What are the characteristics of air pressure waves that we hear as sound?

Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

Which type of reaction is shown in this energy diagram ?