IYPT 2011, Задачи на турнира — Задача 16. Smoke stream

24th IYPT (2011)

Заглавие в източника

Source: Problems for IYPT 2011 (iypt.org, July 17, 2010)
Selected at the IOC meeting in Gössing on July 16—17, 2010
Reference Kit for 2011 (final edition, July 29, 2011) →
Exemplary solutions for 2011 →

Условие

A glass jar is covered with cellophane. A tightly folded paper tube of length 4—5 cm is inserted hermetically into the jar through the cellophane cover. The tube is oriented horizontally. If one burns the outside end of the tube the dense smoke flows into the jar. Explore this phenomenon.

Решение

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Оригинал в Архива: 2011.txt