Предмет: Физика, автор: lizapanzova2005

Помогите пожалуйста
1) Холодная и горячая вода состоит из одинаковых молекул. Одинаковы ли внуренние энергии одной и то же массы воды в этих состояниях? Ответ обоснуйте

2) Почему в снежную зиму озимые посевы сохраняются лучше, а морозы при отсутствии снега опастны для них?

Ответы

Автор ответа: platon1108
2

Здравствуйте!

1. Нет, не одинаковы. Внутренняя энергия пропорциональна температуре тела, т.е. воды. Так как горячая вода теплее холодной, то и внутренняя энергия там выше.

2. Потому что снег образует "покрывало", которое снижает теплопроводность посевов с внешним климатом. Внутри снежного покрывала остаётся комфортная для посевов температура и они сохраняются лучше.

lizapanzova2005: Здравствуйте) Спасибо большое
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