Pamela Kyle Crossley
 
 
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Infty 14 nov. 2020 la 10:03 
Suppose a charged particle is moving through a region of space in which there is an electric field perpendicular to its velocity vector, and also a magnetic field perpendicular to both the particle's velocity vector and the electric field. Show that there will be one particular velocity at which the particle can be moving that results in a total force of zero on it. Relate this velocity to the magnitudes of the electric and magnetic fields. (Such an arrangement, called a velocity filter, is one way of determining the speed of an unknown particle.)
林忍 21 mart. 2020 la 5:53 
                   ∧∧∩
                   ( ゚∀゚ )/
             ハ_ハ    ⊂   ノ    ハ_ハ
           ('(゚∀゚ ∩     (つ ノ   ∩ ゚∀゚)')
       ハ_ハ   ヽ  〈     (ノ  〉  /     ハ_ハ
     ('(゚∀゚∩   ヽヽ_)        (_ノ ノ    .∩ ゚∀゚)')
     O,_  〈                  〉  ,_O
       `ヽ_)                  (_/ ´
  ハ_ハ           ~~ have a nice day ~~          ハ_ハ
⊂(゚∀゚⊂⌒`⊃                        ⊂´⌒⊃゚∀゚)⊃
Pamela Kyle Crossley 21 dec. 2018 la 2:30 
2017年前的游戏效果全开没什么问题
BADASSBOT 5 dec. 2018 la 22:15 
你电脑跑得动巫师三吗?
林忍 30 nov. 2018 la 3:21 
怎么把ns卖了?草
BADASSBOT 30 nov. 2018 la 0:27 
怎么45级了?把NS卖了原来是为了升级?震惊!