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Assume that the charged particle is a proton of charge q=+e. The proton is released from
rest at the positive plate. In this case, each of the two oppositely charged plated which are d=2
cm apart has a charge per unit area of σ=5μC/m2 . what is the speed of the protons as it strikes the
second plate?

a) 1.47 x 106
b) 2.25 x 107
c) 2.89 × 108
d) 7.65 x 107
e) 9.26 × 108
t=0
v=0
qE
d
t
E

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