Question

what happens to the thermal energy of the air inside a building when an air conditioner is turned on? thermal energy in the building decreases. thermal energy in the building increases. thermal energy in the building remains the same.

Explanation:

Thermal energy is related to the temperature of a substance. When an air conditioner is turned on, it cools the air inside the building. Cooling the air means reducing its temperature. Since thermal energy is directly related to temperature (as temperature is a measure of the average kinetic energy of the particles in a substance, and thermal energy is the total kinetic and potential energy of the particles), a decrease in temperature implies a decrease in thermal energy.

Answer:

Thermal energy in the building decreases.