-
ДАНО: ЭТО было на Контрольной работе в 8-ом Классе!
U- 220В
t- 1 сек
P- 100Вт
Найти нужно :
Силу ток- i , Q - ? , R - ?
Ответы 1
-
U=220 B силу тока найдем из ф-лы мощности:t=1 c P=IU ⇒ I=P/U=100/220=0,5 A;P=100 Вт количество теплоты: Q=IUt=0,5*220*1=110 Дж;___________ сопротивление: R=U/I=220/0,5=440 Ом.I-?; Q-?; R-?
-
Автор:
beyoncehhqr - 5 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
- какую область называют житницей страны
-
1. If I were a bird, I... a. will fly and see many places. b. would fly and see many places. c. can fly and see many places. 2. If I were a computer a. I will be very stupid. b. I am very stupid. c. I would be very stupid. 3. If there were no police officers,... a. there would be so much crime in the streets b. there will be so much crime in the streets c. there won't be so much crime in the streets 4. People would spend more time at home, if a. there were no restaurants. b. there are no restaurants c. there will be no restaurants 5. If I could speak Japanese, a. I will go to Japan b. I would go to Japan c. I am going to Japan 6. If you saw a thief stealing,... a. what would you do? b. what are you do? c. what are you doing? 7. If you were a colour,... a. what colour will you be? b. what colour would you be? c. what colour are you be? 8. If you were given 1 million dollars,... a. what will you do? b. what are you doing? c. what would you do?
-
Предмет:
Английский язык -
Автор:
raina - 5 лет назад
-
Ответов:
1 -
Смотреть
-
- Где растёт многоклеточная водоросль спирогира ?
-
Массу этилена,полученного при нагревании 200г этилового спирта, содержащего 4% примесей с концентрированной серной кислоты.
Помогите пожалуйста....
Топ пользователей
-
Fedoseewa27
35922 -
Askold
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
770
How much to ban the user?
1 hour
1 day
100 years