Chapter 19, Problem 1Q

What happens to the work done on a jar of orange juice when it is vigorously shaken?

To determine

The result happens to the work done on the jar of orange juice when it is shaken vigorously.

Answer to Problem 1Q

The work done on the jar of juice will increase the temperature of the juice which in turn cause the mixing of components of the juice and result froth in the jar.

Explanation of Solution

The vigorous shaking of the jar of orange juice would transfer the work done on it into heating the juice. This heating up is due to the increase of average kinetic energy of molecules in the juice. Increased kinetic energy of the molecules will cause thorough mixing of the component of the juice. Thus the liquid and the pulp will get mixed well due to the work done on the jar.

Moreover, the vigorous shaking will cause the air molecules to dissolve with the juice and as a result, froth will develop in the jar.