Предмет: Физика, автор: victorijakapytava

8 задача с объяснением пожалуйста

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Автор ответа: danialsheenoda6

0

Объяснение:

объём V=a*a*a=0,1*0,1*0,1=0,001 м^3

масса вещества m=p*V=2500*0,001=2,5 кг

определим количество теплоты Q=cm∆t=840*2,5*20=42Дж=42 кДж

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