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Sound Demonstration Presentation with Pictures. Created for CVCA Physics By Dick Heckathorn 15 May 2K + 5. 1.Sign - CAN YOU HEAR ME?. 2. Bells. 3. Red Plastic Strip. 4. Domino Analogy. 5. Acoustic Cannon Cardboard Box. 6a. Speed of Sound In Air. 6. Zero-Blaster.
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Sound DemonstrationPresentation with Pictures Created for CVCA Physics By Dick Heckathorn 15 May 2K + 5
23. Wood Whistle – 1 pipe • 1 Pipe – How many frequencies? • 1
23a. Whistles – 2 pipes • 2 Pipes – How many frequencies? • 1 • 1 1
Cracker Jack Double Whistle f1 = 2820 Hz f2 – f1 = 439.5 Hz f2 = 3259 Hz
Cracker Jack Whistle-Tape Recorder f1 = 402.8 Hz f2 – f1 = 1855 Hz f2 = 2258 Hz
24. Wood Whistle - 3 pipes • 3 Pipes – How many frequencies? • 1 • 1 1 • 1 1 1
25. Wood Whistle - 4 pipes • 4 Pipes – How many frequencies? • 1 • 1 1 • 1 1 1 • 1 1 1 1
26. Train Whistle - 5 pipes • 5 Pipes – How many frequencies? • 1 • 1 1 • 1 1 1 • 1 1 1 1 • 1 1 1 1 1