Consider two closed systems A and B. System A contains 3000 kJ of thermal energy at 20°C, whereas system B contains 200 kJ of thermal energy at 50°C. Now the systems are brought into contact with each other. Determine the direction of any heat transfer between the two systems

Answer 1

Heat always flows from the hotter body to the colder one, regardless of total energy content. That is one consequences of the Second Law of Thermodynamics

Answer 2

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