Chapter 10, Problem 2Q

To determine

The cause of leakage in the cosmetics bottles and other containers during a flight.

Explanation of Solution

Introduction:

Pressure can be defined as force exerted on a surface per unit area. Air pressure or atmospheric pressure can be defined as the pressure against the surface by the air above it.

The cosmetic bottles are filled according to the atmospheric pressure. During the flight, the pressure drops due to high altitude but the pressure with which the cosmetic bottles or other containers are filled remains the same. Due to this pressure difference, the liquids filled in the bottles tend to expand a little bit which causes leakage.

Conclusion:

Hence, due to pressure difference the cosmetics bottles and other containers leak during the flight.