STUDY GUIDE 2, SELF TEST 2

© Department of Physics, University of Guelph.

1. Find the intensity level of sound with the following intensities.
(a) 6.84X10-6 W/m2
(b) 45.6X10-14 W/m2

2. Find the intensity corresponding to the following:
(a) -18.0 db
(b) 118 db

3. Two sounds differ in intensity level by 105 db. What is the ratio of the intensities of the sounds?

4. What sound intensity level is produced when 3 identical loud speakers in a sound system are all switched on assuming that the intensity (W/m2 of each speaker alone is sufficient to produce an 80.0 db sound level. (Neglect interference effects.)

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