Physics lab help! I know it seems long but these are pretty simple questions (i
ID: 1769790 • Letter: P
Question
Physics lab help! I know it seems long but these are pretty simple questions (i suck at physics tho).Please help! 6.2.2 Waveform of a Pure Tone Obtain a pair of tuning forks and adjust them to be close (but not the same) in frequency. Strike one of the tuning forks with a rubber mallet near the middle of the tines, holding your ear close to hear the sound. The lowest and probably loudest tone is the fundamental frequency. Depending on how it is struck, you may hear some higher frequencies, called harmonics or overtones, as well. Experiment with your technique to minimize overtones. Do not hit the tuning fork with anything metal, as this produces more overtones and may damage the tines ·The pressure pulses of sound waves traveling through air cause a microphone's diaphragm to move in and out. This motion is translated into changes in the voltage of an electrical signal, which is recorded on the computer and displayed on a graph of voltage versus time. Attach a microphone to Channel One of the LabPro interface, which is attached by a cable to the computer. Open the file ToneExperiment. While holding the microphone near the opening of the wooden box beneath the tuning fork, strike the tuning fork with a mallet and aftera 1-2 second delay, click the Collect button in the toolbar or hit Return on the keyboard. A wavy line representing the sound should appear on the graph. You can change the scale of each axis by clicking on the highest or lowest tick mark and typing in a different number. To obtain precise x and y coordinates, select the Examine' tool (looks like x =?). As you move the cursor along the waveform, the sound level and time of each point is displayed in a small window. Use the arrows on each axis to scroll to the data that is outside the window 134 38Explanation / Answer
1) The values can be obtained from the package
2 &3) A tuning fork will always vibrate at a specific frequency when struck. The difference that you can hear is that when you hit with a hard object, more energy is transferred in the impact, making it ring louder, but with the same frequency. With a soft object like rubber, some energy is dissipated by the rubber. This makes the fork ring softer but still at the same frequency. The change that you can hear is the amplitude of the wave.
4) Depending what the resonant frequency of the second tuning fork is, the waveform will change. If the frequency is higher, the waveform will be much more crowded as the number of cycles in a single time period is much higher. If the resonant frequency is lower than the first one, the waveform will be much more spaced out.