英语翻译A dock worker loading crates on a ship finds that a 12 kg crate,initially at rest on a horizontal surface,requires a 69 N horizontal force to set it in motion.However,after the crate is in motion,a horizontal force of 54 N is required to

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英语翻译A dock worker loading crates on a ship finds that a 12 kg crate,initially at rest on a horizontal surface,requires a 69 N horizontal force to set it in motion.However,after the crate is in motion,a horizontal force of 54 N is required to

英语翻译A dock worker loading crates on a ship finds that a 12 kg crate,initially at rest on a horizontal surface,requires a 69 N horizontal force to set it in motion.However,after the crate is in motion,a horizontal force of 54 N is required to
英语翻译
A dock worker loading crates on a ship finds that a 12 kg crate,initially at rest on a horizontal surface,requires a 69 N horizontal force to set it in motion.However,after the crate is in motion,a horizontal force of 54 N is required to keep it moving with a constant speed.
The acceleration of gravity is 9.8 m/s2 .Find the coefficient of static friction between crate and floor.
Find the coefficient of kinetic friction.

英语翻译A dock worker loading crates on a ship finds that a 12 kg crate,initially at rest on a horizontal surface,requires a 69 N horizontal force to set it in motion.However,after the crate is in motion,a horizontal force of 54 N is required to
工人发现装载在船上箱子重12kg,最初静止在水平表面上,需要 69 N 的水平力使他移动.然而,箱子都在运动后,54 N的水平力就能使他匀速移动.
重力加速度的是 9.8 m/s2.求到箱子和地板之间的静摩擦系数.

12kg货物放在水平面上，69N的力能让它移动，移动后54N的力就可以保持匀速，重力加速度取9.8m/s2，求货物与地面间静摩擦系数

码头工人板条箱装在船上发现12公斤重的箱子，最初在休息在一个水平面上，需要一个69 N的水平力，它集运动。然而，后箱是运动，水平力54 N是需要保持在一个恒定的速度运动。
重力加速度为9.8 m/s2。找到箱与地面之间的静摩擦系数。
发现的动摩擦系数。...

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码头工人板条箱装在船上发现12公斤重的箱子，最初在休息在一个水平面上，需要一个69 N的水平力，它集运动。然而，后箱是运动，水平力54 N是需要保持在一个恒定的速度运动。
重力加速度为9.8 m/s2。找到箱与地面之间的静摩擦系数。
发现的动摩擦系数。

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英语翻译At a loading dock,each worker on the night crew loaded 3/4 as many boxes as each worker on the day crew.If the night crew has 4/5 as many workers as the day crew,what fraction of all the boxes loaded by the two crews did the day crew load dock dock 英语翻译A dock worker loading crates on a ship finds that a 12 kg crate,initially at rest on a horizontal surface,requires a 69 N horizontal force to set it in motion.However,after the crate is in motion,a horizontal force of 54 N is required to 英语翻译screen became white after the dock insertion with a tablet 英语翻译she was Lo 英语翻译lo que no consigas al momento es porque no te conviene,pero el destino hara lo suyo y tendras lo que deseas a su momento.. 翻译(a social worker) 英语翻译deixá-lo ser Lo worker 英语翻译.No lo sé exactamente a dónde voy,pero espero andar lejos. a worker in factory 还是a worker in a factory 英语翻译¿Te preocupa lo que ocurrió anoche?¡Tranquilo!Deja que te lo explique.Se presentaron aquí dos señores.Yo sólo conocía a uno de ellos. 英语翻译Conserva lo que tienes.olvida lo que te duele.lucha por lo que quieres...valora lo que posees.perdona a los que te hieren y disfruta a los que te aman.Nos pasamos la vida esperando que pase algo...y lo único que pasa es la vida,no entend 英语翻译Alguien espera a mi en el futuro.Haga lo que quiere hacer.Vaya lo que quiere ir.Es la vida tuya.Tenemos que conocer la vida. 看下面 I am a worker 对a worker提问 Miss Liu is a worker.(对a worker提问)