Added(A)/Deleted(D) following books

 A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter26.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter27.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter28.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter29.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter30.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter31.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter33.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter34.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter35.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter36.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter37.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter38.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter39.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter40.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter41.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter42.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter43.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter44.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter45.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter46.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter47.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/Chapter48.ipynb
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/screenshots/Chapter_37.png
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/screenshots/Chapter_38.png
A  Physics-_For_Students_Of_Science_And_Engineering(Part_2)_by_D._Halliday_and_R._Resnick/screenshots/Chapter_39.png
A  sample_notebooks/PraveenKumar/chapter1.ipynb
A  sample_notebooks/PreetiRani/ch4.ipynb
A  sample_notebooks/SPANDANAARROJU/Chapter5.ipynb
A  sample_notebooks/SundeepKatta/Chapter7.ipynb

1 files changed, 480 insertions, 0 deletions

diff --git a/sample_notebooks/SPANDANAARROJU/Chapter5.ipynb b/sample_notebooks/SPANDANAARROJU/Chapter5.ipynb
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--- /dev/null
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@@ -0,0 +1,480 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# 5: Uncertainity Principle"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 1, Page number 177"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "uncertainity in momentum is 1.65e-24 kg m/sec\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration  \n",
+    "h=6.6*10**-34;      #plancks constant(J s)\n",
+    "deltax=4*10**-10;   #uncertainity(m)\n",
+    "\n",
+    "#Calculations\n",
+    "delta_px=h/deltax;    #uncertainity in momentum(kg m/sec)\n",
+    "\n",
+    "#Result\n",
+    "print \"uncertainity in momentum is\",delta_px,\"kg m/sec\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 2, Page number 177"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "uncertainity in position is 0.02418 m\n",
+      "answer given in the book is wrong\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration  \n",
+    "h=6.6*10**-34;      #plancks constant(J s)\n",
+    "m=9.1*10**-31;      #mass(kg)\n",
+    "v=600;              #speed(m/s)\n",
+    "deltapx=(0.005/100)*m*v;  #uncertainity in momentum(kg m/sec)\n",
+    "\n",
+    "#Calculations\n",
+    "deltax=h/deltapx;    #uncertainity in position(m)\n",
+    "\n",
+    "#Result\n",
+    "print \"uncertainity in position is\",round(deltax,5),\"m\"\n",
+    "print \"answer given in the book is wrong\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 3, Page number 177"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "uncertainity in momentum is 6.63e-23 kg m/sec\n",
+      "uncertainity in velocity is 7.286 *10**7 m/sec\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration  \n",
+    "h=6.63*10**-34;      #plancks constant(J s)\n",
+    "deltax=0.1*10**-10;   #uncertainity(m)\n",
+    "m0=9.1*10**-31;      #mass(kg)\n",
+    "\n",
+    "#Calculations\n",
+    "deltap=h/deltax;    #uncertainity in momentum(kg m/sec)\n",
+    "deltav=deltap/m0;   #uncertainity in velocity(m/sec) \n",
+    "\n",
+    "#Result\n",
+    "print \"uncertainity in momentum is\",deltap,\"kg m/sec\"\n",
+    "print \"uncertainity in velocity is\",round(deltav/10**7,3),\"*10**7 m/sec\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 4, Page number 178"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "uncertainity in velocity is 1835\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration  \n",
+    "me=9.1*10**-31;      #mass of electron(kg)\n",
+    "mp=1.67*10**-27;      #mass of proton(kg)\n",
+    "\n",
+    "#Calculations\n",
+    "deltavebydeltavp=mp/me;    #uncertainity in velocity\n",
+    "\n",
+    "#Result\n",
+    "print \"uncertainity in velocity is\",int(deltavebydeltavp)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 5, Page number 178"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "smallest possible uncertainity in position is 0.0388 angstrom\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration  \n",
+    "h=6.62*10**-34;      #plancks constant(J s)\n",
+    "v=3*10**7;           #velocity(m/sec)\n",
+    "c=3*10**8;           #velocity of light(m/sec)\n",
+    "m0=9*10**-31;        #mass(kg)\n",
+    "\n",
+    "#Calculations\n",
+    "deltaxmin=h*math.sqrt(1-(v**2/c**2))/(2*math.pi*m0*v);   #smallest possible uncertainity in position(m)\n",
+    "\n",
+    "#Result\n",
+    "print \"smallest possible uncertainity in position is\",round(deltaxmin*10**10,4),\"angstrom\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 6, Page number 179"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 14,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "minimum uncertainity in velocity is 7.3 *10**5 m/s\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration  \n",
+    "h=6.6*10**-34;      #plancks constant(J s)\n",
+    "deltapmax=10**-9;   #uncertainity in momentum(kg m/sec)\n",
+    "m=9*10**-31;        #mass(kg)\n",
+    "\n",
+    "#Calculations\n",
+    "deltapmin=h/deltapmax;   #smallest possible uncertainity in momentum(kg m/sec)\n",
+    "deltavxmin=deltapmin/m;  #minimum uncertainity in velocity(m/s) \n",
+    "\n",
+    "#Result\n",
+    "print \"minimum uncertainity in velocity is\",round(deltavxmin/10**5,1),\"*10**5 m/s\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 7, Page number 179"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 16,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "time required is 1.9 *10**-8 second\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration  \n",
+    "c=3*10**8;           #velocity of light(m/sec)\n",
+    "lamda=6000*10**-10;  #wavelength(m)\n",
+    "dlamda=10**-4*10**-10;    #width(m)\n",
+    "\n",
+    "#Calculations\n",
+    "deltat=lamda**2/(2*math.pi*c*dlamda);     #time required(second)\n",
+    "\n",
+    "#Result\n",
+    "print \"time required is\",round(deltat*10**8,1),\"*10**-8 second\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 8, Page number 180"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 20,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "uncertainity in position is 3.381 *10**-6 m\n",
+      "answer given in the book varies due to rounding off errors\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration  \n",
+    "h=6.63*10**-34;      #plancks constant(J s)\n",
+    "m=9.1*10**-31;      #mass(kg)\n",
+    "v=3.5*10**5;              #speed(m/s)\n",
+    "deltap=(0.0098/100)*m*v;  #uncertainity in momentum(kg m/sec)\n",
+    "\n",
+    "#Calculations\n",
+    "deltax=h/(2*math.pi*deltap);    #uncertainity in position(m)\n",
+    "\n",
+    "#Result\n",
+    "print \"uncertainity in position is\",round(deltax*10**6,3),\"*10**-6 m\"\n",
+    "print \"answer given in the book varies due to rounding off errors\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 9, Page number 180"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 30,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "uncertainity in momentum is 5.276 *10**-20 kg m/sec\n",
+      "kinetic energy of electron is 9559.1 MeV\n",
+      "answer for kinetic energy given in the book is wrong\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration  \n",
+    "h=6.63*10**-34;      #plancks constant(J s)\n",
+    "m0=9.1*10**-31;      #mass(kg)\n",
+    "deltax=2*10**-15;    #uncertainity in position(m)\n",
+    "e=1.6*10**-19;       #charge(coulomb)\n",
+    "\n",
+    "#Calculations\n",
+    "deltap=h/(2*math.pi*deltax);    #uncertainity in momentum(kg m/sec)\n",
+    "K=deltap**2/(2*m0*e);           #kinetic energy of electron(eV)\n",
+    "\n",
+    "#Result\n",
+    "print \"uncertainity in momentum is\",round(deltap*10**20,3),\"*10**-20 kg m/sec\"\n",
+    "print \"kinetic energy of electron is\",round(K/10**6,1),\"MeV\"\n",
+    "print \"answer for kinetic energy given in the book is wrong\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 10, Page number 180"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 35,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "minimum uncertainity in momentum is 1.05e-20 kg m/sec\n",
+      "minimum kinetic energy is 2.06 *10**5 eV\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration  \n",
+    "chi=1.05*10**-34;      #plancks constant(J s)\n",
+    "deltaxmax=2*5*10**-15; #uncertainity in momentum(kg m/sec)\n",
+    "m=1.67*10**-27;        #mass(kg)\n",
+    "e=1.6*10**-19;       #charge(coulomb)\n",
+    "\n",
+    "#Calculations\n",
+    "deltapmin=chi/deltaxmax;      #minimum uncertainity in momentum(kg m/sec)\n",
+    "Emin=deltapmin**2/(2*m*e);      #minimum kinetic energy(eV)\n",
+    "\n",
+    "#Result\n",
+    "print \"minimum uncertainity in momentum is\",deltapmin,\"kg m/sec\"\n",
+    "print \"minimum kinetic energy is\",round(Emin/10**5,2),\"*10**5 eV\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 11, Page number 181"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 37,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "angular orbital position is 10 radian\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration  \n",
+    "e=5/100;           #error\n",
+    "h=1;               #assume\n",
+    "\n",
+    "#Calculations\n",
+    "deltaJ=e*2*h;      #uncertainity in angular momentum\n",
+    "delta_theta=h/deltaJ;     #angular orbital position(radian)\n",
+    "\n",
+    "#Result\n",
+    "print \"angular orbital position is\",int(delta_theta),\"radian\""
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.11"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}