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http://study.com/academy/lesson/what-is-thermal-energy-definition-examples.html

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that's how it works.

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https://www.youtube.com/watch?v=THdhLVEVyoU

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In physics, energy is the property that must be transferred to an object in order to perform work on – or to heat – the object, and can be converted in form, but not created or destroyed.

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Thermal energy is energy possessed by an object or system due to the movement of particles within the object or the system.

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https://www.youtube.com/watch?v=Jnj8mc04r9E

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that's a practical example.

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the potential energy is when the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.

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https://www.youtube.com/watch?v=Y-VnLWag25U

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that's how the kinetic energy works when a ball falls down from a pendant surface.

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that's how the kinetic energy works when a ball falls down from a pendant surface.

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kinetic energy is the energy of a body or a system with respect to the motion of thebody or of the particles in the system. A nowdays example could be when a pendulum is vibrating, there is a continual transformation of potential into kinetic energy, and vice versa.