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...
1) pull of earth on a body 2) mass of a body 3) scalar quantity 4) unit per kilogram Which statement is true about weight. 1) The pull of the earth on a body. 2) Mass of a body. 3) A scalar quantity. 4) Unit per kilogram. Is the...
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is doubled in value Which quantity is conserved in the collision of two objects: 1. perfectly elastic collision: a. Kinetic energy. b. Potential energy. c. Total momentum. 2. Perfectly inelastic collision: a. Kinetic energy. b. Potential energy....
8. The vehicle ground contact surface friction state estimating apparatus as claimed in claim 1, wherein the first wheel slip degree is a quantity representing a relative velocity vector of the vehicle wheel relative to the ground surface in the direction of the first wheel force, the second wh...
aPlease review attached drawing and below pictures. Quantity is 150 units. Please kindly get back to us with your best price and lead time. 回顾请附加的图画和在图片之下。 数量是150个单位。 亲切地请得到回到我们以您的最佳的价格和前置时间。[translate] ...
In the time- and frequency domains, though, we have to be a bit more careful. The first quantity we will want to check here is theskin depthof the materials in our model. The skin depth of a metallic material is usually approximated as ...
VectorsAscalarisaquantitywhichhasmagnitudebutnotdirectioninspace.Forexamplespeed,volume,energyareallscalarquantities.Avectorhasmagnitudeandadefinitedirectioninspace.Forexamplevelocity,force,magneticfieldareallexamplesofvectors.Notation.Inbooksandexaminationpapers,vectorsarewritteninboldtype.SothataandAarevectors.In...