The power output of a certain public address speaker is 6.00 W. Suppose it broadcasts equally in
Question:
(a) Within what distance from the speaker would the sound be painful to the ear?
(b) At what distance from the speaker would the sound be barely audible?
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a b 120 dB 10 dB log I100 Wm 1 I 1012 Wm 80 4r 80 60...View the full answer
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Related Book For 
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
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