He metal aluminum coils in an air conditioner conduct thermal energy from inside the house and release it outside the house. what can be said about the coils when they are accepting the heat inside the house?
they must be warmer than the air inside the house.
they must be cooler than the air inside the house.
they must have more thermal energy than the air inside the house.
they must be more insulated than the air inside the house.

The correct option is "They must be cooler than the air inside the house".

Explanation:

Thermal energy flows from the body at higher temperature to the body at the lower temperature.

In the given problem, the metal aluminum coils in an air conditioner conducts thermal energy from inside the house. The coils must be cooler than the air inside the house.

The thermal energy flows from inside the room to the coils in an air condition. Then, the thermal energy flows from the metal aluminium coils to outside the house.

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answerdmitry mendeleyev made a workable classification of the elements