A 2 kg hockey puck is pushed with a force of 30 N on a frictionless icy surface to get the puck moving. If the puck is now traveling with a velocity
of 15 m/s how much (if any) force will it take to keep it at this constant
speed if the surface has no friction? (SP2A1)

Blank liquids and gases exert a buoyant force on objects placed in them

Which transition by an electron will release the greatest amount of energy? oa ob oc od

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question