$($a$)$ Find the net charge on the shell.

It the radius of the shell was reduced to zero, would that affect the field at $17\mathrm{.}6$ cm from the axis? nC

$($h$)$ Find tho olectric field at a point $4\mathrm{.}00$ cm from the axis, measured radially outward from the midpoint of the shell.

kN$/$C