A sound wave has an intensity level of 125.4 dB in air. The density of air at 20.0°C is p = 1.20 kg/m³ (see Table 9.1). The speed of sound in air at 20.0°C is v= 343 m/s (see Table 12.1). What is the pressure amplitude of the wave? N/m²

A sound wave has an intensity level of 125.4 dB in air. The density of air at 20.0°C is p = 1.20 kg/m³ (see Table 9.1). The speed of sound in air at 20.0°C is v= 343 m/s (see Table 12.1). What is the pressure amplitude of the wave? N/m²

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter17: Sound

Section: Chapter Questions

Problem 50P: Dolphins make sounds in air and water. What is the ratio of the wavelength of a sound in air to its...

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Concept explainers

Interference of sound

Seiche

A seiche is an oscillating standing wave in a body of water. The term seiche pronounced saysh) can be understood by the sloshing of water back and forth in a swimming pool. The same phenomenon happens on a much larger scale in vast bodies of water including bays and lakes. A seizure can happen in any enclosed or semi-enclosed body of water.

Question

Week 3 #3

Required information
A sound wave has an intensity level of 125.4 dB in air. The density
of air at 20.0°C is p = 1.20 kg/m³ (see Table 9.1). The speed of
sound in air at 20.0°C is v= 343 m/s (see Table 12.1).
What is the pressure amplitude of the wave?
N/m²

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