百度试题 结果1 题目Which of the following physical quantity is scalar? A. Force B. Impulse C. Momentum D. Work 相关知识点: 试题来源: 解析 D
Scalar, a physical quantity that is completely described by its magnitude; examples of scalars are volume, density, speed, energy, mass, and time. Other quantities,
VectorsAscalarisaquantitywhichhasmagnitudebutnotdirectioninspace.Forexamplespeed,volume,energyareallscalarquantities.Avectorhasmagnitudeandadefinitedirectioninspace.Forexamplevelocity,force,magneticfieldareallexamplesofvectors.Notation.Inbooksandexaminationpapers,vectorsarewritteninboldtype.SothataandAarevectors.In...
VectorsAscalarisaquantitywhichhasmagnitudebutnotdirectioninspace.Forexamplespeed,volume,energyareallscalarquantities.Avectorhasmagnitudeandadefinitedirectioninspace.Forexamplevelocity,force,magneticfieldareallexamplesofvectors.Notation.Inbooksandexaminationpapers,vectorsarewritteninboldtype.SothataandAarevectors.In...
VectorsAscalarisaquantitywhichhasmagnitudebutnotdirectioninspace.Forexamplespeed,volume,energyareallscalarquantities.Avectorhasmagnitudeandadefinitedirectioninspace.Forexamplevelocity,force,magneticfieldareallexamplesofvectors.Notation.Inbooksandexaminationpapers,vectorsarewritteninboldtype.SothataandAarevectors.In...