1. The problem statement, all variables and given/known data The standing wave in the picture is oscillating at 100 Hz. What is it's velocity? 2. Relevant equations Velocity=(wavelength)(frequency) I believe is the equation that applies here. 3. The attempt at a solution The wavelength from the picture appears to be 20x10-2 meters. So velocity should equal (20x10-2)(100)= 20 meters per second But I know this answer is wrong. Where am I going wrong?