Follow the directions that are listed in each section and answer the questions as you go. Start by loading the PhET Titled "Wave on a String", there will be link below that will help you on this.

Link: https://phet.colorado.edu/sims/html/wave-on-a-string/latest/wave-on-a-string_en.html

d. Is this a transverse or longitudinal wave? e. How do you know what type of wave it is? f. Use your measurement from \"C\" above and the frequency (found in the green box) to calculate the velocity of this wave. Be sure to show your work and include units. =f.,1 9. Using the same frequency from the green box, calculate the period of your wave. Be sure to show your work and include units. h. Investigate the effect of changing the frequency (use the slider or the arrows to adjust the number). Use the ruler to measure Ihe wavelength that results from each change, then calculate the speed of the wave by multiplying frequency times the measured wavelength. frethency wavelength speed (1: = f '1) Hz cmjs i. When the frequency increased, what happened to the wavelength? j. When the frequency increased, what happened to the smed? k. How did changing the frequency impact the amplitude of the wave? (if you don't recall, try switching frequencies and observe the amplitude of the machine) Part Two: Wave Reflection When waves reach a boundary that blocks their path, they will reflect (bounce back). However, the way in which they reflect will vary. In the next section you will watch the action of a single wave as it makes its way to the end of the path and encounters a boundary. The wave pulse will return along the path as either an upright or inverted wave pulse. DEFINITIONS *upright means it is on the SAME side as before it reached the end *inverted means it is on the OPPOSITE side a. Begin by pressing the reset button in the bottom right corner. b. Select the PULSE option (top left corner) & change the end to a LOOSE END (top right). c. Change the dampening to none along the bottom. d. Click the green circle on the bottom of the wave rod to send ONE pulse down the string and observe what happens to the wave as it travels down the line and meets the pole at the end. i. When the wave comes back is the wave upright or inverted? e. Hit the RESTART button Restart (this will leave all previous settings the same). f. Change the end to a FIXED end in the top right corner. Leave everything else the same. g. Send another pulse down the medium and observe what happens to the wave as it travels down the line and returns. i. When this wave comes back, is it upright or inverted?Part THREE: Wave Interference Now you will investigate wave interference. Interference occurs when two waves occupy the same place at the same time. a. Hit the RESET button in the bottom right corner. b. Press PAUSE. c. Click to select the OSCILLATE wave form in the top left corner. d. Change the end back to a LOOSE END in the top right corner. e. Change the dampening to none in the green box at the bottom. i. What is the amplitude of this wave (read it from the green box): cm f. Select the slow motion option and click PLAY then press PAUSE after one wave has formed i. Use the ruler to measure the amplitude of this wave: cm ii . Does this value match the value in question `e. i above? g. Press PLAY again and observe how the behavior of the wave after the reflected wave collides with it. a. What is the amplitude of the collided waves? cm b. Is this interference constructive or destructive? i. How can you tell? Practice with Wave Interference For the following diagrams, determine whether they will produce constructive or destructive interference. What will the height ( in blocks) of the resulting wave amplitude be? Before Interference Constructive/Destructive? BEFORE INTERFERENCE Constructive/ Destructive? Resulting Amplitude? Resulting Amplitude? BEFORE INTERFERENCE Constructive/ Destructive? Before Interference Constructive/Destructive? Resulting Amplitude? Resulting Amplitude?In each set of waves below, the two waves at the left represent two waves traveling at the same time. Combine the two waves and show the results on the blank graphs provided: A. B.Part 1: Wave Properties Review a. Begin by using the following settings: i. FIRST press PAUSE so the simulation does not Fixed End begin when you are not ready. Loose End No End Manual ii. Then, select NO END option in the top right corner. Oscillate ili. In the top left corner, select OSCILLATE. Pulse This will open a new menu at the bottom. iv. Leave the amplitude, frequency & tension as they are but CHANGE the dampening to none and select the rulers. Amplitude Frequency 0.75 cm 1.50 Hz Damping Tension OOQ TimorReference Line b. Select SLOW MOTION and then press PLAY. * note: the marks on c. Once you have at least two wave crests, press pause and use the rulers to measure your wavelength and amplitude ( the ruler marks represent 0.2 cm each). 0 cm 2 3 Label the values on the image below: 1.2 Wavelength: 1.6 LITT Amplitude: cm ece