Вопрос школьника по предмету Физика
На находящийся в однородном магнитном поле индукцией В=0.5 Тл прямолинейный провод, по которому проходит ток силой I=0.9, действует сила Ампера F=1.8 H. Определите длину L активной части провода, если он расположен под углом a=60° к вектору В
Ответ учителя по предмету Физика
F = J*B*L*sinα.
L =F/(J*B*sinα).
L = 1,8/(0,9*0,5*0,86) =
4,65 м.
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и укажи его значение
tgπ3−tgπ12
1+tgπ3⋅tgπ12
(записанно как дробь)