A Howler Monkey Is the Loudest Land Animal And,under Some

question 31

Multiple Choice

A howler monkey is the loudest land animal and,under some circumstances,can be heard up to a distance of 5.0 km.Assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is .The acoustic power emitted by the howler is closest to

• A) 0.31 mW.
• B) 0.11 mW.
• C) 1.1 mW.
• D) 3.2 mW.
• E) 11 mW.

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