A girl ties a toy airplane to the end of a string and swings it around her head. What is the plane's angular speed if the plane moves through an angular displacement of 3.3 rad during 1.5 s?

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