A very small charged block with a mass of 2.70 g is placed on an insulated, frictionless plane inclined at an angle of 17.0 with respect to the...

A very small charged block with a mass of 2.70 g is placed on an insulated, frictionless plane inclined at an angle of 17.0° with respect to the horizontal. The block does not slide down the plane because of a 460 N/C uniform electric field that points parallel to the surface downward along the plane. What is the charge on the block?