Предмет: Физика, автор: behruz7007

При помощи лебёдки поднимают груз массой 5 т на высоту 4 м.
Вычисли работу, которую надо произвести для этого подъёма, если коэффициент полезного действия лебёдки равен 75 %.

Принять =9.8Нкг.

Ответ (округли до целого числа): ≈кДж

Ответы

Автор ответа: daniilzhulanov

Привет!

Решение на фото!

Удачи)

Приложения:

behruz7007: Спасибо

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: WarmRain

Английский, 9 класс.Помогите, пожалуйста. с английским напряг...дан текст. нужно ответить на вопросы к нему. ТЕКСТ:
I am personally very interested in a career working with children. My parents think I am a caring person with good communication skills. Since my childhood I have wanted to be either a nursery school or primary school teacher. These careers require further study after Year 11. So I am taking A levels in English, drama and IT* at college. I also take part in the college events —this is something pos-itive that I can write in my CV together with my work experience. I helped in both a nursery and a primary school. I thought it would allow me to develop both my key skills and my personal qualities. I asked the people who I worked with what qualifications they had done. They talked to me about the good aid bad aspects of the job of a teacher and what they liked about it. It is hard work but it allows you to fee] personal achievement, to feel respect, besides the salary is good. I liked to belong to a team and my work helped me to improve my confidence and to get the skills that I need for higher education or employment. Now I plan to go on to higher education after college. But if I decide to cliaiige any career in the future, I am certain that neither my skills nor experience will be useless to me.
ВОПРОСЫ: 1-What does Layla want to be a teacher?
2-What skills does she have?
3-What is necessary for a teaching career?
4-Has She got any work experience?
5-What did she do?6-Did she like it?
7-What did she expect from her work experience?
8-Was it useful?
9-What did she learn from the people she worked with?
10-Are there any good and bad aspects of the job of a teacher?
11-What is she going to do to achieve her career goals?

1 год назад

Предмет: Русский язык, автор: milanamolokova

мне нужно 10 слов с суффиксом ек и 10 слов с суффиксом ик

1 год назад

Предмет: Русский язык, автор: POLINASHAH

Измени слова по образцу: Пить-пью, пьёт;

бить, лить, вить

1 год назад

Предмет: Обществознание, автор: sofiykam2005

Проект: трудовые подвиги во время Великой Отечественной войны (кратко)

8 лет назад

Предмет: Химия, автор: talia150275

Найти массу углерода ,который прореагировал с недостатком кислорода ,если при этом образовалось 33,6 л газа (н.у.)

8 лет назад