10. according to the second law of thermodynamics, which is a requirement for thermal energy to flow from…

10. according to the second law of thermodynamics, which is a requirement for thermal energy to flow from colder objects to hotter objects? (1 point)\nthermal expansion must occur in the system.\nwork must be done on the system.\nconvection must occur within the system.\nradiation must alter the system.
Answer
Brief Explanations:
According to the second law of thermodynamics, heat naturally flows from hotter to colder objects. For heat to flow from colder to hotter, an external influence is needed. Work done on the system (like in a refrigerator) provides this external influence. Thermal expansion, convection, and radiation don't directly enable heat flow from cold to hot as required here.
Answer:
Work must be done on the system.