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Q.

Is it true that the energy is a scalar quantity? 


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a

True

b

False    

answer is A.

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Detailed Solution

   The above statement is True.
Work performed by a body is a good definition of a body's energy. Energy is generally defined as the capacity to do work. Because we just need the amount of energy and not its direction, it is a scalar quantity. The same is true of work, as the phrases "work" and "energy" are interchangeable. They are derived by taking the scalar product of the force and displacement vector values.
 
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