Protons are projected with an initial speed v 2 9.50 kim's from a field free region through a plane and into a region where a uniform electric field E = -720j N/C is present above the plane as shown In in the figure below, The initial velocity vector of the protons makes an angle & with the plane. The protons are to hit a target that lies at a horizontal distance of a = 1421 mm from the point where the protons cross the plane and enter the electric field, We wish to find the angle . at which the protons must pass through the plane to strike the target. 1 720 N/C Target Prion beun E -0 below the plane(8) Find the two possible values of the angle # (in degrees). (Enter your answers from smallest to largest) [f) Find the time interval during which the proton is above the plane in the Figure above for each of the two possible values of # (in degrees). (Enter your answers from smallest to sarpest. ) ns