energy

Related Terms
Measure of the ability of a body or system to do work or produce a change, expressed usually in joules or kilowatt hours (kWh). No activity is possible without energy and its total amount in the universe is fixed. In other words, it cannot be created or destroyed but can only be changed from one type to another. The two basic types of energy are (1) Potential: energy associated with the nature, position, or state (such as chemical energy, electrical energy, nuclear energy). (2) Kinetic: energy associated with motion (such as a moving car or a spinning wheel).

Use 'energy' in a Sentence

Studies have shown that employees who are bored by their jobs or feel that they are poorly compensated will complete tasks more slowly, acting without energy.
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Energy cannot be created or destroyed or removed; it can only be transferred from one thing to another using fundamental interactions.
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I told him that I did not have the energy to go for a fun with him today, but I would love to run tomorrow morning after I have gotten a good night of sleep.
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