From df60071cf1d1c18822d34f943ab8f412a8946b69 Mon Sep 17 00:00:00 2001
From: hardythe1
Date: Wed, 3 Jun 2015 15:27:17 +0530
Subject: add books

---
 _A_Textbook_Of_Engineering_Physics/Chapter11.ipynb | 150 +++++++++++++++++++++
 1 file changed, 150 insertions(+)
 create mode 100755 _A_Textbook_Of_Engineering_Physics/Chapter11.ipynb

(limited to '_A_Textbook_Of_Engineering_Physics/Chapter11.ipynb')

diff --git a/_A_Textbook_Of_Engineering_Physics/Chapter11.ipynb b/_A_Textbook_Of_Engineering_Physics/Chapter11.ipynb
new file mode 100755
index 00000000..2ca36fdf
--- /dev/null
+++ b/_A_Textbook_Of_Engineering_Physics/Chapter11.ipynb
@@ -0,0 +1,150 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cb0c026235eca0bc18a695dcb9668ea4e2691af702577b5109cf13ded8d1630d"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter11-Architectural Acoustics"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex1-pg293"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "##Example 11.1\n",
+      "##calculation of total absorption and average absorption coefficient\n",
+      "\n",
+      "##given values\n",
+      "\n",
+      "V=20*15*5.;##volume of hall in m**3\n",
+      "t=3.5;##reverberation time of empty hall in sec\n",
+      "\n",
+      "\n",
+      "##calculation\n",
+      "a1=.161*V/t;##total absorption of empty hall\n",
+      "k=a1/(2.*(20*15+15*5+20*5.));\n",
+      "print'%s %.2f %s'%('the average absorption coefficient is',k,'');"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "the average absorption coefficient is 0.07 \n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex2-pg293"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "##Example 11.2\n",
+      "##calculation of average absorption coefficient\n",
+      "\n",
+      "##given values\n",
+      "\n",
+      "V=10*8.*6.;##volume of hall in m**3\n",
+      "t=1.5;##reverberation time of empty hall in sec\n",
+      "A=20.;##area of curtain cloth in m**2\n",
+      "t1=1.;##new reverberation time in sec\n",
+      "\n",
+      "##calculation\n",
+      "a1=.161*V/t;##total absorption of empty hall\n",
+      "a2=.161*V/t1;##total absorption after a curtain cloth is suspended\n",
+      "\n",
+      "k=(a2-a1)/(2.*20.);\n",
+      "print'%s %.2f %s'%('the average absorption coefficient is',k,'');\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "the average absorption coefficient is 0.64 \n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex3-pg293"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "##Example 11.3\n",
+      "##calculation of average absorption coefficient and area\n",
+      "\n",
+      "##given values\n",
+      "\n",
+      "V=20*15*10.;##volume of hall in m**3\n",
+      "t=3.5;##reverberation time of empty hall in sec\n",
+      "t1=2.5;##reduced reverberation time \n",
+      "k2=.5;##absorption coefficient of curtain cloth\n",
+      "##calculation\n",
+      "a1=.161*V/t;##total absorption of empty hall\n",
+      "k1=a1/(2*(20*15+15*10+20*10));\n",
+      "print'%s %.2f %s'%('the average absorption coefficient is',k1,'');\n",
+      "a2=.161*V/t1;##total absorption when wall is covered with curtain\n",
+      "a=t1*(a2-a1)/(t1*k2);\n",
+      "print'%s %.2f %s'%('area of wall to be covered with curtain(in m^2)is:',a,'')"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "the average absorption coefficient is 0.11 \n",
+        "area of wall to be covered with curtain(in m^2)is: 110.40 \n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
-- 
cgit