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15 Cards in this Set
- Front
- Back
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Frequency |
= F F= cycles ÷ T (time taken to complete one cycle) |
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Period |
= T T = 1 ÷ F |
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Time |
Distance ÷ Speed (possibly used to find Speed of Sound without Temperature) t= d÷v (triangle is d on top, t on bottom right and v on bottom left) |
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Mach Number |
M# = mach number M= speed of object ÷ speed of sound (Triangle os object on top, speed of sound on bottom right and M# is bottomleft) |
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What Property Affects Loudness of Sound |
Amplitude |
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Wavelength |
= λ λ = v (speed) ÷ F |
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Bell Equation |
B2-B1=10log(I1÷I2) I = intensity |
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Speed Of Sound |
V = 332m/s + (.59m/s/c) T (temperature) |
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Beat Frequency |
Beat Frequency (fb)= number of beats heard ÷ T in seconds or Fb = F1(frequency) - F2 (if you don't know a frequncy swap it in fb places and minus by fb) |
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Octane |
Found by doubling frequency |
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Vibrating String |
note that there are four ways to found how much a string vibrates BUT all four ways have F1÷F2 in the equation |
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Resonant length in closed air collumns |
Resonant Length = 1/4 (one fourth)•λ
λ= resosant length ÷ 1/4 |
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Node |
= n Half of Wavelength( λ) |
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Resonant in Opem Air columns |
Resonant Length = 1/2 (half) • λ λ= resosant length ÷ 1/2 |
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Sound Frequency |
F2 = F1 (v ÷ v + or - vs) V = (speed of sound) Vs = speed of the the source You add vs of the source is moving away from the observe and subtract if the source is moving closer |
