Surroundings 81843

A copper cylinder weighing 15 kg transferred 114.9 kJ of heat to the surroundings during cooling. By how many degrees Celsius did it cool down?

Correct answer:

Δt =  20 °C

Step-by-step explanation:

m=15 kg Q=114.9 kJ c=383/1000=1000383=0.383 kJ/kg/K  Q = m c Δt  Δt=m cQ=15 0.383114.9=20°C

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