2. Do your best to strike each tuning fork with an equal force so that they vibrate with equal amplitudes. Is one louder than the other one? Explain your results. Are these the results you expect? Explain. 3. What effect did changing the tuning forks (frequency) have on the length of the air column? Part C - Measuring the frequency of sound Determine the frequency of (as indicated by your instructor) Label On the Sound Source (if there is one) Time for ten waves seconds Time for one wave seconds Experimental Frequency Hertz (waves/sec) Theoretical Frequency Hertz (waves/sec) Error (feng - fame) Hertz (vib/ see) % Error = (Error + fans) x 100 1. Explain why your results might be different from the theoretical frequency. Provide an explanation that includes your numerical results and compares them to the theoretical results. In other words, if your results are greater than expected, what could cause this to occur? If your results are less than expected, what could cause this? Provide explanations. 2. The wave pattern you see on the computer is a graphical representation of the sound. What is plotted on the vertical axis? What is plotted on the horizontal axis?_ Typically, we say the vertical axis is the dependent variable and the horizontal axis is the independent variable. Is this true in this case? Explain your answer. Part D Measuring Loudness Set the decibel meter to MAX HOLD. When the loudest sound level is reached the number will be held until something louder comes along. To re-set the meter for the next item turn the MAX HOLD off and then back on. Decibel Meter Settings: Auto, A weighting, Slow Response. Fill in the number of decibels for the following situations