Chapter 14 - Chapter 14 Sound Speed of Sound in Air v m 331...

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Chapter 14 Sound
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Speed of Sound in Air 331 m/s is the speed of sound at 0° C T is the absolute temperature 331 273 m T v s K =
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Doppler Effect A Doppler effect is experienced whenever there is relative motion between a source of waves and an observer. When the source and the observer are moving toward each other, the observer hears a higher frequency When the source and the observer are moving away from each other, the observer hears a lower frequency
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Doppler Effect, Case 1 (Observer Toward Source) An observer is moving toward a stationary source Due to his movement, the observer detects an additional number of wave fronts The frequency heard is increased
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Doppler Effect, Case 1 (Observer Away from Source) An observer is moving away from a stationary source The observer detects fewer wave fronts per second The frequency appears lower
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Doppler Effect, Case 1 – Equation When moving toward the stationary source, the observed frequency is
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Chapter 14 - Chapter 14 Sound Speed of Sound in Air v m 331...

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