A sound wave or an ocean wave, for example
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A mechanical wave uses matter to transfer energy. This type of wave requires a medium, such as air or water, to propagate. Sound waves and seismic waves are examples of mechanical waves.
A vacuum cleaner typically uses electrical energy to power the motor that creates suction. It does not use the concept of a vacuum in terms of energy, but rather refers to the absence of air or matter in the cleaning process.
The compressor in a refrigerator uses electricity to compress the refrigerant gas, which causes it to release heat and transfer energy from the inside to the outside of the refrigerator.
The microwave oven uses electrical energy to generate microwaves, which are a form of electromagnetic radiation. When the microwaves enter the food, they transfer their energy to the water molecules inside the food, causing them to vibrate and generate heat. This transformation is an example of electrical energy being converted into electromagnetic energy and then into thermal energy.
A microwave oven uses electromagnetic radiation to transfer energy to food molecules, causing them to vibrate and generate heat. This heat cooks or reheats the food quickly and efficiently.
A turbine typically uses mechanical energy to convert a fluid (such as air, water, or steam) into rotational energy. This mechanical energy is then often converted into electrical energy by a generator.