если расплавить примерно 100гр олова для пайки в алюминиевом или медном - №32579823

если расплавить примерно 100гр олова для пайки в алюминиевом или медном наконечнике
примерно через сколько минут оно застынет?
- Предмет:
  Физика
- Автор:
  speedykey
- 5 лет назад

Ответы 1

Ответ:
Через 2-4 секунди
Объяснение:
- Автор:
  cristina
- 5 лет назад
- 0
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2. Переведите словосочетания, обращая внимание на обстоятельства времени.
1. ... (often, usually, always, sometimes, seldom) bills are discussed, people are injured, our
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- Предмет:
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Нужно перевести слова вместе с транскрипцией этого текста: Nowadays people can't imagine their kitchen without a refrigerator. The first refrigerators appeared at the end of the 18th century. They looked different: they were just iceboxes. The refrigerators of the past were just wooden boxes, sometimes lined inside with metal. People put ice into the box and then placed the food inside keep it cool. The refrigerator, similar to the one that we have now, was produced by General Electric in 1911, in France. It was very expensive. In those days, with the same money you could buy two cars. Today, in developed countries almost every family has enough money to buy a refrigerator for their kitchen. It's hard to imagine how difficult and uncomfortable our lives would be without a refrigerator. Прошу, помогите
- Предмет:
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- Автор:
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- 5 лет назад
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Докажите тождество

2 sin ^2 a / tg a* (cos ^2 a - sin ^2 a) =tg2a
- Предмет:
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- Автор:
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- 5 лет назад
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1 hour 1 day 100 years