Your bedroom is 8.0 m away from the living room.

Your bedroom is 8.0 m away from the living room. When requested by your parents to turn down your stereo, you do, and the intensity level where they are sitting in the living room drops from 50 dB to 45 dB.

Part A

What is the change in the power of the sound emitted by your stereo?

P45dB−P50dB =