Pomogite reshit zadachu

Question

Pomogite reshit zadachu

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Answer 1

A=2,1   c=4200Дж/кг*С°   m=0,4 кг/c    γ=63 Вт/m*C°   x=56 м  
Тв=65 С°   Тп=25 С°    Т - ?
х=2,1*4200*0,4/63*log₂((65°-25°)/(T-25°))=56
56*log₂(40°/(T-25°))=56
log₂(40°/(T-25°))=1
40°/(T-25°)=2¹
2*T-50°=40°
T=45°.

Answer 2

Решение на фото........

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