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Консультация № 177154
Обсуждение
09.03.2010, 08:29
общий
это ответ
Здравствуйте, Mr_BeN.
Дано:
R1=13 см
R2=2 см
Найти: m1/m2
Решение:
Работа электрического поля равна кинетической энергии иона
qU=mv2/2
оскольку заряды и напряжение одинаковы для обоих ионов,
то
m1*v12=m2*v22 (1)
На ион, движущийся в магнитном поле действует сила Лоренца
FЛ=q*v*B (2)
которая подчиняется 2 закону Ньютона
FЛ=m*v2/R (3)
из выражений (2) и (3)
v=q*B*R (4)
из выражения (1), с учетом (4) следует, что
m1/m2=v22/v12=R22/R12=132/22=169/4
Удачи
Дано:
R1=13 см
R2=2 см
Найти: m1/m2
Решение:
Работа электрического поля равна кинетической энергии иона
qU=mv2/2
оскольку заряды и напряжение одинаковы для обоих ионов,
то
m1*v12=m2*v22 (1)
На ион, движущийся в магнитном поле действует сила Лоренца
FЛ=q*v*B (2)
которая подчиняется 2 закону Ньютона
FЛ=m*v2/R (3)
из выражений (2) и (3)
v=q*B*R (4)
из выражения (1), с учетом (4) следует, что
m1/m2=v22/v12=R22/R12=132/22=169/4
Удачи
Об авторе:
С уважением
shvetski
С уважением
shvetski
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