UNIT OS: Mechanical Waves BCLN PHYSICS 11 - Rev. Feb. 2019 UNIT 08. Mechanical Waves BCLN PHYSICS 11 - Rev. Feb 2019 Expert: 2. Now completely overlap the two pulses and sketch the combined wave: Superposition: In this section we will examine how waves combine when they cross paths. In particular, we will look at how the individual amplitudes combine as they cross. This is known as the Principle of Superposition. Animate Open up the simulation below: https:/ophysics.com/w2a.html Pause 1. Constructive Interference: Create the situation depicted: Show Purse Sum AU VVW W 3. Define Constructive Interference and describe how you determine the amplitude of the Slide the pulses together so they "just" overlap as shown below. Then sketch the combined combined pulse based on the individual amplitudes: wave directly onto the diagram below (the Pulse Sum). Animate Pause UNIT 08: Mechanical Waves BCLN PHYSICS 1 1 - Rev. Feb. 2019 Show Purse Sum 4. Destructive Interference: Create the situation depicted: Animate Sum of the Pulses Pause Move Pulses Marialy Page 8 of 16 Show Pulse Sum ABC Sum of the Purses 5. The two waves overlap between A and C (labelled above). For each vertical line at locations A, B, and C sum up the amplitudes of the two original waves. Plot this SUM on the line below at locations A, B, and C. Sum at A: Sum at B: Sum at C: 6. Define Destructive Interference and describe how you determine the amplitude of the combined pulse based on the individual amplitudes