Предмет: Физика, автор: gridzukura

чавунну каструлю масою 0,6 кг налили воду масою 1,3 кг. Яку кількість теплоти треба передати каструлі з водою для зміни їх температури від 5,3 ℃ до 68,8 ℃? (питома теплоємність чавуну с= 540 Дж/(кг∙℃), питома теплоємність води с= 4200 Дж/(кг∙℃)

Ответы

Автор ответа: zinovicgrigorij

Ответ: 367284Дж

Объяснение:

Дано:

m1=0,6кг

m2=1,3кг

t1=5,3°С

t2=68,8°С

с1=540Дж/кг°С

с2=4200Дж/кг°С

_______________

Q-?

Q=c1*m1(t2-t1)+c2*m2*(t2-t1)=540*0,6*(68,8-5,3)+4200*1,3*(68,8-5,3)=20574+346710=367284Дж

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