The transfer of thermal energy as heat requires a difference in temperature between the two points of transfer. Heat may be transferred by means of conduction, convection, or radiation. Conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object.
Heat transfer between two objects ends when they reach the same temperature or thermal equilibrium. This process is guided by the second law of thermodynamics and can be observed via changes in temperature. Once no net heat transfer occurs over time, a state of thermal equilibrium is reached.
The transfer of heat, or thermal energy, between two objects ends when those objects reach the same temperature, a state known as thermal equilibrium. This process is guided by the second law of thermodynamics, which indicates that heat will naturally transfer from a hotter object to a cooler one. For instance, if you put ice into a hot drink, heat transfers from the warmer drink to the colder ice until they both reach the same temperature. Furthermore, the internal energy of a system, which includes its thermal energy, is directly proportional to its temperature. Hence, observing the temperature change can provide an indication of when heat transfer has ceased.
However, it's important to note that the absence of a temperature difference doesn't mean energy isn't there; it just isn't available for work because no more heat transfer can occur without a temperature difference. This provides a fundamental characterization of a thermodynamic system and exemplifies that observation of no net heat transfer over time indicates a state of thermal equilibrium.
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Answer: Radio waves is a type for wave that is used to transmit television and radio programmes, while microwaves can be used for phone communication.
Explanation: Radio waves and microwaves are types of electromagnetic radiation that has the longest wavelengths and the lowest frequency and it carries the least amounts of energy. This causes it to interact with mostly nothing as it travels, therefore it is just easier to transmit information as there is no disturbance in the transmittion.