A 0.16 kg hockey puck is moving on an icy horizontal surface with a velocity of 8 m/s. A player strikes the puck with a hockey stick, after the impact the puck moves in opposite direction with a velocity of -15 m/s. If the puck was in contact with the stick for 0.005 s, what is the average force on the puck by the stick

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

The substances that are necessary for producing of certain hormones and that store and transport vitamins