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Консультация № 193037
04.04.2018, 12:30
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
Электрон имеет скорость v, направленную под углом альфа к сило-
вым линиям однородного магнитного поля. При какой минимальной
индукции магнитного поля электрон будет возвращаться на одну и ту
же силовую линию поля, сместившись вдоль нее на L? Модуль заряда
электрона равен e, его масса m.
Электрон имеет скорость v, направленную под углом альфа к сило-
вым линиям однородного магнитного поля. При какой минимальной
индукции магнитного поля электрон будет возвращаться на одну и ту
же силовую линию поля, сместившись вдоль нее на L? Модуль заряда
электрона равен e, его масса m.
Обсуждение
09.04.2018, 11:28
общий
это ответ
Здравствуйте, COVER$!
Если изменить условие задачи следующим образом: "Электрон имеет скорость v, направленную под углом альфа к силовым линиям однородного магнитного поля. При какой индукции магнитного поля электрон будет возвращаться на одну и ту же силовую линию поля, сместившись вдоль нее на один шаг? Модуль заряда электрона равен e, его масса m", то для её решения нужно воспользоваться формулами для шага
винтовой линии, по которой электрон перемещается вдоль выбранной силовой линии магнитного поля, то есть формулой
выразив отсюда
и произведя вычисления.
Если предположить что под минимальной индукцией в исходной задаче подразумевается индукция, соответствующая перемещению электрона на расстояние
за минимальное число оборотов (то есть за один оборот) вокруг оси винтовой линий, то 
а вычисленное выше значение индукции является искомым.
Если изменить условие задачи следующим образом: "Электрон имеет скорость v, направленную под углом альфа к силовым линиям однородного магнитного поля. При какой индукции магнитного поля электрон будет возвращаться на одну и ту же силовую линию поля, сместившись вдоль нее на один шаг? Модуль заряда электрона равен e, его масса m", то для её решения нужно воспользоваться формулами для шага
винтовой линии, по которой электрон перемещается вдоль выбранной силовой линии магнитного поля, то есть формулойвыразив отсюда
и произведя вычисления.Если предположить что под минимальной индукцией в исходной задаче подразумевается индукция, соответствующая перемещению электрона на расстояние
за минимальное число оборотов (то есть за один оборот) вокруг оси винтовой линий, то а вычисленное выше значение индукции является искомым.
Об авторе:
Facta loquuntur.
Facta loquuntur.
Форма ответа
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