IYPT 1993, Задачи на турнира — Задача 14. Boiling

Problems for the 6th International Young Physicists’ Tournament

Critical edition

Protvino, Russia; June 18‒25, 1993 [1]

Critical edition: corrected and commented official translation [2]

FINAL DRAFT. — Please do not re-publish. Suggestions and criticism welcome

Edited and commented by Ilya Martchenko. The original edition’s historical notes, sources and acknowledgments are retained with problem 1.

Условие

A metal ball at room temperature is plunged into a thermos filled with liquid nitrogen. Describe the observed process of intense vaporization of nitrogen and find the time dependence of vaporization intensity $q(t)$ [g/s]. We ask you to use balls from 2 to 4 cm in diameter. [13]

Note [13]

In the Hungarian text, it is stressed to use buttons with the diameter of 2…4 cm “in the experiment”

Решение

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Оригинал в Архива: 1993.pdf