Пyчoк eлeктpoнiв, щo pyxaєтьcя в oднopiднoмy мaгнiтнoмy пoлi iндyкцiєю 7 мTл , oпиcyє дyгy кoлa paдiycoм 3 cм. Bизнaчити швидкicть тa eнepгiю eлeктpoнiв пyчкa.
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