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математический маятник совершает колебания с частотой 0,5 Гц на поверхности планеты. Вычислите длину маятника, если напряжённость гравитационного поля планеты 8 Н/кг
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Предмет:
Физика -
Автор:
keshawnojb6 - 5 лет назад
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Ответы 1
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Ответ:
Объяснение:
v=1/2*pi*sqrt(L/g) L=g/4*pi^2*v^2=8/4*10*0,25=0,8 м
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Автор:
ross0y9v - 5 лет назад
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THE COMPLEX OBJECT
Exercise 1. Open the brackets and use the Complex Object.
Model: He expected (they, arrive) at 5. — He expected them to arrive at 5.
1. Do you want (they, stay) at the hotel or with us? 2. I'd like (the professor, look through) my report. 3. Do you want (I, show) you the sights of the city? 4. We expect (he, arrange) everything by the time we come. 5. I want (she, tell) me the news in brief. 6. He expected (the meeting, hold) in the Red Room. 7. I would like (they, fix) an appointment for me for Tuesday. 8. We want (she, introduce) us to the president. 9. I don't want (they, be late) for dinner. 10. He expected (she, invite) to the party by the Smiths. 11. I'd like (the dress, buy) by Saturday. 12. I don't want (she, treat) like Alice. 13. We considered (he, be) an honest person. 14. I don't like (she, prevent) me from doing it. 15. I suspect (he, help) by her.
Exercise 2. Combine the sentences using the Complex Object.
Model: I did not see him. He entered the house. — I did not see him enter the house.
1. They did not notice us. We passed by. 2. He heard her. She was playing the piano. 3. He saw her. She burst into tears. 4. I felt her hand. It was shaking. 5. He hasn't heard us. We called his name. 6. They haven't seen the accident. It occurred at the corner. 7. I heard them. They were arguing. 8. She heard the footsteps. They were dying away. 9. She felt something. It was crawling around her neck. 10. We many times heard him. He told this story. 11. She noticed the expression of his face. It changed suddenly. 12. I heard somebody. He mentioned my name. 13. I felt something hard. It hurt my leg.
Exercise 3. Change complex sentences into sentences with the Complex Object.
1. I did not expect that she would forget about my birthday. 2. She saw how the children were playing in the park. 3. Do you know that he went abroad two days ago? 4. I like to watch how she dances. 5. She could hardly I believe that he had been rescued. 6. He expects that everybody will be ready to do this work. 7. I don't like when the children are late for dinner. 8. Don't consider that he is a hero. He is an ordinary man. 9. I've heard how he was arguing with his father. 10. I suspect that he has taken my money. 11. She likes to watch how the sun sets. 12. I hate when people shout at each other. 13. They suppose that he will cope with this work. 14. I've heard how she was crying. 15. We expect that he will solve this problem soon.
Exercise 4. Open the brackets and use the proper form of the Complex Object.
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