Mr. wang works in a recycling center. recyclable materials arrive at the center mixed together. workers use magnets to separate steel cans from other items. which two statements are true about the force between a steel can and a magnet? a. gravity pushes the can toward the magnet. b. the force between the can and the magnet is a noncontact force. c. the attraction between the can and the magnet is a pull. d. the attraction between the can and the magnet is a push.

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j