Предмет: Физика, автор: loveyoudemon

какова индуктивность соленоида если при силе тока 4 А через него проходит магнитный поток в 40 мВб?какова энергия магнитного поля катушки?

Ответы

Автор ответа: Аноним

0

Ф = 40 мВб
I = 4 A
L - ?
W - ?

L = Ф/I = 40/4 = 10 Гн
W = L*I^2/2 = (10*16)/2 = 160/2 = 80 Дж

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Русский язык, автор: roninsashaexe

4.В каком ряду приведены омонимы?. Один вариант.

(Баллов: 1)

деревянный лук - репчатый лук

длинные косы -чёрные косы

мука пшеничная - мука первосортная

6 лет назад

Предмет: Английский язык, автор: max1994154rus

A. Read the text. Give it a name.
80
his first love. His career is very good. He is
David Beckham is a sportsman. Football is
an English football superstar ['su:pə sta:).
Journalists in many countries write about
him. You can see his photos in many maga-
talk about him and his career and get his
zines and newspapers. Young people
photos. David's second love is cars. He has
seven cars. His favourite car is Mercedes [mǝ'serdi:z].
David is married. His wife's name is Victoria. David and Vic-
toria have four children. Their sons' names are Brooklyn, Ro-
meo and Cruz, their daughter's name is Harper. David is
a good father and a good husband. If he plays football abroad,
he always makes telephone calls to his family. He loves his
often
Unit 2
wife and his children very much.
B. Match them.
1) David's wife's name is
2) His daughter's name is
3) David is
4) His favourite car is
5) David's first love is
6) David's second love is
a) Mercedes.
b) a good father and a good
husband.
c) football.
d) Victoria.
e) Harper.
f) cars.

6 лет назад

Предмет: Русский язык, автор: Аноним

2)Кем была жена Чуба?
Срочнооо дам 15баллов!

6 лет назад

Предмет: Химия, автор: Сюнька

решите уравнения реакции:

1)Al+KOH+H20=

2)Al2O3+H2O+KOH=

10 лет назад

Предмет: Алгебра, автор: gamo4ka

1. Упростите выражение cos4α + sin2α•cos2α. (4 и 2 это степень)

10 лет назад