SL Paper 3
A student pours a canned carbonated drink into a cylindrical container after shaking the can violently before opening. A large volume of foam is produced that fills the container. The graph shows the variation of foam height with time.
Determine the time taken for the foam to drop to
(i) half its initial height.
(ii) a quarter of its initial height.
[2]
a.
The change in foam height can be modelled using ideas from other areas of physics. Identify one other situation in physics that is modelled in a similar way.
[1]
b.