1. The problem statement, all variables and given/known data Sound Wavelength From String During a concert a pianist hits a key that sets up a standing wave in a piano string that is vibrating in its fundamental mode. The string is 0.5 m long, has a mass density of 0.002 kg/m and is held under a tension of 120 N. What is the wavelength of the sound wave heard by the listener? The speed of sound in air is 343 m/s. v (sound) = 343 m/s L (length) = 0.5 m d (mass density) = 0.002 kg/m T (tension) = 120 N λ (wavelength) = unknown 2. Relevant equations v = f*λ = ω/k f = frequency k = spring constant ω = angular frequency v = √(T/(m/L)) T = force of tension m = mass L = length 3. The attempt at a solution At first I attempted a solution using the second equation provided, however I am not quite sure what I would be solving for since the speed of sound in air is provided. Using the second equation I find the speed of the wave itself, but I am not sure how to apply the two speeds to finding the wavelength of the sound wave? Please help me with this problem!