2- The wavelength of a wave must change as its frequency is altered and the velocity remains constant. T True F False 3. A D E C Match the letters with the correct label for this diagram Questions Answer Choices 1. Wavelength A. A 2. Amplitude B. B 3. Equilibrium positions C. C 4. Crest to trough horizontal D. D distance E. E[Die given diagram shows a mass on a spring oscillating around its equilibrium point with simple haimonic motion. The mass has reached its maximum displacement down. The velocity and acceleration of the mass, respectively. are at a Maximum, Maximum Maximum, Minimum Minimum, Maximum Minimum, Minimum 7. A 660 Hz sound has a wavlength of 52.0 cm. The speed of sound is m/s (record your answer to three signficant figures).The effect of the straw in the glass of water in this picture is an example of A Reection 5- Refraction C- Diffraction 0- Visual Distortion 9- Successive wave pulses are sent along a string ever 1.5 s. If the time between each pulse increases to 3.0 s, then the frequency A halved 3- doubled 0- tripled 0- quadrupled In a cylinder that is closed at one end, the wave has a node at the open end. T True F False The 3rd harmonic in an open tube is a wave that is 1 1/2 wavelengths long. T TnJe F False The sound wave of an approaching siren will appear to increase in wavelength. T True F False