Сколько необходимо сжечь спирта чтобы 2 кг льда взятого при температуре -5 градусов,расплавить и 1 кг полученой воды превратить в пар,если КПД спиртовки 40% - №30450044

Сколько необходимо сжечь спирта чтобы 2 кг льда взятого при температуре -5 градусов,расплавить и 1 кг полученой воды превратить в пар,если КПД спиртовки 40%
- Предмет:
  Физика
- Автор:
  keegan
- 5 лет назад

Ответы 1

3кг спирта
1) 2+1=3
2)5+3=8
3)8*40=320
4)320÷2=160
- Автор:
  ambrosiod7jk
- 5 лет назад
- 0
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Open the brackets with the past simple or the past continuous.

Choose the correct answer.



1)  She (sit) ____ on the chair and watching TV from 5 to 7 pm.



was siting

was sitting

sat

sited

2)  When I was young I (want) ____ to be a pilot.



wanted

were wanting

had wanted

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3)  She was a beautiful woman. She always (attract) ____ a lot of men.



was attracted

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were cooking

was cooking

have been cooking

cooked

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had not

was not having

were not having

did not have

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were not

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not was

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was

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