A speaker produces 100 (w) of power, If the speaker projects sound uniformly into the forward hemisphere, what is the intensity at 1m away from the speaker a) 15.92 w/ m² b) 3.98 w/ m? c) 1.77 w/ m² d) 1.00 w/ m² О 1. а O 2. d O 3. b O4. None O 5. C

A speaker produces 100 (w) of power, If the speaker projects sound uniformly into the forward hemisphere, what is the intensity at 1m away from the speaker a) 15.92 w/ m² b) 3.98 w/ m? c) 1.77 w/ m² d) 1.00 w/ m² О 1. а O 2. d O 3. b O4. None O 5. C

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 128P: An airplane moves at Mach 1.2 and produces a shock wave. (a) What is the speed of the plane in...

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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

A speaker produces 100 (w) of power, If the speaker projects sound uniformly
into the forward hemisphere, what is the intensity at 1m away from the speaker
a) 15.92 w/ m
m2
b) 3.98 w/ m?
c) 1.77 w/ m²
d) 1.00 w/ m²
O 1. a
O 2. d
O 3. b
O 4. None
O 5. c

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