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Date	November 2016	Marks available	2	Reference code	16N.3.SL.TZ0.3
Level	Standard level	Paper	Paper 3	Time zone	Time zone 0
Command term	Determine	Question number	3	Adapted from	N/A

Question

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.

Markscheme

i

18 «s»

Allow answer in the range of 17 «s» to 19 «s».
Ignore wrong unit.

ii

36 «s»

Allow answer in the range of 35 «s» to 37 «s».

a.

radioactive/nuclear decay
OR
capacitor discharge
OR
cooling

Accept any relevant situation, eg: critically damping, approaching terminal velocity

b.

Examiners report

[N/A]

a.

[N/A]

b.

Syllabus sections

Core » Topic 7: Atomic, nuclear and particle physics » 7.1 – Discrete energy and radioactivity

Show 124 related questions

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