Question

what is thermal energy or heat ?????

Answer 1

Thermal energy results in an object or a system having a temperature that can be measured. Thermal energy can be transferred from one object or system to another in the form of heat. Geothermal energy is thermal energy within the Earth due to the movement of the Earth's particles.

Answer 2

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Heat is a form of energy.

In Thermodynamic, The change in internal energy of a closed system is equal to the amount of heat applied minus the amount of work done by the system.

And is represented by : ∆ U = Q - W