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In mathematics, the moments of a function are certain quantitative measures related to the shape of the function's graph.If the function represents mass density, then the zeroth moment is the total mass, the first moment (normalized by total mass) is the center of mass, and the second moment is the moment of inertia.
The moment of force, or torque, is a first moment: =, or, more generally, .; Similarly, angular momentum is the 1st moment of momentum: =.Momentum itself is not a moment.; The electric dipole moment is also a 1st moment: = for two opposite point charges or () for a distributed charge with charge density ().
Moment (mathematics), a concept in probability theory and statistics Moment (physics) , a combination of a physical quantity and a distance Moment of force or torque
Ray, Goodman & Brown is an American R&B vocal group.The group originated as the Moments, who formed in the mid-1960s and whose greatest successes came in the 1970s with hits including "Love on a Two-Way Street", "Sexy Mama", and "Look at Me (I'm in Love)". [1]
The nth moment about the mean (or nth central moment) of a real-valued random variable X is the quantity μ n := E[(X − E[X]) n], where E is the expectation operator.For a continuous univariate probability distribution with probability density function f(x), the nth moment about the mean μ is
The moments of inertia of a mass have units of dimension ML 2 ([mass] × [length] 2). It should not be confused with the second moment of area, which has units of dimension L 4 ([length] 4) and is used in beam calculations. The mass moment of inertia is often also known as the rotational inertia, and sometimes as the angular mass.
A moment (momentum) is a medieval unit of time. The movement of a shadow on a sundial covered 40 moments in a solar hour , a twelfth of the period between sunrise and sunset . The length of a solar hour depended on the length of the day, which, in turn, varied with the season . [ 1 ]
Moments (Chinese: 朋友圈 pinyin: péngyǒu quān) is a function of the smartphone app WeChat, launched on 19 April 2012 in the WeChat version 4.0. It serves new social-networking functions for Wechat users.