Physics question-finding the magnitude of the electric field

[nba23]

Physics question--finding the magnitude of the electric field

Homework Statement

A charged insulating ball of mass 7.0g with a uniform charge of 1.5mC hangs from a light thread inclined at an angle of 8 degrees to the vertical. Calculate the magnitude of the electric field.

Homework Equations

q=mg/e

e= Fe/q

The Attempt at a Solution

I tried to use e=mg/q and i kept getting the wrong answer. I am not sure how or if i should use the given angle.Im confused because i don't know which formula i need to use for this question.

 

[Doc Al]

I tried to use e=mg/q and i kept getting the wrong answer.

That would apply if the ball were suspended solely by the electric field, but its not--there's a string attached.

I am not sure how or if i should use the given angle.Im confused because i don't know which formula i need to use for this question.

Which way does the field point? (I presume horizontally.)

What forces act on the ball? (Draw a diagram for yourself.) What must the net force be? Hint: Consider vertical and horizontal force components separately.