1. A rectangular surface of length 3.25 cm and width 5.25 cm lies on the x-y plane at z=0. What is the (a) unit normal vector to this surface and (b) flux through this surface due to a uniform magnetic field of 0.65 T, directed along the +z-axis? 2. A rectangular surface of length 3.25 cm and width 5.25 cm lies on the y-z plane at x=0. What is the flux through this surface due to a uniform magnetic field of 0.65 T directed 60 from the + x-axis