## Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson

# Chapter 15 - Exercises and Problems: 47

#### Answer

The testimony is going to hurt their case.

#### Work Step by Step

We multiply the density of the beer (which is equal to that of water) by the increase in height and by the cross-sectional area of the keg to obtain: $\Delta m = 1000 \times .012 \times \pi \times (.2^2)=1.51kg\approx 53 \ oz$ This is more than the amount that the person would need to be above the legal limit, so this is going to hurt their case.

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