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{
"metadata": {
"name": "Chapter17"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
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"cells": [
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"cell_type": "heading",
"level": 1,
"metadata": {},
"source": "17: Ultrasonics"
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": "Example number 17.1, Page number 352"
},
{
"cell_type": "code",
"collapsed": false,
"input": "#To calculate the thickness of vibrating quartz\n\n#importing modules\nimport math\nfrom __future__ import division\n\n#Variable declaration\nf = 3; #Fundamental vibrational frequency of quartz crystal(MHz)\nY = 7.9*10**10; #Young's modulus of quartz(N/m**2)\nrho = 2650; #Density of quartz(kg/m**3)\n\n#Calculation\nf = f*10**6; #Fundamental vibrational frequency of quartz crystal(Hz)\nl = 1/(2*f)*math.sqrt(Y/rho); #Thickness of vibrating quartz at resonance(m)\nl = l*10**3; #Thickness of vibrating quartz at resonance(mm)\nl = math.ceil(l*100)/100; #rounding off the value of l to 2 decimals\n\n#Result\nprint \"The thickness of vibrating quartz at resonance is\",l, \"mm\"",
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": "The thickness of vibrating quartz at resonance is 0.91 mm\n"
}
],
"prompt_number": 1
},
{
"cell_type": "code",
"collapsed": false,
"input": "",
"language": "python",
"metadata": {},
"outputs": []
}
],
"metadata": {}
}
]
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|
