Съдържание

Условие Решение

IYPT 1990, Задачи на турнира — Задача 6. Evaporation-condensation

Оригинал на условието (PDF)Съобщи за грешка

Всички материали от IYPT 1990

Problems for the 3rd International Young Physicists’ Tournament

Critical edition

Olympiets Youth Center, Moscow, Soviet Union; June 7‒14, 1990 [1]

Critical edition: translated, restored, and commented text [2]

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

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

Епиграф

Victories do not attract him.
For him growth means: profound defeat
at the hands of ever greater adversaries.
R. M. Rilke [3]

Условие

A П-shaped soldered glass tube contains some water (Fig. 2).

Original sealed inverted-U glass tube with different water levels separated by height H.

If there is an initial difference of water levels $H$ , then the water levels will become equal after some time. Estimate the rate of this equalization for a given $H$ and $T=\mathrm{const}$ ,

a. if there is no air in the tube

b. if there is some air in the tube, at normal atmospheric pressure.

Решение

Внимание: Непълно решение

В архива няма официално решение на тази задача.

Оригинал в Архива: 1990.pdf