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Question 13 (1 point) 40 Listen The diagram below represents a periodic wave. B E Which two points on the wave represent a wavelength? OAC

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Question 13 (1 point) 40 Listen The diagram below represents a periodic wave. B E Which two points on the wave represent a wavelength? OAC O CD O BE OAEQuestion 14 (1 point) Listen A student records the following speeds for identical sound waves in three different mediums Underwater Air Wood Speed of Sound 1,484 m/s 343 m/s 3962 m/s Wave (m/s) What relationship could the student draw between the speed of sound and the type of medium based on this data? As the medium gets denser, the speed of the sound wave increases As the medium gets less dense, the speed of the sound wave increases The density of the medium does not affect the speed of the sound wave )As the medium gets denser, the speed of the sound wave decreasesQuestion 15 (1 point) Listen Three students with identical ropes were having a contest to see who could produce a wave with the fastest wave speed. Student 1 shook the rope to create a wave as shown below. Student 2 shook the rope harder than Student 1 and produced a wave with greater amplitude. Student 3 shook the rope faster than Student 1 and made a wave with higher frequency. Student 1 Student 2 Student 3 Rank the waves from the one with the greatest wave speed to the one with the least. Student 1 = Student 2 = Student 3 O Student 3 > Student 2 = Student 1 Student 2 > Student 3 > Student 1 Student 3 > Student 2 > Student 1Question 21 (1 point) Listen Use the scenario to answer the following question. The students at a concert notice a balloon near the large speakers moving slightly towards, then away from the speaker during the low-frequency sounds. The students then explain this phenomenon. Which explanation correctly identifies the correct wave type and reason behind the balloon's movement? The wave is a transverse wave because sound is made by regions of air being slightly more compressed followed by regions that are slightly less compressed. The wave is a transverse wave because sound is made by regions of air moving perpendicular to the sound wave. The wave is a longitudinal wave because sound is made by regions of air moving perpendicular to the sound wave. The wave is a longitudinal wave because sound is made by regions of air being slightly more compressed followed by regions that are slightly less compressed.Question 26 (1 point) 40 Listen You are driving down a highway at 75 km/h and right behind you is a police car also going 75 km/h with his siren on. If the police car's siren puts out a 600 Hz wail, what frequency do you hear? O >600 Hz 600 Hz

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