The intensity level is 65 dB at a distance 5.00 m from a barking dog.What would be a reasonable estimate for the intensity level if two identical dogs very close to each other were barking? You can ignore any interference effects.
A)65 dB
B)68 dB
C)130 dB
D)136 dB

Question

Quizplus · Accepted Answer

When two identical sources of sound, like two barking dogs, are combined, the intensity level increases by 10*log10(2) = 3 dB. Therefore, if one dog produces a sound level of 65 dB, two dogs would produce a sound level of 65 dB + 3 dB = 68 dB.

The Intensity Level Is 65 DB at a Distance 5