Answer
$T=0.0023s$
Work Step by Step
To find the period, use the relationship between period and frequency that $$T=\frac{1}{f}$$ Substituting the value of $f=440Hz$ yields a period of $$T=\frac{1}{440Hz}=0.0023s$$
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.