Consider two frictionless inclined planes with the same vertical height. Plane 1 makes an angle of 30 degrees with the horizontal, and plane 2 makes an angle of 60 degrees with the horizontal. Mass m1 is placed at the top of plane 1, and mass m2 is placed at the top plane 2. Both masses are released at the same time. At the bottom, which mass is going faster?

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?

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

Ascientific blank must be testable and capable of being proven false?