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A series RLC circuit has R = 400 ?, L = 1.35 H, C = 3.8...

A series RLC circuit has R = 400 ?, L = 1.35 H, C = 3.8 ?F. It is connected to an AC source with f = 60.0 Hz and ?Vmax = 150 V.
Suppose the frequency is now increased to f = 93 Hz, and we want to keep the impedance unchanged.

(a) What new resistance should we use to achieve this goal?
R = ____ ?

(b) What is the phase angle (in degrees) between the current and the voltage now?
? = ____°

(c) Find the maximum voltages across each element.
?VR = ____V
?VL = ____V
?VC = ____V

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