As the mass oscillates on a spring, when is displacement at its maximum and velocity equal to zero? a. when it is partially compressed b. when it is at the equilibrium position c. when it is fully stretched d. when it is at near rest

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water