EXPLAIN What is one way that the thermal energy of a system can be changed?

The thermal energy of a system is the amount of heat energy in it.

One way to change thermal energy is by alter the system by introducing a new object to the system.

The thermal energy of a system is calculated using:

Assume the mass of the system remains unchanged.

When an object is introduced to the system, the thermal energy becomes:

Where:

--- the temperature of the object.

Expand:

Substitute:

This means that the thermal energy of the system will change by the thermal energy of the object that is being introduced to the system.

Hence, one way the thermal energy can be changed is to introduce a new object (or matter).

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When the temperature of an object increases, the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.

Explanation:

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