Solved

Sound Level: a Sound Source Emits 20

Question 68

Multiple Choice

Sound level: A sound source emits 20.0 W of acoustical power spread equally in all directions. The threshold of hearing is 1.0 × 10-12 W/m2. What is the sound intensity level 30.0 m from the source?


A) 92.5 dB
B) 81.5 dB
C) 1.77 × 10-3 dB
D) 1.77 × 10-3 W
E) -27.5 dB

Correct Answer:

verifed

Verified

Unlock this answer now
Get Access to more Verified Answers free of charge

Related Questions

Q63: Beats: A person is hearing two sound

Q64: Mathematics of traveling waves: For the wave

Q65: Doppler effect: A bat emits a sound

Q66: Interference: The sound from a single source

Q67: Sound level: The howler monkey is the

Q69: Standing sound waves: A violin with string

Q70: Doppler effect: A policeman in a stationary

Q71: Sound level: A howler monkey is the

Q72: Shock waves: A jet aircraft, in level

Q73: Interference: Two loudspeakers placed 6.0 m apart