Mechanical waves

Choose the type of wave in the image.

• Progressive wave

• Standing wave

1) Wave profile does not move.

2) No energy transfer.

3) Permanent nodes and antinodes exist.

4) Different amplitude between two neighbouring nodes.

These descriptions referring to ?

• Standing wave

• Progressive wave

General expression for a standing wave is :

• 2A cos kx

This diagram referring to :

• air column (open ends)

• air column (closed pipe)

• stretched string

This diagram referring to :

• stretched string

• air column (closed pipe)

• air column (open ends)