The wave shown is moving to the right with a wave speed of 54.3 m/s. What is the frequency of the wave, in H? Your answer needs to have 2 significont figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is atreody pven in the quesion statement. MA 03 12 15 Selected Answer: 91

The wave shown is moving to the right with a wave speed of 54.3 m/s. What is the frequency of the wave, in H? Your answer needs to have 2 significont figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is atreody pven in the quesion statement. MA 03 12 15 Selected Answer: 91

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter16: Waves

Section: Chapter Questions

Problem 83P: A microphone receiving a pure sound tone feeds an oscilloscope, producing a wave on its screen. If...

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Many of the topics discussed in this chapter are useful beyond the topics of mechanical waves. It is hard to conceive of a mechanical wave with sharp corners, but you could encounter such a wave form in your digital electronics class, as shown below. This could be a signal from a device known as an analog to digital converter, in which a continuous voltage signal is converted into a discrete signal or a digital recording of sound. What is the result of the superposition of the two signals?
Consider the graph shown below of a compression wave. Shown are snapshots of the wave function for t=0.000 s (blue) and t=0.005 s (orange). What are the wavelength, maximum displacement, velocity, and period of the compression wave?
The wave function that models a standing wave is given as yr(x,t)=6.00cmsin(3.00m1x+1.20rad)cos(6.00s1t+1.20rad) . What are two wave functions that interfere to form this wave function? Plot the two wave functions and the sum of the sum of the two wave functions at t=1.00 s to verify your answer.
What is the difference between propagation speed and the frequency of a mechanical wave? Does one or both affect wavelength? If so, how?
What is the minimum speed at which a source must travel toward you for you to be able to hear that its frequency is Doppler shifted? Thai is, what speed produces a shift of 0.300% on a day when the speed of sound is 331 m/s?
A 0.80-m-long tube is opened at both ends. The air temperature is 26°C. The air in the tube is oscillated using a speaker attached to a signal generator. What are the wavelengths and frequencies of first two modes of sound waves that resonate in the tube?
Check Your Understanding The wave equation 2y(x,t)x2=1v22y(x,t)t2 works for any wave of the form y(x,t)=f(xvt) . In the previous section, we stated that a cosine function could also be used to model a simple harmonic mechanical wave. Check if the wave y(x,t)=0.50mcos(0.20m1x4.00s1t+10) is a solution to the wave equation. Any disturbance that complies with the wave equation can propagate as a wave moving along the x-axis with a wave speed v. It works equally well for waves on a string, sound waves, and electromagnetic waves. This equation is extremely useful. For example, it can be used to show that electromagnetic waves move at the speed of light.
Two 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?
What intensity level does the sound in the preceding problem correspond to?
The intensity of a spherical waves decreases as the wave moves away from the source. If the intensity of the wave at the source is I0, how far from the source will the intensity decrease by a factor of nine?
A physicist at a fireworks display times the lag between seeing an explosion and hearing its sound, and finds it to be 0.400 s. (a) How far away is the explosion if air temperature is 24.0°C and if you neglect the time taken for light to reach the physicist? (b) Calculate the distance to the explosion taking the speed of light into account. Note that this distance is negligibly greater.
A guitar string oscillates at a frequency of 100 Hz and produces a sound wave. (a) What do you think the frequency of the sound wave is that the vibrating string produces? (b) If the speed of the sound wave is v=343 m/s, , what is the wavelength of the sound wave?