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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:e51408600d11e929cd24c31057edae00d199336d2c2b7260dda7e3b7642c128f"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 3 : Conservation Principle of Mass"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 3.3 Page No : 100"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math \n",
+      "\t\t\t\n",
+      "#Initialization of variables\n",
+      "d1 = 60. \t\t\t#diameter of a section of pipe - cm\n",
+      "V1 = 45. \t\t\t#velocity of water - cm/s\n",
+      "d2 = 90. \t\t\t#diameter of enlarged section - cm\n",
+      "\t\t\t\n",
+      "#calculations\n",
+      "V2 = V1*d1**2 /d2**2\n",
+      "Q = math.pi/4 *d1**2 *V1 *10**-6\n",
+      "\t\t\t\n",
+      "#results\n",
+      "print \"Velocity at point 2  =  %d cm/s\"%(V2)\n",
+      "print \" FLow rate  =  %.4f m**3/s\"%(Q)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Velocity at point 2  =  20 cm/s\n",
+        " FLow rate  =  0.1272 m**3/s\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 3.4 Page No : 100"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\t\t\t\n",
+      "#Initialization of variables\n",
+      "dn1 = 4 \t\t\t#spacing between streamlines - cm\n",
+      "v1 = 300. \t\t\t#velocity - cm/s\n",
+      "dn2 = 2.5 \t\t\t#spacing - cm\n",
+      "\t\t\t\n",
+      "#calculations\n",
+      "v2 = v1*dn1/dn2\n",
+      "\t\t\t\n",
+      "#results\n",
+      "print \"Velocity  =  %.1f m/s\"%(v2/100)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Velocity  =  4.8 m/s\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file