What Is Energy.....................?
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— Energy is the ability to do work
energy: E = MC2 where E is energy in ergs, M is mass in grams, and C is the velocity of light in centimeters per second —
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It basically means the capacity to perform work. However, just because it exists, it doesn’t mean that it’s necessarily available to do work. Moreover, heat and work i.e., energy in the process, transfers from one body to another. It can convert from one form to another in various ways. For instance, usable mechanical or electrical energy is, produced by many kinds of devices, including fuel-burning heat engines, generators, batteries, fuel cells, etc.
The SI unit is joules and one joule is equal to the work done by a one-newton force acting over a one-meter distance.
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