IA-1 A speaker is sitting on level ground far from other objects. It produces a 400HZ tone with a sound outputpower of 7.50W.a) Find the intensity, pressure amplitude and displacement anmplitude of the sound waves 4.00m from thespeaker.b) Find the wavelength of these sound waves. AnswersIA-1 a) 0.0746W/m, Pm=8.13N/m, Sm7.30x10 mIA-2 a) pm=2.98x10 N/m, Sm-2.09x10mIA-3 Pm-2.98N/m", Sm 2.09x10°mIA-4 a) pm-1×10ʻN/m², k=15.7rad/m, o=5.39x10*rad/s b) Sm4.18x10 mc) Hints: What moves? Is sound a transverse or longitudinal wave?b) 0.858mb) pm-2.98x10 N/m², Sm=1.04x10llm

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A speaker is sitting on level ground far from other objects. It produces a 400HZ tone with a sound output power of 7.50W. a) Find the intensity, pressure amplitude and displacement amplitude of the sound waves 4.00m from the speaker. b) Find the wavelength of these sound waves.

A speaker is sitting on level ground far from other objects. It produces a 400HZ tone with a sound output power of 7.50W. a) Find the intensity, pressure amplitude and displacement amplitude of the sound waves 4.00m from the speaker. b) Find the wavelength of these sound waves.

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 68P: The amplitude of a sound wave is measured in terms of its maximum gauge pressure. By what factor...

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Concept explainers

Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.

Question

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IA-1 A speaker is sitting on level ground far from other objects. It produces a 400HZ tone with a sound output
power of 7.50W.
a) Find the intensity, pressure amplitude and displacement anmplitude of the sound waves 4.00m from the
speaker.
b) Find the wavelength of these sound waves.

Answers
IA-1 a) 0.0746W/m, Pm=8.13N/m, Sm7.30x10 m
IA-2 a) pm=2.98x10 N/m, Sm-2.09x10m
IA-3 Pm-2.98N/m", Sm 2.09x10°m
IA-4 a) pm-1×10ʻN/m², k=15.7rad/m, o=5.39x10*rad/s b) Sm4.18x10 m
c) Hints: What moves? Is sound a transverse or longitudinal wave?
b) 0.858m
b) pm-2.98x10 N/m², Sm=1.04x10llm

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