Standing wave interference pattern problem

[DarkVoid]

In a standing wave interference pattern, what distance constitutes a wavelength?

For complete destructive interference, what must be true of the wavelengths and amplitudes of the 2 waves?

Thx

 

[DarkVoid]

Waves?

In a standing wave interference pattern, what distance constitutes a wavelength?

For complete destructive interference, what must be true of the wavelengths and amplitudes of the 2 waves?

 

[Gombay]

In a standing wave interference pattern, what distance constitutes a wavelength?

For complete destructive interference, what must be true of the wavelengths and amplitudes of the 2 waves?

Wavelength - Disatance from crest to an adjacent crest or trough to an adjacent trough. (They will be the same length)
For complete destructive interference the wavelengths and amplitudes must be the same and the troughs of one wave must line up with the the crests of the other (and vice versa).

 

[billiards]

For complete destructive interference the waves must have exactly the same frequency content and power spectrum (amplitudes of all the different frequency components) and the waves must be exactly out of phase.