Stereo speakers: for the relationship between the decibel scale and relative intensity of sound. a. In this part assume that four stereo speakers, each producing 40 decibels, are placed side by side,...

Stereo speakers: for the relationship between the decibel scale and relative intensity of sound.

a. In this part assume that four stereo speakers, each producing 40 decibels, are placed side by side, multiplying by a factor of 4 the relative intensity of sound produced by only one of the speakers. What is the decibel level of the four speakers together?

b. Find an exponential formula giving relative intensity I as a function of decibel level D.

c. What is the growth factor for relative intensity as an exponential function of decibels? Reminder: