You work with a catering firm and have been given a challenge. By emptying several liquid beverage dispensers, you have to rank them in order of their content (which one is fullest, next fullest, etc.) Having had a physics class, you devise a scheme to compare the speeds of the fluids exiting the spouts at the bottom of the containers. The principle you base your prediction on is:
A) the pressure (and hence water level) is lower when the speed is lower.
B) the volume is lower so the speed is lower.
C) what were you thinking!? The speeds won't depend upon fluid level
D) the speed increases when there is more air in the jug.

Question

Quizplus · Accepted Answer

The principle that the speed of fluid exiting a spout increases with the height (or pressure) of the fluid in the container is based on Bernoulli's principle and the equation of continuity. The higher the fluid level, the greater the pressure at the bottom, leading to a higher exit speed.

You Work with a Catering Firm and Have Been Given