本题目来源于试卷: gc physics textbook chapter 3 problems，类别为 通用国际物理
[问答题]
Can the magnitude of a vys4u; s5phv,qk x gj:z20:ekfecy51+ vdxhu*zfhf (e :ator ever (a) be equal to one of its components, or (b) be less than one o uah1y(e*: hzd+v5f xff its components?
参考答案: (a) The magnitude of a vector can equal the length of one of its components if the other components of the vector are all 0; i.e. if the vector lies along one of the coordinate axes. (b) The magnitude of a vector can never be less than one of its components, because each component contributes a positive amount to the overall magnitude, through the Pythagorean relationship. The square root of a sum of squares is never less than the absolute value of any individual term.
本题详细解析:
暂无
| 
