please answer with solutions thank you.

read this: https://sg.docs.wps.com/l/sIDTNstgyz_OikAY

that is the reference

TEST 1

6. What will happen to the wavelength as a wave travels into a medium in which its speed increases? A. decrease C. remains the same B. increase D. it will increase and decrease after 7. What is transported when a sound wave travels from one place to another? A. air B. density C. energy D. wave

9. What happens to the speed of the wave if its frequency doubles and the wavelength remains the same? It ____________. A. doubles C. is halved B. quadruples D. remains unchanged

15. The frequency of a wave increases when the speed remains the same. What happens to the distance between two consecutive crests? It ______________. A. increases C. stays unchanged B. decreases D. increases first and then decreases

Test 2.

For questions 2 and 3, refer to the diagram below. 0.080 m 0.060m 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 m5. 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 D. 90 cm11. 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 0.0 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 0 Note: This wave travels in 6 seconds. -4 m 24 m Amplitude Period Frequency Speed of wave A. 2cm 1s 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/s13. 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