Author Question: The howler monkey is the loudest land animal and, under some circumstances, can be heard up to a ... (Read 73 times)

fox · **on:** Jul 29, 2018

The howler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 8.9 km. Assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 10-12 W/m2.

A juvenile howler monkey has an acoustic output of 63 W. What is the ratio of the acoustic intensity produced by the juvenile howler to the reference intensity I0, at a distance of 210 m? A) 110
B) 230
C) 76
D) 170
E) 300

Question 2

Write out the number 7.35 10-5 in full with a decimal point and correct number of zeros.

A) 0.00000735 B) 0.0000735 C) 0.000735 D) 0.00735 E) 0.0735