$30\mathrm{.}40$ An L$-$R$-$C series circuit has L $=0\mathrm{.}400$ H$,$ C $=7\mathrm{.}00$F$,$ and R $=320.$ At t $=0$ the current is zero and the initial charge on the capacitor is $2\mathrm{.}80$ X $10$ C$.($a$)$ What are the values of the constants A and o$/$ in Eq$.(30\mathrm{.}28)?($b$)$ How much time does it take for each complete current oscillation after the switch in this circuit is closed? $($c$)$ What is the charge on the capacitor after the first complete current oscillation? odi ni bomun