July 2021 1 17 Report
Какое количество теплоты необходимо для нагревания 2.5 м^3 песка от 4 до 24 С (градусов цельсия)? ... количества теплоты? Плотность песка 1500 кг/м^3 , удельная теплоёмкость песка 920Дж/(кг * С).
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