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 --- 446/CH10/EX10.1/10_1.sce | 9 +++++++++ 446/CH10/EX10.1/10_1.txt | 6 ++++++ 446/CH10/EX10.2/10_2.sce | 7 +++++++ 446/CH10/EX10.2/10_2.txt | 4 ++++ 446/CH10/EX10.3/10_3.sce | 11 +++++++++++ 446/CH10/EX10.3/10_3.txt | 6 ++++++ 446/CH10/EX10.4/10_4.sce | 9 +++++++++ 446/CH10/EX10.4/10_4.txt | 6 ++++++ 446/CH10/EX10.5/10_5.sce | 8 ++++++++ 446/CH10/EX10.5/10_5.txt | 3 +++ 10 files changed, 69 insertions(+) create mode 100755 446/CH10/EX10.1/10_1.sce create mode 100755 446/CH10/EX10.1/10_1.txt create mode 100755 446/CH10/EX10.2/10_2.sce create mode 100755 446/CH10/EX10.2/10_2.txt create mode 100755 446/CH10/EX10.3/10_3.sce create mode 100755 446/CH10/EX10.3/10_3.txt create mode 100755 446/CH10/EX10.4/10_4.sce create mode 100755 446/CH10/EX10.4/10_4.txt create mode 100755 446/CH10/EX10.5/10_5.sce create mode 100755 446/CH10/EX10.5/10_5.txt (limited to '446/CH10') diff --git a/446/CH10/EX10.1/10_1.sce b/446/CH10/EX10.1/10_1.sce new file mode 100755 index 000000000..8a529803b --- /dev/null +++ b/446/CH10/EX10.1/10_1.sce @@ -0,0 +1,9 @@ +clear +clc +disp('Exa-10.1'); //Theoretical Question +//**Install and use maxim tool for symbolic integration. remove the '//'(comment markings) below and run the program. +//Vm=integrate('(v^3)*(e^(-b*v^2))','x',0,%infi); +//rest of the results follow from above +printf('The average speed is found out to be (8*k*T/m)^1/2)\n'); +printf('The RMS speed is (3*k*T/m)^1/2\n'); +printf('The Most probable speed is found out to be (2*k*T/m)^1/2 \n where all the symbols used are conventional constants.'); \ No newline at end of file diff --git a/446/CH10/EX10.1/10_1.txt b/446/CH10/EX10.1/10_1.txt new file mode 100755 index 000000000..c7282c8ab --- /dev/null +++ b/446/CH10/EX10.1/10_1.txt @@ -0,0 +1,6 @@ + + Exa-10.1 +The average speed is found out to be (8*k*T/m)^1/2) +The RMS speed is (3*k*T/m)^1/2 +The Most probable speed is found out to be (2*k*T/m)^1/2 + where all the symbols used are conventional constants. \ No newline at end of file diff --git a/446/CH10/EX10.2/10_2.sce b/446/CH10/EX10.2/10_2.sce new file mode 100755 index 000000000..ec45c4f77 --- /dev/null +++ b/446/CH10/EX10.2/10_2.sce @@ -0,0 +1,7 @@ +clear +clc +disp('Exa-10.2'); //The solution is purely theoretical and involves a lot of approximations. +printf('The value of shift in frequency was found out to be delf=7.14*fo*10^-7*sqrt(T) for a star composing of hydrogen atoms at a temperature T.\n'); +T=6000; //temperature for sun +delf=7.14*10^-7*sqrt(T);.....//change in frequency +printf('The value of frequency shift for sun(at 6000 deg. temperature) comprsing of hydrogen atoms is %.1e times the frequency of the light.',delf); \ No newline at end of file diff --git a/446/CH10/EX10.2/10_2.txt b/446/CH10/EX10.2/10_2.txt new file mode 100755 index 000000000..b2a0199b3 --- /dev/null +++ b/446/CH10/EX10.2/10_2.txt @@ -0,0 +1,4 @@ + + Ex-10.2 +The value of shift in frequency was found out to be delf=7.14*fo*10^-7*sqrt(T) for a star composing of hydrogen atoms at a temperature T. +The value of frequency shift for sun(at 6000 deg. temperature) comprsing of hydrogen atoms is 5.5e-005 times the frequency of the light. \ No newline at end of file diff --git a/446/CH10/EX10.3/10_3.sce b/446/CH10/EX10.3/10_3.sce new file mode 100755 index 000000000..99f25d0df --- /dev/null +++ b/446/CH10/EX10.3/10_3.sce @@ -0,0 +1,11 @@ +clear +clc +disp('Exa-10.3(a)'); +kT=0.0252;E=10.2 // at room temperature, kT=0.0252 standard value and given value of E +n2=2;n1=1; g2=2*(n2^2);g1=2*(n1^2); //values for ground and excited states +t=(g2/g1)*%e^(-E/kT); //fraction of atoms +printf('The number of hydrogen atoms required is %e which weighs %e Kg\n',1/t,(1/t)*(1.67*10^-27)); +disp('Ex-10.3(b)'); +t=0.1/0.9;k=8.65*10^-5 //fracion of atoms in case-2 is given +T=-E/(log(t/(g2/g1))*k); //temperature +printf('The value of temperature at which 1/10 atoms are in excited state is %.3f K',T); diff --git a/446/CH10/EX10.3/10_3.txt b/446/CH10/EX10.3/10_3.txt new file mode 100755 index 000000000..288debed4 --- /dev/null +++ b/446/CH10/EX10.3/10_3.txt @@ -0,0 +1,6 @@ + + Exa-10.3(a) +The number of hydrogen atoms required is 1.526869e+175 which weighs 2.549871e+148 Kg + + Ex-10.3(b) +The value of temperature at which 1/10 atoms are in excited state is 32905.944 K \ No newline at end of file diff --git a/446/CH10/EX10.4/10_4.sce b/446/CH10/EX10.4/10_4.sce new file mode 100755 index 000000000..7a18c6757 --- /dev/null +++ b/446/CH10/EX10.4/10_4.sce @@ -0,0 +1,9 @@ +clear +clc +disp('Exa-10.4(a)'); //theoretical +printf('The energy of interaction with magnetic field is given by uB and the degeneracy of the states are +-1/2 which are identical.\nThe ratio is therefore pE2/pE1 which gives e^(-2*u*B/k*T)'); +disp('Ex-10.4(b)'); +uB=5.79*10^-4; //for a typical atom +t=1.1;k=8.65*10^-5; //ratio and constant k +T=2*uB/(log(t)*k); //temperature +printf('The value of temperature ar which the given ratio exists is %.2f K',T); diff --git a/446/CH10/EX10.4/10_4.txt b/446/CH10/EX10.4/10_4.txt new file mode 100755 index 000000000..874081af3 --- /dev/null +++ b/446/CH10/EX10.4/10_4.txt @@ -0,0 +1,6 @@ + + Exa-10.4(a) +The energy of interaction with magnetic field is given by uB and the degeneracy of the states are +-1/2 which are identical. +The ratio is therefore pE2/pE1 which gives e^(-2*u*B/k*T) + Ex-10.4(b) +The value of temperature ar which the given ratio exists is 140.46 K \ No newline at end of file diff --git a/446/CH10/EX10.5/10_5.sce b/446/CH10/EX10.5/10_5.sce new file mode 100755 index 000000000..ef6131ac4 --- /dev/null +++ b/446/CH10/EX10.5/10_5.sce @@ -0,0 +1,8 @@ +clear +clc +disp('Exa-10.5'); +p=0.971; A=6.023*10^23; m=23.0; // various given values and constants +c= (p*A/m)*10^6; // atoms per unit volume +hc=1240; mc2=0.511*10^6; // hc=1240 eV.nm +E= ((hc^2)/(2*mc2))*(((3/(8*%pi))*c)^(2/3)); //value of fermi energy +printf('The fermi energy for sodium is %f eV',E*10^-18);//multiply by 10^-18 to convert metres^2 term to nm^2 diff --git a/446/CH10/EX10.5/10_5.txt b/446/CH10/EX10.5/10_5.txt new file mode 100755 index 000000000..f82bd11c6 --- /dev/null +++ b/446/CH10/EX10.5/10_5.txt @@ -0,0 +1,3 @@ + + Exa-10.5 +The fermi energy for sodium is 3.15 eV \ No newline at end of file -- cgit