PRACTICE IT Use the worked example above to help you solve this problem. A certain piano string is supposed to vibrate at a frequency of 4.36 x 10² Hz. In order to check its frequency, a tuning fork known to vibrate at a frequency of 4.36 x 10² Hz is sounded at the same time the piano key is struck, and a beat frequency of 8 beats per second is heard. (a) Find the two possible frequencies at which the string could be vibrating. flower = fhigher = Hz Hz (b) Suppose the piano tuner runs toward the piano, holding the vibrating tuning fork while his assistant plays the note, which is at 428 Hz. At his maximum speed, the piano tuner notices the beat frequency drops from 8 Hz to 4 Hz (without going through a beat frequency of zero). How fast is he moving? Use a speed of sound of 343 m/s. m/s (c) While the piano tuner is running, what beat frequency is observed by the assistant? [Note:

PRACTICE IT Use the worked example above to help you solve this problem. A certain piano string is supposed to vibrate at a frequency of 4.36 x 10² Hz. In order to check its frequency, a tuning fork known to vibrate at a frequency of 4.36 x 10² Hz is sounded at the same time the piano key is struck, and a beat frequency of 8 beats per second is heard. (a) Find the two possible frequencies at which the string could be vibrating. flower = fhigher = Hz Hz (b) Suppose the piano tuner runs toward the piano, holding the vibrating tuning fork while his assistant plays the note, which is at 428 Hz. At his maximum speed, the piano tuner notices the beat frequency drops from 8 Hz to 4 Hz (without going through a beat frequency of zero). How fast is he moving? Use a speed of sound of 343 m/s. m/s (c) While the piano tuner is running, what beat frequency is observed by the assistant? [Note:

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Use the CB (Critical Band) concept and the chart below to predict whether the following pairs of tones, when heard simultaneously at the same amplitude, will evoke a consonant or a dissonant sensation. Explain how you know. (Consider the first member of each pair to be the centre frequency for this exercise.)
SOLUTION (A) Find the first three harmonics at the given tension. Calculate the speed of the wave on the wire: Find the wire's fundamental frequency: Find the next two harmonics by multiplication: = V = f₁ Substitute the values of F, μ, and L. F 1/2 80 N (=) ¹/² = (2.00 x 10-³ kg/m = (B) Find the wavelength of the sound waves produced. Solve vs fλ for the wavelength and substitute the frequencies. F == A V f₁ 2L (C) Find the fundamental frequency corresponding to the elastic limit. Calculate the tension in the wire from the elastic limit: f₁ f₂ = 2f₁ = 2.00 × 10² Hz, ƒ3 = 3ƒ₁ = 3.00 × 10² Hz A₁ = v₁/f₁ = (345 m/s)/(1.00 x 10² Hz) = 3.45 m 1₂ = vs/f₂ = (345 m/s)/(2.00 x 10² Hz) = 1.73 m ^₂ = vs/f3 = (345 m/s)/(3.00 x 10² Hz) = 1.15 m = 2.00 × 10² m/s 2(1.00 m) elastic limit →→ F = (elastic limit) A F = (2.80 x 108 Pa) (2.56 × 10-7m²) = 71.7 N 1 V 2L F 1/2 -= 1.00 x 10² Hz μ = 2.00 x 10² m/s 1 2(1.00 m) 71.7 N 2.00 x 10-³ kg/m = 94.7 Hz
Two cars have the same single-frequency horn. When one is at rest and the other is moving toward it at 15 m/s, the dirver at rest hears a beat frequency of 4.5 Hz. What is the frequency of the horns? Please sketch the situation, define all variables. Thank you
i need the answer quickly
Answer to part A: 101 Hz I need help with parts: B, C, D
Please answer this with in 30 mins to get a thumbs up! please show neat and clean work !
PLEASE ANSWER PART D FOR ME THANKS IN ADVANCE
Solve part-a, part-b & part-c submitted separately.
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