A large positively charged object with charge $q_{+}=3\mathrm{.}75C$ is brought near a negatively charged plastic ball suspended from a string of negligible mass. The suspended ball has a charge of $q_{-}=-48\mathrm{.}3nC$ and a mass of $14\mathrm{.}5g.$

What is the angle $$ that the string makes with the vertical when the positively charged object is $19\mathrm{.}5cm$ from the

$=$

suspended ball?