Diode D$1$ in the circuit below can be modeled as constant voltage drop VD$=0\mathrm{.}7$V$.$ For the zener diode D$2$ VZT$=6\mathrm{.}8$V @ IZT$=37$mA with rZ$=3\mathrm{.}5.$ Also C$=650$ F and R$=115.$N$.$B$.$ Remember that the RMS value of a sinusoidal voltage is its amplitude divided by the square root of two.

Calculate the average voltage at terminal Vo in V$.$

Calculate the ripple voltage at terminal Vo in mV$.$

Note: In this problem, you may only submit numerical answers accurate to $0\mathrm{.}02\%$ or better. $($i$.$e$.$ If $4$ is the correct answer, $3\mathrm{.}9999$ will be marked as correct, but $2+2$ will be marked as incorrect. $)$