IOM 2021, Блиц — Задача 70

The Blitz-contest of IOM-2021

Условие

Inside a given region in space there are two uniform fields: an electric field, with an intensity E=0.01E = 0.01 V/m, and a magnetic field, with an intensity B=0.2B = 0.2 T. These fields are placed in such a way that they are perpendicular to each other, just as shown in the figure. A charged particle qq enters the region with a constant velocity vv, which is perpendicular to both fields. The particle goes through the region without its velocity being altered. Find the speed of the particle. Give answer in mm/s, rounded to integer.

Velocity selector: a positively charged plate (row of “+” signs) at the top and a negatively charged plate (row of “−” signs) at the bottom, with vertical arrows of the electric field E pointing down between them; the magnetic field B points into the page (rows of ⊗ symbols, labelled B at the right, E at the left). A particle q (small circle) on the left moves with velocity v (arrow to the right) along a dashed horizontal line through the middle of the region.

Отговори

Решение

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