- #1

ca2010

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**1. You are standing some distance from a jackhammer where the sound intensity is bearable. You then walk half the distance toward the jackhammer. The change in sound level is about:**

**The given answer is 6dB.**

**I am not sure if this problem requires knowing what intensity "bearable" is. I know that I=I**

_{0}(r_{0}/r)^{2}so the intensity should increase fourfold. However I am not sure how to arrive at 6dB