12. An organ pipe is open at one end and closed at the other. The lowest note you can play on this pipe has frequency fmin. If the speed of sound in the pipe is v, what is the length L of the pipe? A V L = 2fmin B L = V 4fmin L C = V fmin L D - 2v fmin L E = 4v fmin

A metal has a Young's modulus of 6.801 x 1010 N/m2. What is the speed of sound in a metal rod in the shape of a cylinder. Density of the metal is 2149.95 kg/m°. a) 1.4 x 103 m/s b) 8.8 x 103 m/s c) 5.6x 103 m/s. d) 5.1 x 103 m/s 2.5 x × 103 m/s

A string experiences several harmonic frequencies. Two successive frequencies are 325Hz and 390Hz. a) What is the fundamental frequency? b) What is the next harmonic higher than 195Hz? c) Which harmonic is this?

You have an open-open pipe of adjustable length near a taut 60.0 cm, 5.0 gram guitar string which is under a tension of 300 N. You want to adjust the length of the tube so that when it produces a sound in its fundamental frequency, this sound is at the same frequency of the string’s vibration in its second harmonic. What should be the length of the pipe?

The frequency of a musical note is 320 Hz. If an organ pipe is open at one end and closed at the other, what length must it have for its fundamental mode to produce this note? ☐ m

9. A steel piano wire is 70.0 cm long and has a mass of 2.90 g. If the tension of the wire is 590 N, what is the fourth harmonic frequency? Hz 136 36 skp1307 skp136 skp136 sk skp136

! 1 7. A violin string is tuned to 480 Hz (fundamental frequency). When playing the instrument, the violinist puts a finger down on the string one-fourth of the string length from the neck end. What is the frequency of the string when played like this? Q ← A 1 option 2 c N W S . # 3 3 X command Hz C E D ZEEL!! $ 4 C R F % 5 G Search or type URL V T G MacBook Pro 1332 11134 A 6 Y B & 7 H U N * 00 8 J - M → ( 9 K O < I H a ) O L 1332 jj13 command P .. - - : ; U { option [ + = ? 1 "1 F

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8 A 1.0 m1.0 m long pipe held vertically is inserted into a tank of water. This creates an open-closed pipe whose length can be easily varied. When a tuning fork is held at the open end and the pipe is slowly pulled out of the water, resonances are observed when the top of the pipe is 16 cm and 48 cm above the top surface of the water, and no resonances are observed in between. What is the frequency of the tuning fork? Use 340 m/s for the speed of sound. 240 Hz 530 Hz 610 Hz 710 Hz 850 Hz Correct.

The fundamental note produced by a closed pipe in a piano is 128 Hz. What is the wave length of its first overtone ? A 0.72 m B 0.52 m C 52 nm D 7.2 m 11.