Answer
$\omega_d = 224~rad/s$
Work Step by Step
We can find the angular frequency at resonance:
$\omega_d = \frac{1}{\sqrt{L~C}}$
$\omega_d = \frac{1}{\sqrt{(1.00~H)(20.0\times 10^{-6}~F)}}$
$\omega_d = 224~rad/s$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.