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Instruction: Write the letter of the correct Assessment answer on a separate sheet of paper. 1. Which of the following is not a characteristic of mechanical waves? They A. transport energy B. are created by a vibrating source C. consist of disturbances or oscillations of a medium D. cause the particles of the medium to have a net movement forward For questions 2 and 3, refer to the diagram below. 0.080 m 0.060 m 2. What is the amplitude of the wave in the diagram? A. 0.03 m B. 0.04 m C. 0.05 m D. 0.06 m 3. What is the wavelength of the wave in the diagram? A. 0.030 m B. 0.040 m C. 0.060 m D. 0.080 m 4. A wave X meters long passes through a medium with a speed of Y meters per second. How could the frequency of the wave be expressed? A. Y/(X cycles/ sec) C. X(Y cycles/ sec) B. X/(Y cycles/ sec) D.(X + Y) cycles/ sec 5. If the distance from point A to point B in the diagram is 60 cm, then what is the wavelength of the wave? A. 20 cm B. 40 cm C. 60 cm AA D. 90 cm 24 For questions 6-8, refer to the problem below. A student takes a 30.0 m-long string and attaches one end to the wall in the physics lab. The student then holds the free end of the rope, keeping the tension constant in the rope. The student then begins to send waves down the string by moving the end of the string up and down with a frequency of 2.00 Hz. The maximum displacement of the end of the string is 20.00 cm. The first wave hits the lab wall 6.00 s after it was created. 6. What is the speed of the wave? A. 1.00 m/s B. 3.00 m/s C. 5.00 m/s D.7.00 m/s 7. What is the period of the wave? A. 0.25 s B. 0.50 s C. 0.75 s D. 1.00 s 8. What is the wavelength of the wave? A. 2.44 m B. 2.50 m C. 2.55 m D. 2.60 m 9. How long does it take a wave of frequency 0.2 Hz and wavelength 2 m to travel along a rope of length 4 m? A. 4 s B. 6 s C. 8 s D. 10 s 10. The distance between the two troughs of the water surface waves is 20 m. An object floats on the surface of the water so that it experiences the vibration motion. If the time to travel one vibration is 4 seconds, then what is the velocity of wave in m/s? A. 5 B. 6 C. 7 D. 8 11. The graph below displays the displacement of a point in one medium as a function of time when a wave passes through the medium. If the wavelength is 6 meters, then what is the speed of the wave propagation? A. 3 m/s B. 6 m/s C. 8 m/s D. 12 m/s 12. Based on the figure below, determine the amplitude, period, frequency and speed of the wave. Which of the following data is correct? 4 m A Note: This wave travels in 6 seconds -4 m 24 m Amplitude Period |Frequency Speed of wave A. 2cm 2 Hz 2 m/s B. 4cm 1.5 s 3 Hz 2.5 m/s C. 4 m 2 s 1.5 Hz 3 m/s D. 4m 2 s 0.5 Hz 4 m/s 13. When a damped harmonic oscillator completes 100 oscillations, its amplitude is reduced to 1/3 of its initial value. What will be its amplitude when it completes 200 oscillations? A. 1/9 B. 1/6 C. 1/5 D. 2/3 14. How are springs in cars damped? A. by tires B. by engine C. by brake pedals D. by shock absorbers 15. What category of waves do transverse and longitudinal fall under
