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Площадь острия иголки равна 0,00057 мм2 . Какое давление оказывает игла на ткань, если швея нажимает на иглу перпендикулярно поверхности ткани с силой 8,55 Н?
Ответ: игла оказывает на ткань давление, равное ГПа.
Ответы 3
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спасибо
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Автор:
carrasco - 5 лет назад
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0
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нез)
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Автор:
fionaxhqc - 5 лет назад
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0
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Дано:
S=0,00057мм²=0.00000000000057М³
F=8.55 H
Найти: p-?
Решение: p=
p=
=15000000000000Па=15000ГПа
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Автор:
eduardoshaw - 5 лет назад
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0
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В косвеную речь
Report the sentences. Indirect statements
Exercise 1
1. Nick told his brother: “I can give you this information.”
2. Aunt Polly said to Tom: “Mother left the breakfast on the table.”
3. Tony said to Dick: “They will arrive tomorrow.”
4. “You don’t know the simplest rules,”- father said.
5. “We shall play in the yard,”- Henry said.
6. “I’ll come to your place tomorrow,”- Ann said.
7. “I know where you have put sweets,”- little boy said to his grandfather.
8. Ron told his friend: “That man is my uncle.”
9. Steve told me: “I have already learnt the poem, now I am free.”
10.“I can run very fast,”- the sportsman said.
Exercise 2
1. Mrs. Roberts:” My daughter is very much interested in Geography.”
2. Diana:” Hi, Helen! It’s a long time since I saw you last.”
3. Helen:” I saw you last Monday in the library.”
4. ”I’ve bought sour cream and bread,”- Bill said.
5. ”I will go both to Canada and Australia,”- the man said.
6. Ron said to Jim:” Ann and Jill are both fond of honey.”
7. The engineer said:” The bridge will not be built next year.”
8. “Nick said:” My granny likes daisies very much.”
9. ”I don’t know Adam very well,”- Henry said.
10.”My brother bought a new car last week,”- Jerry said.
Exercise 3
1. Tim said:” I know how to solve this problem.”
2. Alice said:” I am confused by English names.”
3. John said to Mary:” This boy knows two foreign languages.”
4. Mrs. Green said to her husband:” You have put your gloves on the chair.”
5. The coach said:” This bicycle is made in England.
6. Andy said:” Next year I will go to school.”
7. ”Ralf is not a very good swimmer,”- said Mr.Wig.
8. ”I haven’t seen you for a long time,”- said my uncle.
9. Abe said:” I have never met such people!”
10.Nell said to mother:” The boys are playing leap-frog in the yard.”
Exercise 4
1. Father said:” Nell is at the backer’s. She is buying bread.”
2. Al said:” Spring is the best time for hiking.”
3. Pete said to Nelly:” It won’t rain today, don’t take your umbrella.”
4. ”Fred hasn’t learned the dialogue today,”- the teacher said to parents.
5. Dan said to Jack:” My cat doesn’t catch mice.”
6. Phil said:” Her cousin never visits doctors.”
7. Will said:” His brother can drive a car.”
8. The old man said:” I don’t know how to answer your question.”
9. Mr.Green said:” Bears always sleep in winter.”
10.”Sam was sometimes very naughty,”- mother said.
Exercise 5
1. ”I have painted the door!”- the boy said.
2. ”The Earth is round,”- the teacher said.
3. ”I’ll bring you the report tomorrow,”- the officer said.
4. Kelly said to her mother:” He is watching that film again!”
5. Aunt Polly said:” John was in Paris last year.”
6. Fred said:” Henry will come to see you soon.”
7. ” Phil decided to take the exams,” – said Mrs. Wig.
8. Jenny said to me: “We go to the cinema tomorrow.”
9. Jim said to his aunt: “I was in Madrid.”
10.“I know where my book is,” – said the boy
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Автор:
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