Question

СРОЧНО!!!!!!!!!!!!!!!!​

Answer 1

Ответ:

m = 2кг
t1 = 40°C
t2 = 30°C
Q = 5000Дж

с = 250 Дж/кг * °C

Q = c*m*Δt = c*m*(t1 - t2).
c = Q / (m * (t1-t2)) = 5000 / (2 * (40 - 30)) =
= 5000 / (2 * 10) = 5000 / 20 = 250 Дж/кг * °C