How far can a p- and s-wave travel in 10 minutes? The x-axis is in 1000 km. The y-axis is in minutes.

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?

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?

If the area of a square has increased by a factor of 16, by how much has each side increased?