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,
the standard deviation being the square root of the following: the sum of the squares of the variation from the mean of each sample divided by the square of the number of samples minus one. On the initial reading (NMEAS equals 0), if the standard deviation as measured is greater than ...
(orlength)isunity.Theunitvectorparalleltoaisdenotedbyˆa.Clearlyˆa=aa=1|a|abecausethisvectorisparalleltoaand|ˆa|= aa =|a|a=aa=1.RectangularResolutionofVectors.WetakeanoriginOandasetof3fixedaxesOx,OyandOzwhicharemutuallyperpendicular.TheaxesOx,OyandOzinthatorderformaright-handedorthogonal...
Which object has a mass of 1 kilogram? A truck, table, paper clip or dictionary? Estimates: The exact measurement of a physical quantity gives us the size or magnitude of the physical quantity within certain measurement uncertainty. However, we can guess and estimate the ...
aWhich of the following statements about computerized monetary systems is NOT supported by the passage? 正在翻译,请等待...[translate] a我是初学者,你知道的 正在翻译,请等待...[translate] a首先,你能迷住我 First, you can charm me[translate] ...
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond A page can have only one server-side Form tag.-- What is the error ? A potentially dangerous Request.Form value...
In a lab, the mass of object A is 52 kg. What does Object A weigh? You can find your own mass in kg with the following information: 1.0kg weighs about 2.2lb on earth. What is your mass in kg? What is your weight in newtons? What is ...
the ground contact surface in a first direction, and a first wheel slip degree of the vehicle wheel; a second input section to set a second input which is a ratio of a second wheel force acting on the vehicle wheel in the ground contact surface in a second direction different from the ...
In a two-body collision, if the kinetic energy of the system is conserved, then which of the following best describes the momentum after the collision? \\ A. must be less B. must also be conserved C. may also be conserved D. is doubled i...