(Solved): The electric field between the plates of a parallel-plate capacitor is horizontal, unif ...

The electric field between the plates of a parallel-plate capacitor is horizontal, uniform, and has a magnitude E. Asmall object with a charge of $$?2.12?\mathrm{C}$$ is attached to the string. The tension in the string is $$0.440\mathrm{N}$$, and the angle it makes with the vertical is $$16^{?}$$. What is the mass of the object? What is the magnitude of the electric field?