Предмет: Физика, автор: татьянаагро

Какое кол-во теплоты необходимо,чтобы нагреть воздух от t 5•C при нормальном атмосферном давлении до t 25•Cв комнате,размеры которой равны 3x6x2,8м?Плотность воздуха в этих условиях равна в среднем 1,24кг/м3,удельная теплоёмкость равна 1кДж/кг*•С

Ответы

Автор ответа: MORZ70

V комнаты = 3*6*2,8=50,4 м куб
m воздуха = 50,4 / 1,24 = 40,6 кг
Q=(t2-t1)*q*m = 20*1000*40,6 = 812 кДж

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