The sound level at a distance d328 m from a loudspeaker is 70 dB. What is the power (in Watt) at which sound energy is being produced by the loudspeaker?. The threshold of hearing, lo = 1*10-12 W/m². %3D

The sound level at a distance d328 m from a loudspeaker is 70 dB. What is the power (in Watt) at which sound energy is being produced by the loudspeaker?. The threshold of hearing, lo = 1*10-12 W/m². %3D

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

The sound level at a distance d328 m from a loudspeaker is 70 dB. What is the power (in Watt) at which
sound energy is being produced by the loudspeaker?. The threshold of hearing, lo
1*10-12 W/m2.
A. None
B. 0.3139
C. 0.4125
D. 0.3942
E. 0.09855
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