add/remove books

1 files changed, 0 insertions, 170 deletions

diff --git a/Engineering_Physics_/Chapter5.ipynb b/Engineering_Physics_/Chapter5.ipynb
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@@ -1,170 +0,0 @@
-{

- "metadata": {

-  "name": "",

-  "signature": "sha256:4126f9237f2a14d1c68d93136eb798698a28e20e098ed4ce42f02e377a8fbabb"

- },

- "nbformat": 3,

- "nbformat_minor": 0,

- "worksheets": [

-  {

-   "cells": [

-    {

-     "cell_type": "heading",

-     "level": 1,

-     "metadata": {},

-     "source": [

-      "5: Acoustics"

-     ]

-    },

-    {

-     "cell_type": "heading",

-     "level": 2,

-     "metadata": {},

-     "source": [

-      "Example number 5.1, Page number 97"

-     ]

-    },

-    {

-     "cell_type": "code",

-     "collapsed": false,

-     "input": [

-      "#importing modules\n",

-      "import math\n",

-      "from __future__ import division\n",

-      "\n",

-      "#Variable declaration\n",

-      "T1=1.5;     #R time for empty hall(s)\n",

-      "T2=1;       #R time with curtain cloth(s)\n",

-      "A=20;       #area of absorber(sq.m)\n",

-      "V=10*8*6;   #volume of hall(cu.m)\n",

-      "\n",

-      "#Calculation\n",

-      "a=((0.161*V)/(2*A))*((1/T2)-(1/T1));   #absorption coefficient\n",

-      "\n",

-      "#Result\n",

-      "print \"absorption coefficient is\",round(a,2),\"Sabines\"\n",

-      "print \"answer given in the book varies due to rounding off errors\""

-     ],

-     "language": "python",

-     "metadata": {},

-     "outputs": [

-      {

-       "output_type": "stream",

-       "stream": "stdout",

-       "text": [

-        "absorption coefficient is 0.64 Sabines\n",

-        "answer given in the book varies due to rounding off errors\n"

-       ]

-      }

-     ],

-     "prompt_number": 4

-    },

-    {

-     "cell_type": "heading",

-     "level": 2,

-     "metadata": {},

-     "source": [

-      "Example number 5.2, Page number 97"

-     ]

-    },

-    {

-     "cell_type": "code",

-     "collapsed": false,

-     "input": [

-      "#importing modules\n",

-      "import math\n",

-      "from __future__ import division\n",

-      "\n",

-      "#Variable declaration\n",

-      "V=20*15*10;    #volume of hall(cu.m)\n",

-      "T1=3.5;        #reverberation time(s)\n",

-      "l=20;        \n",

-      "b=15;\n",

-      "h=10;      #dimensions of hall\n",

-      "am=0.5;     #absorption coefficient\n",

-      "T2=2.5;    #reverberation time after cloth use(s)\n",

-      "\n",

-      "\n",

-      "#Calculation\n",

-      "A=(0.161*V)/T1; \n",

-      "S=2*((l*b)+(b*h)+(h*l));    #surface area(sq.m)\n",

-      "sigma_a=A/S;   #average absorption coefficient of hall(o.w.u)\n",

-      "S1=(((0.161*V)/(am-sigma_a))*((1/T2)-(1/T1)));     #area of wall covered by curtain cloth(sq.m)\n",

-      "\n",

-      "#Result\n",

-      "print \"average absorption coefficient of hall is\",round(sigma_a,3),\"o.w.u\"\n",

-      "print \"area of wall covered by curtain cloth is\",round(S1,3),\"sq.m\"\n",

-      "print \"answer for area covered S1 varies due to rounding off errors\""

-     ],

-     "language": "python",

-     "metadata": {},

-     "outputs": [

-      {

-       "output_type": "stream",

-       "stream": "stdout",

-       "text": [

-        "average absorption coefficient of hall is 0.106 o.w.u\n",

-        "area of wall covered by curtain cloth is 140.156 sq.m\n",

-        "answer for area covered S1 varies due to rounding off errors\n"

-       ]

-      }

-     ],

-     "prompt_number": 8

-    },

-    {

-     "cell_type": "heading",

-     "level": 2,

-     "metadata": {},

-     "source": [

-      "Example number 5.3, Page number 98"

-     ]

-    },

-    {

-     "cell_type": "code",

-     "collapsed": false,

-     "input": [

-      "#importing modules\n",

-      "import math\n",

-      "from __future__ import division\n",

-      "\n",

-      "#Variable declaration\n",

-      "V=1450;    #volume of hall(cu.m)\n",

-      "A1=112*0.03;   #absorption due to plastered wall\n",

-      "A2=130*0.06;   #absorption due to wooden floor\n",

-      "A3=170*0.04;   #absorption due to plastered ceiling\n",

-      "A4=20*0.06;    #absorption due to wooden door\n",

-      "A5=100*1;      #absorption due to cushioned chairs\n",

-      "\n",

-      "#Calculation\n",

-      "sigma_as=A1+A2+A3+A4+A5;   #total absorption in empty hall\n",

-      "T1=(0.161*V)/sigma_as;     #reverberation time case-1(s)\n",

-      "T2=(0.161*V)/(sigma_as+(60*4.7));   #persons=60,A=4.7 case-2\n",

-      "T3=(0.161*V)/(sigma_as+(100*4.7));  #seat cushioned=100 case-3\n",

-      "\n",

-      "#Result\n",

-      "print \"reverberation time for case-1 is\",round(T1,3),\"sec\"\n",

-      "print \"reverberation time for case-2 is\",round(T2,3),\"sec\"\n",

-      "print \"reverberation time for case-3 is\",round(T3,3),\"sec\"\n",

-      "print \"answer for T3 given in the book is wrong\""

-     ],

-     "language": "python",

-     "metadata": {},

-     "outputs": [

-      {

-       "output_type": "stream",

-       "stream": "stdout",

-       "text": [

-        "reverberation time for case-1 is 1.959 sec\n",

-        "reverberation time for case-2 is 0.582 sec\n",

-        "reverberation time for case-3 is 0.396 sec\n",

-        "answer for T3 given in the book is wrong\n"

-       ]

-      }

-     ],

-     "prompt_number": 12

-    }

-   ],

-   "metadata": {}

-  }

- ]

-}
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