# Male Rana catesbeiana bullfrogs are known for their loud mating call. The call is

## Problem 33 Chapter 17

Fundamentals of Physics, Volume 2 (Chapters 21 - 44) | 10th Edition

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Fundamentals of Physics, Volume 2 (Chapters 21 - 44) | 10th Edition

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Problem 33

Male Rana catesbeiana bullfrogs are known for their loud mating call. The call is emitted not by the frogs mouth but by its eardrums, which lie on the surface of the head. And, surprisingly, the sound has nothing to do with the frogs inflated throat. If the emitted sound has a frequency of 260 Hz and a sound level of 85 dB (near the eardrum), what is the amplitude of the eardrums oscillation? The air density is 1.21 kg/m3 .

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