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phy141:examprep:final11sols [2014/12/01 19:21]
mdawber
phy141:examprep:final11sols [2014/12/05 13:05] (current)
mdawber [Q6 (Ave Score: 22.1/25)]
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 c) To get node at each ear the wavelength must be halved, hence frequency is doubled, $f=1650\mathrm{Hz}$ c) To get node at each ear the wavelength must be halved, hence frequency is doubled, $f=1650\mathrm{Hz}$
  
-d) The answer I wanted (many others were accepted...) was based on the fact that distance to the point from each speaker would be 0.6mcompared to Rudolf who stands ​0.5 m from each speaker +d) Another half wavelength, 0.2m in front of his ears/nose.
- +
-$d=\sqrt{0.6^{2}-0.5^{2}}=0.33\mathrm{m}$ +
 ===== Q7 (Ave Score: 19.2/25) ===== ===== Q7 (Ave Score: 19.2/25) =====
  
phy141/examprep/final11sols.txt · Last modified: 2014/12/05 13:05 by mdawber
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