A particle possessing $q=6\mathrm{.}25C$ of charge and a mass of

$m=7\mathrm{.}55g$ is fired at a speed of $v=255c\frac{m}{s}$ between two

horizontal charged plates of length $L=44\mathrm{.}7cm.$

Assume that the electric field between the plates is uniform

and has a constant value of $E=2370\frac{N}{C},$ directed upwards.

Calculate the distance $y$ by which the charge falls below a

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straight$-$line path when it reaches the end of the plates.

Assume a gravitational acceleration of $g=9\mathrm{.}81\frac{m}{s^2}.$

What field strength will allow the particle to pass between the

plates along a straight path?