Предмет: Физика, автор: Prvrln18

Какое количество теплоты необходимо для плавления 500 граммов льда взятого при температуре -10 градусов.
Помогите срочно пжжж прошу

Ответы

Автор ответа: duadna23
0
дано: m=0,5 кг, с=4200 Дж /кгС, л=33*10^4 Дж /кг , t1=-10C, t2=0C Найти Q. Решение: Q1= cm(t2-t1) ; Q2=лm, Q=Q1+Q2; Q= m(c(t2-t1) +л)=0,5(4200*10+330000)=186 кДж
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