4) // in K
+printf("Tc = %0.4f K",Tc)
+printf("\nlamda0 = %.f nm",round((sqrt(1-(T2/Tc)**4)*lamda_L1)*10**9))