Съдържание

IOM 2021, Блиц — Задача 30

Оригинал на условието (PDF)Съобщи за грешка

Всички материали от IOM 2021

The Blitz-contest of IOM-2021

Условие

The point charge $+q$ is located at a distance $L = 3R$ from the center of the metallic sphere of radius $R$ . At what values of the positive charge $+Q$ of sphere the sphere and charge will attract?

A shaded metallic sphere of radius R with its centre marked, and a point charge q to the right; the distance L from the centre of the sphere to the charge is shown with a double arrow below.

$\frac{Q}{q} < \frac{15}{184}$
$\frac{Q}{q} < \frac{17}{192}$
$\frac{Q}{q} < \frac{19}{191}$
$\frac{Q}{q} < \frac{21}{197}$
$\frac{Q}{q} < \frac{23}{214}$

Отговори

Решение

Оригинал в Архива: iom-2021-blitz-tasks-eng.pdf · официални решения: iom-2021-blitz-answers-eng.pdf