How is a magnetable to pick up bits of metal without actually touching them? A. The magnet is surrounded by an electric field that attracts the metal.
B. The metal exerts a repulsive force on the magnet
C. There is an invisible magnetic field around the magnet where it exerts magnetic force

A55-kg pilot flies a jet trainer in a half vertical loop of 1200-m radius so that the speed of the trainer decreases at a constant rate. knowing that the plane has a speed of 550 km/h at point a, and the pilot experiences weightlessness at point c (i. e., the normal force from the seat bottom is zero), determine (a) the deceleration of the plane, (b) the force exerted on her by the seat of the trainer when the trainer is at point b.