871 The circuit in Figure P871 is operating in the sinusoidal steady-state. (a) If vSt = 2...

8–71 The circuit in Figure P8–71 is operating in the sinusoidal steady-state.

(a) If vSðtÞ = 2 cos 2128t V, find the output vOðtÞ.

(b) At what frequency is the magnitude of the output voltage equal to half of the magnitude of the input voltage in the circuit of Figure P8–71? Use Multisim and do an ac sweep from 1Hz to 100 kHz, and then use Grapher View’s cursor to find the desired frequency.

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100 100 w + + 4700 pF vs(f) vo(t) FIGURE P8-71