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Автор - toyatoechka

Помогите пожалуйста.30 баллов.


Дано:

m=2кг

t1=0°С

t2=30°С

L=34*10 дж/кг

с=4200 дж/кг°С

Найти: Q=?

Ответ

Автор - lehorisa

Ответ: 320 кДж

Объяснение:

Q = Q1 + Q2

Q1 = lm = 34*10^4 Дж/кг * 2 кг = 68 000 Дж

Q2 = cmt = 4200 * 2 * 30 = 252 000 Дж

Q = 320000 Дж = 320 кДж

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