1. Wave Characteristics

4. 1 What is a wave

6. In a transverse wave, the vibration of the individual particles of the medium is perpendicular to the direction of wave propagation. Motion of particles Motion of wave 2 categories of Waves

7. In a longitudinal wave, the vibration of the individual particles is parallel to the direction of wave propagation. Motion of particles Motion of wave v 2 Categories of Waves

9. Wavelength (λ) can be measured as the distance from crest to crest or from trough to trough. Amplitude (A) is the maximum amount of displacement of a particle on the medium from its rest position. The distance from rest to crest. How can you change the amplitude of a wave? 3 Wave Length and Amplitude

10. Consider the diagram below in order to answer questions #1-2. 1.The wavelength of the wave in the diagram above is given by letter _____. 2.The amplitude of the wave in the diagram above is given by letter _____. 3 Wave Length and Amplitude

11. Frequency ( f) is the number of waves passing a point in a given time. Unit is Hertz 1 Hz = cycle/second Period (T) the amount of time it takes a wave to pass. Unit is seconds 4 Frequency and Period https://www.youtube.com/watch?v=DpbnoLl3P5E

12. 1. A wave is introduced into a thin wire held tight at each end. It has an amplitude of 3.8 cm, a frequency of 51.2 Hz and a distance from a crest to the neighboring trough of 12.8 cm. Determine the period of such a wave. 0.0195 sec The period is simply the reciprocal of the frequency. In this case, the period is 1/(51.2 Hz) which is 0.0195 seconds 2. Frieda the fly flaps its wings back and forth 121 times each second. The period of the wing flapping is ____ sec. 0.00826 seconds The quantity 121 times/second is the frequency. The period is the reciprocal of the frequency. T=1/(121 Hz) = 0.00826 s 4 Frequency and Period

13. Wave Speed: the distance traveled by a given point on the wave (such as a crest) in a given interval of time. Wave speed does not depend on frequency, amplitude, or wavelength. Speed only depends on the medium through which the wave moves 5 The speed of a wave

14. A sound wave in an iron rod has a frequency of 350 Hz and a wavelength of 12.0 m. What is the speed of sound in iron? (v=fλ) 5 The speed of a wave

15. 6 Standing Waves Nodes Anti-Nodes

16. Wave Equations https://www.youtube.com/watch?v=DpbnoLl3P5E