If the amplitude of the two waves are 3 units and 1 unit respectively. Show by the principle of super-position that the ratio of the amplitudes of the stationary wave at an antinode and node respectively is 2:1.

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