PLEASE ANSWER PLZ TEST
simple machine
(a) Describe a concept in this chapter that
you already knew something about.
(b) When and where did you first learn about
this idea?
(c) Describe similarities and differences
between what you already knew about the
idea and what you just learned about it.

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 volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

Energy flows from the producer level to the level. is called