The intensity at the threshold of hearing for the human earat a frequency of about 1000 Hz is 1l, = 1.0 × 10-12 w /m²,for which B, the sound level, is 0 dB. The threshold of painat the same frequency is about 120 dB, or I = 1.0 W/m²,corresponding to an increase of intensity by a factor of 102.By what factor does the displacement amplitude, A, vary?

Intensity is given by, I=2π2ρvf2A2 From the above expression, I∝A2

Answered: The intensity at the threshold of…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter16: Waves

Section: Chapter Questions

Problem 87P: A 250-Hz tuning fork is struck and the intensity at the source is I1at a distance of one meter from...

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