(Solution) - An alternating source with a variable frequency a capacitor -(2025 Original AI-Free Solution)

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An alternating source with a variable frequency, a capacitor with capacitance C, and a resistor with resistance R are connected in series. Figure gives the impedance Z of the circuit versus the driving angular frequency w d; the curve reaches an asymptote of 500?, and the horizontal scale is set by w d s = 300 rad/s. The figure also gives the reactance XC for the capacitor versus w d. What are?
(a) R and
(b) C?