1. The problem statement, all variables and given/known data The distance between a node and the nearest antinode of a standing sound wave in air is 7.55 m. What is the frequency of this wave? (Use 343 m/s as the speed of sound in air.) 2. Relevant equations velocity = wavelength * frequency 3. The attempt at a solution I started by trying to find the wavelength which I deemed to be 7.55*2 = 15.1 I then just plugged it into the equation above, which got me to: 343 = 15.1 * frequency I found the frequency to be 22.72 Hz, but apparently it's wrong and I don't understand why.