1. The problem statement, all variables and given/known data A marching band member tunes her flute indoors in a 26 oC room. She then goes outside to play on a chilly 4 oC day in January. What percent change does this cause in the frequency played by her flute?) 2. Relevant equations v = f(Lambda) 3. The attempt at a solution I know the wavelength will not change with temperature. The speed of the sound does so I need to use an equation that uses wavelength, freq, and wave speed. I'm struggling with this. I calculated the speeds at 347.6 for 26 degrees C, and 337.4 for 4 degrees C. I chose the frequency at random as a 'C' she was tuning the flute to, the freq of this is 16.35. That's as far as I've gotten.