Ch. 14 Homework, Phy 131, Fall 1997, Tulane

Note: ^ denotes power, eg. x^2 = x*x, i.e. x squared 
14.14  (a) 20 dB      (b) 100 dB

14.30  (a) 4.25 m     (b) 8.5 m

14.45  fmax = 529 Hz,  fmin = 474 Hz

14.50  d = v t = 340 *3 t / 3 = 1020 t /3 approx = t/3 km
       It's justified since the speed of light is much greater
       to cause any significant error.

13.65  87.8 dB
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