Задача id10073

A beam of electrons flies into space where a uniform electric field is excited, the intensity of which is 1 kV/m, and a uniform magnetic field perpendicular to it, the induction of which is 1 mT. The speed of electrons is constant and directed perpendicular to vectors E and B. Find the speed of electrons. How will electrons move if the electric field is turned off? What is the radius of curvature of the electron trajectory in this case?

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