A pressure gauge connected to the fuel pressure test fitting (Schrader valve) shows a pressure lower than spec. Technician A says that the low pressure is likely to be caused by a faulty fuel pressure regulator. Technician B says the fuel pump is possibly at fault. Who is right?

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?