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西南交通大学:《大学物理》课程教学资源(讲稿,双语)CHAPTER 2 Introduction to Vector Analysis

2.1 scalar and vector quantities 1. scalar Physical concepts that require only one numerical quantity for their complete specification are scalar quantities. 2. vector Vector quantities require for their complete specification a positive quantity, called the magnitude of the vector and the direction otice:Not all things with a magnitude and direction are vectors
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