# Chapter 14 - Exercises and Problems - Page 263: 64

The answer is below.

#### Work Step by Step

a) Since the intensity is inversely related to the square of the distance, it follows that if the distance is doubled, the intensity is 1/4 as much. b) We use the equation for the decibel level: $\beta = 10log{(1/4)}\\ \beta = -6$ Thus, the decibel level is decreased by 6 decibels.

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