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Learn about thermal energy, its definition, and how it relates to work and energy on Khan Academy.
Learn about thermal conduction, convection, and radiation in this Khan Academy video.
The first law of thermodynamics relates the change in the internal energy of a system (ΔE) to the heat transferred (q) and the work done (w). At constant pressure, q is equal to the change in enthalpy (ΔH) for a process.
Uncontrolled systems always evolve toward more stable states—that is, toward more uniform energy distribution (e.g., water flows downhill, objects hotter than their surrounding environment cool down).
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Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
Learn how to calculate gravitational potential energy, the energy an object has due to its position in a gravitational field. See how gravitational potential energy relates to work, kinetic energy, and conservation of energy.
Heat capacity is a property that describes how much energy is needed to change the temperature of a material. Objects with a high specific heat capacity require a greater change in energy to change their temperature and vice versa for objects with a low specific heat capacity.
Here we learn what work and energy mean in physics and how they are related. Skip to main content If you're seeing this message, it means we're having trouble loading external resources on our website.