Ch. 14, 25 Exam Review 1) A tsunami, an ocean wave generated by ...
Ch. 14, 25 Exam Review 1) A tsunami, an ocean wave generated by ...
Ch. 14, 25 Exam Review 1) A tsunami, an ocean wave generated by ...
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6) The speed of sound through the ground is about 6.0 km/s while the speed of sound in<br />
air is 343 m/s. A very powerful explosion occurs some dist<strong>an</strong>ce away <strong>an</strong>d you feel the<br />
ground vibrate 45 seconds before you hear the sound of the explosion. How far away is<br />
the explosion?<br />
16 km<br />
7) A factory siren indicating the end of a shift has a frequency of 80 Hz. What frequency<br />
is perceived <strong>by</strong> the occup<strong>an</strong>t of a car traveling towards the factory at <strong>25</strong> m/s?<br />
86 Hz<br />
8) How does a sound of 60 decibels compare to a sound of 30 decibels?<br />
1000 times as intense, each 10 dB increase is a tenfold increase in intensity<br />
9) If the intensity level of one trombone is 50 dB, what is the intensity level of 56<br />
trombones?<br />
67 DB<br />
10) You drop a stone down a well that is 8.50 m deep. How long is it before you hear the<br />
splash?<br />
1.34 s
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