`As waves pass by a duck floating on a lake, the duck bobs up and down but remains in one place. Explain why the duck is not carried along by the wave motion. Sketch each of the following waves on a spring that is attached to a wall at one end: a pulse wave that is longitudinal a periodic wave that is longitudinal a pulse wave that is transverse a periodic wave that is transverse How far does a wave travel in one period? If you were to shake the end of a rope up and down three times each second, what would be the period of the waves set up in the rope? What would be the frequency? A person standing in the ocean notices that after a wave crest passes by, ten more crests pass in a time of 120 s. What if the frequency of the wave? Waves can be represented by graphs (cake note of the coxes of each graph)- 0.2 0.2 :) What is the wavelength of this wave? 0.1 0.1 b) What is the period of this wave? 20 4.0 6.0 10 0 0.0 0.1 1.0 2.0 3.0 4.0 50 :) What is the amplitude of this wave? 0.1 0.2 0.2 d) What is its speed? 03 7- Look at the standing wave below. How many nodes does it have? How many antinodes? Label a node. Label and antinode. A wave of amplitude 0.30 m interferes with a second wave of amplitude 0.20 m. What is the largest resultant displacement that may occur? 9. Using the principle of linear superposition, drew the resultant waves for each example below. 10. Which waveform below is the resultant waveform? 11. Anthony sends a series of pulses of amplitude 24 om down a string that is attached to a post at one end. Assuming the pulses are reflected with no loss of amplitude, what is the amplitude at a point on the string where the two pulses are crossing if The string is rigidly amached to the post? The end at which reflection occurs is free to slide up and down? 12. A wave of 0.75 m interferes with a second wave of amplitude 0.53 m. Find the amplitude of the resultant wave if the interference is constructive. Find the amplitude of the resultant wave if the interference is destructive. 13. Can more than two waves interfere in a given medium? 14. What is the resultan