Part A

A large electroscope is made with "leaves" that are $78-cm-$long wires with tiny $47g$ spheres at the ends. When charged, nearly all the charge resides on the spheres.

If the wires each make a $26$ angle with the vertical $($Figure $1),$ what total charge $Q$ must have been applied to the electroscope? Ignore the mass of the wires.

Express your answer to two significant figures and include the appropriate units.