Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
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Chapter 18, Problem 80PQ
To determine
The frequency of the tuning fork.
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A piano tuner uses a 512-Hz tuning fork to tune a piano. He strikes the fork and hits a key on the piano and hears a beat frequency of 5 Hz. He tightens the string of the piano, and repeats the procedure. Once again he hears a beat frequency of 5 Hz. What happened?
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Chapter 18 Solutions
Physics for Scientists and Engineers: Foundations and Connections
Ch. 18.1 - As shown in Figure 18.3, two pulses trawling along...Ch. 18.1 - Prob. 18.2CECh. 18.2 - A wave pulse travels to the left on a rope as...Ch. 18.3 - Noise cancellation headphones use a microphone to...Ch. 18.8 - Tuning the Guitar Before a performance, a piano is...Ch. 18 - Prob. 1PQCh. 18 - Two pulses travel in opposite directions along a...Ch. 18 - Prob. 3PQCh. 18 - Prob. 4PQCh. 18 - Prob. 5PQ
Ch. 18 - The wave function for a pulse on a rope is given...Ch. 18 - Prob. 7PQCh. 18 - Prob. 8PQCh. 18 - Prob. 9PQCh. 18 - Prob. 10PQCh. 18 - Prob. 11PQCh. 18 - Two speakers, facing each other and separated by a...Ch. 18 - Prob. 13PQCh. 18 - Prob. 14PQCh. 18 - Prob. 15PQCh. 18 - As in Figure P18.16, a simple harmonic oscillator...Ch. 18 - A standing wave on a string is described by the...Ch. 18 - The resultant wave from the interference of two...Ch. 18 - A standing transverse wave on a string of length...Ch. 18 - Prob. 20PQCh. 18 - Prob. 21PQCh. 18 - Prob. 22PQCh. 18 - Prob. 23PQCh. 18 - A violin string vibrates at 294 Hz when its full...Ch. 18 - Two successive harmonics on a string fixed at both...Ch. 18 - Prob. 26PQCh. 18 - When a string fixed at both ends resonates in its...Ch. 18 - Prob. 28PQCh. 18 - Prob. 29PQCh. 18 - A string fixed at both ends resonates in its...Ch. 18 - Prob. 31PQCh. 18 - Prob. 32PQCh. 18 - Prob. 33PQCh. 18 - If you touch the string in Problem 33 at an...Ch. 18 - A 0.530-g nylon guitar string 58.5 cm in length...Ch. 18 - Prob. 36PQCh. 18 - Prob. 37PQCh. 18 - A barrel organ is shown in Figure P18.38. Such...Ch. 18 - Prob. 39PQCh. 18 - Prob. 40PQCh. 18 - The Channel Tunnel, or Chunnel, stretches 37.9 km...Ch. 18 - Prob. 42PQCh. 18 - Prob. 43PQCh. 18 - Prob. 44PQCh. 18 - If the aluminum rod in Example 18.6 were free at...Ch. 18 - Prob. 46PQCh. 18 - Prob. 47PQCh. 18 - Prob. 48PQCh. 18 - Prob. 49PQCh. 18 - Prob. 50PQCh. 18 - Prob. 51PQCh. 18 - Prob. 52PQCh. 18 - Prob. 53PQCh. 18 - Dog whistles operate at frequencies above the...Ch. 18 - Prob. 55PQCh. 18 - Prob. 56PQCh. 18 - Prob. 57PQCh. 18 - Prob. 58PQCh. 18 - Prob. 59PQCh. 18 - Prob. 60PQCh. 18 - Prob. 61PQCh. 18 - Prob. 62PQCh. 18 - The functions y1=2(2x+5t)2+4andy2=2(2x5t3)2+4...Ch. 18 - Prob. 64PQCh. 18 - Prob. 65PQCh. 18 - Prob. 66PQCh. 18 - Prob. 67PQCh. 18 - Prob. 68PQCh. 18 - Two successive harmonic frequencies of vibration...Ch. 18 - Prob. 70PQCh. 18 - Prob. 71PQCh. 18 - Prob. 72PQCh. 18 - A pipe is observed to have a fundamental frequency...Ch. 18 - The wave function for a standing wave on a...Ch. 18 - Prob. 75PQCh. 18 - Prob. 76PQCh. 18 - Prob. 77PQCh. 18 - Prob. 78PQCh. 18 - Prob. 79PQCh. 18 - Prob. 80PQ
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- You are in an auto traveling at 85 m/s toward a pole-mounted warning siren. If the siren’s frequency is 499 Hz, what frequency do you hear? Use 343 m/s as the speed of sound. No need to include the unit. Write your answer in whole numbers.arrow_forwardTwo tuning forks having frequencies of 460 and 464 Hz are struck simultaneously. What average frequency will you hear, and what will the beat frequency be?arrow_forwardA loudspeaker has a frequency of 1000Hz to 2000Hz. An open open pipe is near the loudspeaker. The pipe is 45.7cm in length and the speed of sound is 344m/s. What are the frequencies in the range above that are in resonance?arrow_forward
- The pan flute is a musical instrument consisting of a number of closed-end tubes of different lengths. When the musician blows over the open ends, each tube plays a different note. The longest pipe is 0.33 m long. What is the frequency of the note it plays?arrow_forwardOne OPEN organ pipe has a length of 2.40 m. What is the frequency of a note played by this pipe? What is the frequency of the second and third harmonic?arrow_forwardThe bat uses its ultrasonic radar instead of sight when flying in the dark. If the bat's own flight speed is 5.9 m / s and another animal flies towards the bat at a speed of 2.0 m / s, what frequency does the bat detect when reflected from the target when the frequency of the sound emitted by the bat is 45.9 kHz? Use a speed of 340 m / s. Give the answer in kilohertz to one decimal place.arrow_forward
- A whistle you use to call your hunting dog has a frequency of 42 kHz, but your dog is ignoring it. You suspect the whistle may not be working, but you can't hear sounds above 40 kHz. To test it, you ask a friend to blow the whistle, then you hop on your bicycle. At what minimum speed should you ride to know if the whistle is working?arrow_forwardA tuning fork produces a beat frequency of 5 Hz with a 415 Hz sound wave. When placed near a sound wave oscillating at 426 Hz, a beat frequency of 6 Hz is generated. What is the frequency of the tuning fork?arrow_forwardAs we said, sound waves can be modeled with sine waves. The standard musical pitch is the A440 which means that the musical note A4 has a frequency of 440 Hz. So this note oscillates once every seconds and it could be modeled using the curve y = sin(440- 2nt) = sin(880nt). For each of the following musical notes, what would w be if we wanted to model the sound wave with y = sin(wt)? !! %3D (a) (i) C4, (261.63 Hz (iii) E4, (329.63 Hz) (v) G4, (392 Hz) (ii) D4, (293.66 Hz) (iv) F4, (349.23 Hz) (vi) B4, (493.88 Hz)arrow_forward
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