The figure $($Figure $1)$ shows a thin rod of length $L$ with total charge $Q.$

Figure

Part A

Find an expression for the electric field strength on the axis of the rod at distance $r$ from the center. Express your answer in terms of the variables $L,Q,r,$ and appropriate constants.

Request Answer

Pa$$s

Venify that your expression has the expected behavior if $rL$

Express your answer in terms of variables $Q,r$ and constants $,{}_0.$

$E=$

Request Answer

Part C

Evaluate $E$ at $r=3\mathrm{.}2cm$ if $L=5\mathrm{.}0cm$ and $Q=4\mathrm{.}6nC,$

Express your answer to two significant figures and include the appropriate units.

$$