A hand qucikly moved up to continue the sine wave motion in ... The diagram shows that when water waves are reflected their direction changes, but their wavelength and frequency remain unchanged.

Sine wave Mathematically its shape is the projection on the vertical ... The second diagram below the top one shows the second harmonic with a pattern of one full wavelength (including a node in the ...

You need to know about these quantities used in waves - what they mean, the symbols used for them and the units used to measure them. Don't get confused with this quantity frequency. It is not a ...