https://phet.colorado.edu/sims/html/waves-intro/latest/waves-intro_en.html

PHET waves intro.Handout Provided by PHET. University of Colorado. Part 2. https://phet.colorado.edu/en/simulation/waves-intro m E I Click on the above link. Start simulation. Choose 543% Sound ' Click Side View, (bottom left) Choose the multi wave. Set Frequency and Amplitude in the middle. Click the Graph. Link: https://phet.colorado.edu/sims/html/waves-intro/latest/waves- intro en.html Choose the Speaker (sound) the bottom. Set to side view and the multiple waves. Put Frequency and Amplitude in the middle. Choose Play Tone and Waves. 1. You can have your sound on - but don't have it extremely loud. Push the green button for sound. What do you notice about the waves? 2. What do you notice about the speaker? 3. Now increase the frequency. How does the speaker movement change? 4. What happens with the pitch of the sound? the number of waves? What happens to the distance between waves (wavelength)? 5. Now decrease the frequency. How does the speaker movement change? 6. What happens with the pitch of the sound? the number of waves? What happens to the distance between waves (wavelength)? 7. Increase the amplitude. How does the speaker movement change? 8. Does the pitch change? What happens to the volume? 9. Decrease the amplitude. How does the speaker movement change? 10. Does the pitch change? What happens to the volume? SUMMARY: Describe what you see (or hear) for each situation (the first column is filled in for you) High Low High Low Short Long Amplitude Amh'tude Frauen F uuenc Wavelen_th Wavelen_th W \"'\"\"s"\"\"\" ----- 12. Determine the velocity of the sound. a) Use the ruler and the clock watch. Set Frequency and Amplitude in the middle. Click the Graph b) Pick up some point of two consecutive maximum values of the multi wave graph, use the ruler to determine the distance d between them. c) Using a timing device of the simulator, determine how long it takes to for the sound to complete 10 oscillations between these two consecutive maximum t. d)Ca1culate the period of one oscillation, e) Calculate the velocity of the sound , . f) Research in internet the velocity of the sound in the air. g) Calculate the percent error. h) Explain what you consider the possible causes of error in the experiment. Write the conclusion