Sound Waves, Intensity level, Decibels, Beat Frequency, Doppler Effect, Open Organ Pipe - Physics
This physics video tutorial explains the concept of sound waves and how shows you how to calculate the wavelength, frequency, and velocity of sound waves. It also shows you how to calculate sound intensity, intensity level in dB or decibels, beat frequency, and how to solve problems with open and closed organ pipes / tubes plus the doppler effect. This video contains the formulas and equations that you need for this chapter / topic as well as many examples and practice problems.
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Here is a list of topics:
1. Sound Waves - Transverse vs Longitudinal Waves
2. Pressure Waves - Compression vs Expansion / Rarefaction
3. Speed of Sound vs Density, Elastic Modulus, and Temperature Equation / Relationship
4. Speed of Sound Calculations in Helium gas and in Seawater
5. Audible Range Frequency - 20 Hz to 20,000 Hz
6. Subsonic, Supersonic, Infrasonic, and Ultrasonic Vocabulary Terms
7. Pitch vs Loudness - Frequency vs Amplitude
8. Mechanical Waves - Trough, Crest, Period, Frequency - Cycles Per Second
9. Sound Intensity Formula - Power, Surface Area & Inverse Square Law
10. Power, Work, Energy and Time Calculations - Intensity
11. Units of Intensity - Watts per Square Meter
12. Sound Intensity Level Equation - Decibels - dB & Loudness
13. Intensity, Amplitude, Frequency, Speed and Density Formula
14. Threshold of Hearing Reference Intensity Level
15. Vibrating Molecules - Air Displacement vs Pressure
16. Standing Waves on a String Formulas
17. Wave Velocity, Tension Force, Linear Density of String / Wire - Mass Per Unit Length Problems
18. Nodes and Antinodes Physics
19. Fundamental Frequency and Harmonics Explained
20. Harmonic Motion, Overtones, and Octaves of Middle C
21. String Length, Wavelength and Frequency Calculations
22. Vibrating Columns of Air - Flute, Clarinet, and Pipe Organs
23. Pipe Organs - Closed at one end and open at both ends
24. Standing Waves - Open Tubes and Closed Tubes - Air Columns
25. Displacement of Air vs Pressure - Standing Wave, Nodes, & Loops
26. Odd Harmonics For Closed End Tube / Organ Pipe
27. Constructive and Destructive Interference
28. Principle of Superposition - Two Speakers Problem
29. Beat Frequency Physics
30. Doppler Effect - Sound in Motion - Frequency Shift
31. Wave Crest - Compression and Expansion -
32. Frequency of Observer and Source
33. Source Moving Toward and Away From Observer - Increasing vs Decreasing Frequency
34. Doppler Effect Problems - Police Car, Siren of Ambulance Truck, Direction of Moving Object or Observer, Speed of Sound in Seawater, and Reflected Wave Problem
35. Successive Harmonics and Fundamental Frequency
36. Frequency and Temperature Calculations
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