1.) A flat square surface with side length equal to 2.5 m is oriented parallel to the yz-plane and therefore has a normal vector along the x-direction. If there is a uniform and constant electric field given by E = 3.0 + 7.5, what is the total electric flux through the surface. 2.) An infinite line of charge with charge density = 4.5 pC/m is placed along the z-direction. A cylindrical gaussian surface is placed concentric to the line of charge with a radius of 50 cm and a length of 2.0 m. What is the total flux through the gaussian surface. 3.) A solid sphere of charge with a radius of 20 cm is placed with its center at the origin has a total charge of 25 pc. What is the electric field at a radius of 30 cm? 4.) A solid sphere of charge with a radius of 20 cm is placed with its center at the origin and has a total charge of 25 pc. What is the electric field at a radius of 10 cm? 5.) The charge distribution below shows 3 point charges where Q = 2 pC in the x,y- plane. What is the voltage (electric potential) at the origin if a = 2.0 cm and b = 3.0 cm? T -3Q +Q a +20 X