Answer
0.0000000055
Work Step by Step
$P=5.5E-9=5.5\cdot10^{-9}=0.0000000055$
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.