What effect will the north pole of one magnet have on the north pole of another magnet. a. repulsive b. attractive c. combative d. no effect 2.why are paperclips attracted to magnets? a. the contain silver b. they contain aluminum c. they contain tin d. they contain iron 3.what is the simplest requirement for an electromagnet? a. a coil of electrified wire wrapped b. a bar magnet and a power source c. a coil of electrified wire d. a length of electrified wire for 20pts

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.