P H Y S I C S Chapter 7: Waves and Vibrations Section 7C: Wave Properties and Sound
P H Y S I C S Chapter 7: Waves and Vibrations Section 7C: Wave Properties and Sound.
Dec 16, 2015
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
- Slide 1
- P H Y S I C S Chapter 7: Waves and Vibrations Section 7C: Wave Properties and Sound
- Slide 2
- Mechanical Wave A disturbance that travels through a medium i.e. Sound requires medium of air or water
- Slide 3
- What is a Wave?
- Slide 4
- Mechanical Wave Waves transfer energy and not matter
- Slide 5
- Sine Wave Wave motion can be mathematically described by a sine or cosine wave
- Slide 6
- Two Types of Waves Transverse disturbance is perpendicular to motion Longitudinal disturbance is parallel to motion
- Slide 7
- Slinky Demonstration Energy is transported not matter Transverse vs. Longitudinal
- Slide 8
- Parts of a Wave Wavelength () distance in one cycle Amplitude displacement Crest high point Trough low point Note: Lambda
- Slide 9
- Sound Waves and Tuning Fork Demonstration Frequency Pitch Amplitude Volume Note: Frequency is wave cycles per second (Hz) 512 Hz 1024 Hz 2048 Hz
- Slide 10
- Speed of Sound Note: Sound travels faster in solids, liquids and gas respectively TempSpeed -10 o C325 m/s 0 o C331 m/s 10 o C337 m/s 20 o C343 m/s 30 o C349 m/s MediumSpeed Air (20 o C)343 m/s Helium972 m/s Alcohol1,143 m/s Water1,493 m/s Iron5,130 m/s Pyrex Glass5,640 m/s Diamond12,000 m/s
- Slide 11
- Wave Speed Equation
- Slide 12
- Frequency Equation
- Slide 13
- In-Class Problem #1 Determine the (a) number of waves, (b) wavelength, (c) amplitude, (d) frequency, (e) period and (f) wave speed.
- Slide 14
- In-Class Problem #1 Determine the (a) number of waves, (b) wavelength, (c) amplitude, (d) frequency, (e) period and (f) wave speed. waves = 2 = 0.04 m A = 0.02 m f = 0.4 Hz T = 2.5 s v = 0.016 m/s
- Slide 15
- In-Class Problem #2 A toy boat in the ocean rises every 3.0 s as wave crests pass by. The distance between wave crests is 5.0 m. Determine the (a) frequency, (b) period, (c) the wave length and (d) how fast are the waves traveling.
- Slide 16
- In-Class Problem #2 A toy boat in the ocean rises every 3.0 s as wave crests pass by. The distance between wave crests is 5.0 m. Determine the (a) frequency, (b) period, (c) the wave length and (d) how fast are the waves traveling. f = 0.33 Hz = 5.0 m T = 3.0 s v = 1.65 m/s
- Slide 17
- Assignment Problem Set 7C 7C-7D Quiz (Wave Properties and Behavior)
Related Documents
