Part (a) Superposition occurs during which of the following? Select all that apply. MultipleSelect: 1) When a single transverse wave is created with no reflections. 2) When waves pass through one another. 3) When a single transverse wave is created with reflections. 4) Only when smaller waves combine to create larger waves. Part (b) True or False: Destructive interference is the result of superposition of waves in phase. TrueOrFalse : 1) 2)

Part (a) Superposition occurs during which of the following? Select all that apply. MultipleSelect: 1) When a single transverse wave is created with no reflections. 2) When waves pass through one another. 3) When a single transverse wave is created with reflections. 4) Only when smaller waves combine to create larger waves. Part (b) True or False: Destructive interference is the result of superposition of waves in phase. TrueOrFalse : 1) 2)

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter17: Traveling Waves

Section: Chapter Questions

Problem 31PQ

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In figure OQ18.1 (page 566), a sound wave of wave-lenght 0.8 m divides into two equal parts that recombine to interfere constructively, with the original difference between their path lengths being |r2 r1| = 0.8 m. Rank the following situations according to the intensity of sound at the receiver from the highest to the lowest. Assume the tube walls absorb no sound energy. Give equal ranks to situations in which the intensity is equal. (a) From its original position, the sliding section is moved out by 0.1 m. (b) Next it slides out an additional 0.1 m. (c) It slides out still another 0.1 m. (d) It slides out 0.1 m more.
How can you determine that the speed of sound is the same for all frequencies by listening to a band orchestra?
You are working for a plumber who is laying very long sections of copper pipe for a large building project. He spends a lot of time measuring the lengths of the sections with a measuring tape. You suggest a faster way to measure the length. You know that the speed of a one-dimensional compressional wave traveling along a copper pipe is 3.56 km/s. You suggest that a worker give a sharp hammer blow at one end of the pipe. Using an oscilloscope app on your smartphone, you will measure the time interval t between the arrival of the two sound waves due to the blow: one through the 20.0C air and the other through the pipe. (a) To measure the length, you must derive an equation that relates the length L of the pipe numerically to the time interval t. (b) You measure a time interval of t = 127 ms between the arrivals of the pulses and, from this value, determine the length of the pipe. (c) Your smartphone app claims an accuracy of 1.0% in measuring time intervals. So you calculate by how many centimeters your calculation of the length might be in error.
You are working at an open-air amphitheater, where rock concerts occur regularly. The venue has powerful loudspeakers mounted on 10.6-m-tall columns at various locations surrounding the audience. The loudspeakers emit sound uniformly in all directions. There are ladder steps sticking out from the columns, to help workers service the loudspeakers. Many times, audience members break through the protective fencing around the columns and climb upward on the columns to get a better view of the performers. The upcoming concert is by a group that states that several very-high-volume pulses of sound occur in their concerts, and these sounds are part of their artistic expression. The amphitheater owners are worried about people climbing the columns and being too close to the loudspeakers when these peak sounds are emitted. They do not want to be held responsible for injuries to audience members ears. Based on past performances of the group, you determine that the peak sound level is 150 dB measured 20.0 cm from the speakers on the columns. The owners ask you to determine the heights on the columns at which to mount impassable barricades to keep people from getting too close to the speakers and hearing sound above the threshold of pain.
As you travel down the highway in your car, an ambulance approaches you from the rear at a high speed (Fig. OQ17.3) sounding its siren at a frequency of 500 Hz. Which statement is correct? (a) You hear a frequency less than 500 Hz. (b) You hear a frequency equal to 500 Hz. (c) You hear a frequency greater than 500 Hz. (d) You hear a frequency greater than 500 Hz. whereas the ambulance driver hears a frequency lower than 500 Hz. (e) You hear a frequency less than 500 Hz. whereas (he ambulance driver hears a frequency of 500 Hz.
What are the necessary conditions for constructive interference and destructive interference? Select one: a. Both a and b b. None of them c. (B) It results when the waves arrive at point 180 degrees out of phase. d. (A) It results when the waves arrive together at a point in phase.
1.The wave-related quantity algebraically equivalent to 1/f is Group of answer choices T λ ω A 2.When a sound wave moves through a medium such as air, the motion of the molecules of the medium is in what direction (with respect to the motion of the sound wave)? Group of answer choices 3. Which of the following ranges corresponds to the longest wavelengths? Group of answer choices all have the same wavelengths infrasonic ultrasonic audible 4. Waves propagate at 4.0 m/s along a stretched string. The end of the string is vibrated up and down once every 3.0 s. What is the wavelength of the waves that travel along the string? 5. A 2.0-m long piano string of mass 40 g is under a tension of 338 N. Find the speed with which a wave travels on this string. Group of answer choices 1040 m/s 520 m/s 260 m/s 130 m/s 6. A 5-m-long organ pipe is open at one end and closed at the other. Its fundamental tone has wavelength 7. The speed of sound at 0°C is 331…
2. Two waves sources release their own individual wave. One source releases a wave, while the second source sends an identical wave, but 2.5λ shifted. Which statement below is true? a. The waves will be in phase, and constructively interfere b. The waves will be in phase, a nd destructively interfere c. The waves will be out of phase, and constructively interfere d. The waves will be out of phase, and destructively interfere e. None of the above are true
1) A sound wave of wavelength 20 cm is split into two equal parts that later recombine at the ear of the observer, as shown in the figure. a) Initially, the upper path is the same length as the lower path, such that r2 – r1 = 0. At this point, is the interference between the two sound waves constructive, destructive, or something in between? b) Now the sliding section is moved up by 5 cm (which extends path r2 by twice that). Is the interference between the two sound waves constructive, destructive, or something in between? c) Next the sliding section is moved up by an additional 2.5 cm. Is the interference between the two sound waves constructive, destructive, or something in between? d) How does the observed sound intensity compare between parts (a), (b), and (c)? Rank situations a, b, and c from loudest to quietest. e) From this point, how much farther would you have to move up the sliding section to reach the next minimum intensity situation?
as Question 1 The ambulance is moving towards the woman standing on the sidewalk. As the ambulance approaches the woman, how will she perceive the pitch of the siren and why? A She will perceive a higher pitch because the speed of the sound waves is faster. B The pitch she will perceive will be the same, only the volume of the sound is louder. C She will perceive a higher pitch because the frequency of the sound waves is higher. D The pitch she will perceive will be the same, only the intensity of the sound is greater.
1. The speed of sound wave depends on ______________. A. pitch B. loudness. C. temperature D. None of the above 2. A fire truck is moving at a fairly high speed, with its siren emitting sound at a specific pitch. As the fire truck recedes from you which of the following characteristics of the sound wave from the siren will have a smaller measured value for you than for a fireman in the truck? A. frequency and wavelength B. frequency and intensity C. wavelength and intensity D. wavelength and speed 6. Which of the following produce sound?A. soft objects B. radio stations C. vibrating objects D. objects under pressure