Предмет: Физика, автор: космэля

ПОМОГИТЕ!!!Какое количество теплоты нужно затратить ,чтобы полностью расплавить свинцовую штабу массой 6 кг,взятую пи температуре 27 градусов?

Ответы

Автор ответа: fatt52

3

m=6 c=140 L=25*10^3 Δt=327-27=300 Q=?

Q=c*m*Δt+L*m=6*(140*300+25000)=402 кДж (4,02*10^6)

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