$(1$ point$)$

A certain voltage is $+10\mathrm{.}8$ V for $21\mathrm{.}7$ ms and $-10\mathrm{.}8$ V for the succeeding $21\mathrm{.}7$ ms and continues oscillating back and forth between these two values at $43\mathrm{.}4$ ms intervals.

The voltage is present across a $31$ resistor.

Over any $43\mathrm{.}4$ ms interval, find:

$($a$)$ the maximum value of the voltage

$($b$)$ the average value of the voltage

$($c$)$ the average value of the resistor current

$($d$)$ the maximum value of the absorbed power

$($e$)$ the average value of the absorbed power.