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7.<br />
v gas =<br />
BUNYI Gelombang Longitudinal<br />
nada > 20.000 Hz (Ultrasonic) keras / lemah tergantung Amplitudo<br />
Bunyi 20 Hz – 20.000 Hz<br />
desah < 20 Hz (Infrasonic) tinggi/rendah tergantung Frekuensi<br />
Nada Sumber<br />
1. Dawai<br />
=<br />
γ<br />
ρ<br />
P<br />
RT<br />
γ<br />
M<br />
ND<br />
2 Pipa Organa Terbuka<br />
Cp<br />
γ =<br />
Cv<br />
3. Pipa Organa Tertutup<br />
( n + 1)<br />
P<br />
( n + 2)s<br />
( n + 2)<br />
P<br />
( n + 1)s<br />
( n + 1)<br />
P<br />
( n + 1)s<br />
f n<br />
f n<br />
f n<br />
n + 1<br />
= v<br />
2L<br />
n + 1<br />
= v<br />
2L<br />
2 n + 1<br />
=<br />
v<br />
4L<br />
27
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