- #1
Minki
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Homework Statement
Two horizontal plates connected to 600v with the positive at the top.
A positively charged ion between the plates moves downwards under the
force of the field (neglect gravity).
The ion has charge 1.6×10^–19C and mass 2.3×10^–26kg.
Show that the kinetic energy of the ion is 4.8x10-17 J at the instant
that it reaches the bottom plate.
Homework Equations
KE = eV
The Attempt at a Solution
eV = 1.6x10^-19 x 600 = 9.6x10^-17 J.
This is exactly twice the number I am trying to reach and I can't
get any further. The problem is that I don't understand the significance
of the ion reaching the bottom plate.
Thanks.
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