Задача id10532

A beam of protons flies into a uniform magnetic field with an induction of 0.1 Tesla perpendicular to the induction lines. Protons move in a magnetic field in a circular arc with a radius of 20 cm and strike a grounded target. Find the thermal power released in the target if the current in the beam is 0.1 mA. The ratio of the proton charge to its mass is 108 C/kg.

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