A shopping cart is given an initial velocity of 2.7 m/s to the east and constantly accelerates at 3.1 m/s^2. What is the cart's displacement after the first 4.5 s of its motion?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two

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?