Problem 1CQ: Light can pass easily through water and through air, but light will reflect from the surface of a... Problem 2CQ Problem 3CQ Problem 4CQ: A guitarist finds that the pitch of one of her strings is slightly flatthe frequency is a bit too... Problem 5CQ: Certain illnesses inflame your vocal cords, causing them to swell. How does this affect the pitch of... Problem 6CQ Problem 7CQ: Figure Q16.7 shows a standing sound wave in a tube of air that is open at both ends. Figure Q16.7 a.... Problem 8CQ: A typical flute is about 66 cm long. A piccolo is a very similar instrument, though it is smaller,... Problem 9CQ: Some pipes on a pipe organ are open at both ends, others are closed at one end. For pipes that play... Problem 12CQ: If you pour liquid in a tall, narrow glass, you may hear sound with a steadily rising pitch. What is... Problem 13CQ: When you speak after breathing helium, in which the speed of sound is much greater than in air, your... Problem 14CQ Problem 15CQ: A synthesizer is a keyboard instrument that can be made to sound like a flute, a trumpet, a pianoor... Problem 17CQ: A small boy and a grown woman both speak at approximately the same pitch. Nonetheless, its easy to... Problem 18MCQ Problem 19MCQ: At x = 3 cm, what is the earliest time that y will equal 2 mm? A. 0.5 s B. 0.7 s C. 1.0 s D. 1.5 s... Problem 20MCQ Problem 21MCQ Problem 22MCQ: A student in her physics lab measures the standing-wave modes of a tube. The lowest frequency that... Problem 23MCQ Problem 24MCQ: Resonances of the ear canal lead to increased sensitivity of hearing, as weve seen. Dogs have a much... Problem 25MCQ: The frequency of the lowest standing-wave mode on a 1.0-m-long string is 20 Hz. What is the wave... Problem 26MCQ: Suppose you pluck a string on a guitar and it produces the note A at a frequency of 440 Hz. Now you... Problem 1P: Figure P16.11 is a snapshot graph at t = 0 s of two waves on a taut string approaching each other at... Problem 2P Problem 3P Problem 4P Problem 5P Problem 6P Problem 7P: At t = 0 s, a small upward (positive y) pulse centered at x = 6.0 m is moving to the right on a... Problem 8P: You are holding one end of an elastic cord that is fastened to a wall 3.0 m away. You begin shaking... Problem 9P: A 2.0-m-long string is fixed at both ends and tightened until the wave speed is 40 m/s. What is the... Problem 10P: Figure P16.10 shows a standing wave oscillating at 100 Hz on a string. What is the wave speed?... Problem 11P: A bass guitar string is 89 cm long with a fundamental frequency of 30Hz. What is the wave speed on... Problem 12P Problem 13P: a. What are the three longest wavelengths for standing waves on a 240-cm-long string that is fixed... Problem 14P Problem 15P Problem 16P Problem 17P: The lowest note on a grand piano has a frequency of 27.5 Hz. The entire string is 2.00 m long and... Problem 18P: An experimenter finds that standing waves on a string fixed at both ends occur at 24 Hz and 32 Hz,... Problem 19P: Ocean waves of wavelength 26 m are moving directly toward a concrete barrier wall at 4.4 m/s. The... Problem 20P Problem 21P Problem 22P Problem 23P Problem 24P: An organ pipe is made to play a low note at 27.5 Hz, the same as the lowest note on a piano.... Problem 25P: The speed of sound in room temperature (20C) air is 343 m/s; in room temperature helium, it is 1010... Problem 26P: Parasaurolophus was a dinosaur whose distinguishing feature was a hollow crest on the head. The... Problem 27P: A drainage pipe running under a freeway is 30.0 m long. Both ends of the pipe are open, and wind... Problem 28P Problem 29P: Although the vocal tract is quite complicated, we can make a simple model of it as an open-closed... Problem 30P: You know that you sound better when you sing in the shower. This has to do with the amplification of... Problem 31P: A child has an ear canal that is 1.3 cm long. At what sound frequencies in the audible range will... Problem 32P: When a sound wave travels directly toward a hard wall, the incoming and reflected waves can combine... Problem 33P: The first formant of your vocal system can be modeled as the resonance of an open-closed tube, the... Problem 34P: When you voice the vowel sound in hat, you narrow the opening where your throat opens into the... Problem 35P: The first and second formants when you make an ee vowel sound are approximately 270 Hz and 2300 Hz.... Problem 37P: Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the... Problem 38P: Two loudspeakers in a 20C room emit 686 Hz sound waves along the x-axis. What is the smallest... Problem 40P: In noisy factory environments, its possible to use a loudspeaker to cancel persistent low-frequency... Problem 41P: Two identical loudspeakers separated by distance d emit 170Hz sound waves along the x-axis. As you... Problem 42P Problem 43P: Two identical loudspeakers 2.0 m apart are emitting 1800Hz sound waves into a room where the speed... Problem 44P Problem 45P: Musicians can use beats to tune their instruments. One flute is properly tuned and plays the musical... Problem 46P: A student waiting at a stoplight notices that her turn signal, which has a period of 0.85 s, makes... Problem 47P: Two strings are adjusted to vibrate at exactly 200 Hz. Then the tension in one string is increased... Problem 49P: A flute player hears four beats per second when she compares her note to a 523Hz tuning fork (the... Problem 50GP Problem 51GP: In addition to producing images, ultrasound can be used to heat tissues of the body for therapeutic... Problem 52GP: An 80-cm-long steel string with a linear density of 1.0 g/m is under 200 N tension. It is plucked... Problem 53GP: Tendons are, essentially, elastic cords stretched between two fixed ends; as such, they can support... Problem 55GP: Spiders may tune strands of their webs to give enhanced response at frequencies corresponding to the... Problem 56GP Problem 57GP Problem 58GP Problem 60GP Problem 61GP: A 40-cm-long tube has a 40-cm-long insert that can be pulled in and out, as shown in Figure P16.59.... Problem 62GP: The width of a particular microwave oven is exactly right to support a standing-wave mode.... Problem 63GP: Two loudspeakers located along the x-axis as shown in Figure P16.61 produce sounds of equal... Problem 64GP: Two loudspeakers 42.0 m apart and facing each other emit identical 115 Hz sinusoidal sound waves in... Problem 65GP Problem 66GP: Two loudspeakers, 4.0 m apart and facing each other, play identical sounds of the same frequency.... Problem 67GP: Piano tuners tune pianos by listening to the beats between the harmonics of two different strings.... Problem 68GP: A flutist assembles her flute in a room where the speed of sound is 342 m/s. When she plays the note... Problem 69GP Problem 70GP: A Doppler blood flowmeter emits ultrasound at a frequency of 5.0 MHz. What is the beat frequency... Problem 71GP: An ultrasound unit is being used to measure a patients heartbeat by combining the emitted 2.0 MHz... Problem 72MSPP Problem 73MSPP Problem 74MSPP Problem 75MSPP format_list_bulleted