Measuring the Frequency of a Resonating Tube In the videos, you saw that you can predict the frequency at which a resonating tube will vibrate (and emit sound) by simply measuring the length of the tube. In this experiment, we will be measuring the lengths of several tubes and predicting the frequencies that they will emit. We will then measure the actual resonating frequencies of the tubes using a spectrum analyzer and comparing those measured frequencies to our predicted frequencies. Your predicted frequency will be calculated from the length of the tube (L) and the velocity of sound in air (v) using the following formula f = V/4L You will then compare your predicted frequencies to the measured frequencies using: Percent Error = X 100 Velocity of Sound: v = 343 mfs @ i = 20C Tube Tube Tube Calculated Measured Percent Error Length Length Frequency Frequency (Hz) (%) (cm) (m) f: vf4L (Hz) Small Medium Large Jumbo