Cameron works in a junkyard, and he needs a machine that can lift scrap metal and then let go of it Which type of magnet does Cameron needand why?
A.
Cameron needs a magnet like magnet 1 because it can pick up all materials
B
Cameron needs a magnet like magnet 2 because it is stronger than magnet 1
C.
Cameron needs a magnet like magnet 2 because it does not need electricity
D
Cameron needs a magnet like magnet 1 because it can be turned on and off

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.