18. Waves & Sound

The fundamental frequency of your closed organ pipe is 200 Hz. The second overtone of this pipe has the same frequency as the 3^rd harmonic of an open pipe. What is the length of this open pipe?

Standing sound waves are produced in a pipe that is 1.20 m long. For the fundamental and first two overtones, determine the locations along the pipe (measured from the left end) of the displacement nodes and the pressure nodes if the pipe is closed at the left end and open at the right end.

Standing sound waves are produced in a pipe that is 1.20 m long. For the fundamental and first two overtones, determine the locations along the pipe (measured from the left end) of the displacement nodes and the pressure nodes if (a) the pipe is open at both ends

The fundamental frequency of a pipe that is open at both ends is 524 Hz. If one end is now closed, find the wavelength

The fundamental frequency of a pipe that is open at both ends is 524 Hz. How long is this pipe? If one end is now closed

(II) A meteorite traveling 9400 m/s strikes the ocean. Determine the shock wave angle it produces in the water just after entering. Assume T = 20 °C.

(II) A tight guitar string has a frequency of 540 Hz as its third harmonic. What will be its fundamental frequency if it is fingered at a length of only 70% of its original length?

A pipe in air at 21.5°C is to be designed to produce two successive harmonics at 308 Hz and 352 Hz. How long must the pipe be, and is it open or closed?

A uniform narrow tube 1.50 m long is open at both ends. It resonates at two successive harmonics of frequencies 275 Hz and 330 Hz. What is the fundamental frequency?

(II) An unfingered guitar string is 0.68 m long and is tuned to play E above middle C (330 Hz). What is the wavelength on the string of this 440-Hz wave?

(II) An unfingered guitar string is 0.68 m long and is tuned to play E above middle C (330 Hz). What are the frequency and wavelength of the sound wave produced in air at 22°C by this fingered string?

An unfingered guitar string is 0.68 m long and is tuned to play E above middle C (330 Hz). How far from the end of this string must a fret (and your finger, Fig. 16–8) be placed to play A above middle C (440 Hz)?

A uniform narrow tube 1.50 m long is open at both ends. It resonates at two successive harmonics of frequencies 275 Hz and 330 Hz. What is the speed of sound in the gas in the tube?

A space probe enters the thin atmosphere of a planet where the speed of sound is only about 55 m/s. What is the angle of the shock wave relative to the direction of motion?

A particular whistle produces sound by setting up the fundamental standing wave in an air column 8.40 cm long. The tube is closed at one end. The whistle blower is riding in a car moving away from you at 25 m/s. What frequency do you hear?