IYPT 2000, Задачи на турнира — Задача 14. Illumination

13th IYPT (2000)

Заглавие в източника

Source: metal.elte.hu 2000
Selected at the Preparatory Seminar in Visegrád on October 22—24, 1999
Exemplary solutions for 2000 →

Условие

Two bulbs, 100 and 40 watts, respectively, illuminate a table tennis ball placed between them. Find the position of the ball, when both sides of the ball appear to be equally lit. Explain the result.

Решение

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Оригинал в Архива: 2000.txt