Съдържание

Условие Решение

IYPT 1988, Задачи на турнира — Задача 2. “Eternal radio”

Оригинал на условието (PDF)Съобщи за грешка

Всички материали от IYPT 1988

Problems for the 1st International Young Physicists’ Tournament

Critical edition

Olympiets Youth Center, Moscow, Soviet Union; March 28–April 2, 1988 [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

The sciences nourish young people,
Give consolation to the old,
They decorate a happy life,
And they protect one in misfortune...

M. V. Lomonosov [3]

Условие

Develop and construct a portable radio receiver that does not use power supplies. The usability parameter is $x=P/Lm$ , where $P$ is acoustic pressure at a distance of $1\,\mathrm{m}$ from the receiver, $L$ is maximum linear dimension, and $m$ is mass of the receiver.

Решение

Внимание: Непълно решение

В архива няма официално решение на тази задача.

Оригинал в Архива: 1988.pdf