(7) A safety engineer working in a large industrial plant
measures the noise intensity at a
machining center as 10-4 W / m2. Using another sound meter, the same analyst measures the effective sound pressure at another machining center as 0.633 Pa.
a. Convert the intensity and pressure readings for the two machines to decibels (dB). (Do not use a look-up table; make an exact calculation.)
b. Calculate the absolute difference in worker noise exposure among the two centers in terms of decibels.
c. Perceptually speaking, what is the difference in the experience of noise at the two machining centers for a worker?
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