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Answer any FIVE of the following ques 11) Mention the supplementary units in SI system.12) Mention any two uses of velocity time graph.13) Define scalar product of two vectors.

Answer»

The scalar product of two vectors A and B is a scalar quantity equal to the product of the magnitudes of the two vectors and the cosine of the smallest angle between them. The scalar product is commutative, A×B = B×A. When we form the scalar product of two vectors, we multiply theparallelcomponent of the two vectors



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