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Slide 16-1 QuickCheck 16.1 Two wave pulses on a string approach each other at speeds of 1 m/s. How does the string look at t = 3 s? © 2015 Pearson Education, Inc.
Slide 16-2 Two wave pulses on a string approach each other at speeds of 1 m/s. How does the string look at t = 3 s? QuickCheck 16.2 © 2015 Pearson Education, Inc.
Slide 16-3 QuickCheck 16.3 Two waves on a string are moving toward each other. A picture at t = 0 s appears as follows: How does the string appear at t = 2 s? © 2015 Pearson Education, Inc.
Slide 16-4 QuickCheck 16.4 What is the wavelength of this standing wave? A.0.25 m B.0.5 m C.1.0 m D.2.0 m E.Standing waves don’t have a wavelength. © 2015 Pearson Education, Inc.
Slide 16-5 QuickCheck 16.5 What is the mode number of this standing wave? A.4 B.5 C.6 D.Can’t say without knowing what kind of wave it is © 2015 Pearson Education, Inc.
Slide 16-6 QuickCheck 16.6 A standing wave on a string vibrates as shown. Suppose the string tension is reduced to 1/4 its original value while the frequency and length are kept unchanged. Which standing wave pattern is produced? © 2015 Pearson Education, Inc.
Slide 16-7 QuickCheck 16.7 Which of the following changes will increase the frequency of the lowest-frequency standing sound wave on a stretched string? Choose all that apply. A.Replacing the string with a thicker string B.Increasing the tension in the string C.Plucking the string harder D.Doubling the length of the string © 2015 Pearson Education, Inc.
Slide 16-8 QuickCheck 16.8 An open-open tube of air has length L. Which graph shows the m = 3 standing wave in this tube? © 2015 Pearson Education, Inc.
Slide 16-9 An open-closed tube of air of length L has the closed end on the right. Which graph shows the m = 3 standing wave in this tube? QuickCheck 16.9 © 2015 Pearson Education, Inc.
Slide QuickCheck The following tubes all support sound waves at their fundamental frequency. Which tube has the lowest fundamental frequency? © 2015 Pearson Education, Inc.
Slide QuickCheck Two in-phase sources emit sound waves of equal wavelength and intensity. At the position of the dot, A.The interference is constructive. B.The interference is destructive. C.The interference is somewhere between constructive and destructive. D.There’s not enough information to tell about the interference. © 2015 Pearson Education, Inc.
Slide QuickCheck Two speakers emit sounds of nearly equal frequency, as shown. At a point between the two speakers, the sound varies from loud to soft. How much time elapses between two successive loud moments? A.0.5 s B.1.0 s C.2.0 s D.4.0 s © 2015 Pearson Education, Inc.
Slide QuickCheck You hear 2 beats per second when two sound sources, both at rest, play simultaneously. The beats disappear if source 2 moves toward you while source 1 remains at rest. The frequency of source 1 is 500 Hz. The frequency of source 2 is A.496 Hz B.498 Hz C.500 Hz D.502 Hz E.504 Hz © 2015 Pearson Education, Inc.
Chapter 21. Two pulses on a string approach each other at speeds of 1 m/s. What is the shape of the string at t = 6 s? (1) (2) (3) (4)
ConcepTest 12.1a ConcepTest 12.1a Sound Bite I 1) the frequency f 2) the wavelength 3) the speed of the wave 4) both f and 5) both v wave and When a sound.
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Chapter 18 Superposition and Standing Waves. Quick Quiz 18.1 Two pulses are traveling toward each other at 10 cm/s on a long string, as shown in the figure.
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Which of the following waves requires a material medium through which to travel? (a) Sound (b) Television (c) Radio (d) X ray Q1.
A 1.2 meter string is stretched between two points. The velocity of a wave o the string is 200m/s. Draw and find the frequency and wavelength of the first.
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Music. Doppler The Doppler Effect –The pitch of a sound will be higher or lower if the source is moving toward or away from you –Sirens –Race Cars –Doppler.
A 80cm string is stretched between two points. The velocity of a wave o the string is 200m/s. Draw and find the frequency and wavelength of the first and.
WAVES AT MEDIA BOUNDARIES Section 9.2. Key Terms Media Boundary Free-end Reflection Fixed-end Reflection Transmission Standing Wave Node
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Diffraction AP Physics B. Superposition..AKA….Interference One of the characteristics of a WAVE is the ability to undergo INTERFERENCE. There are TWO.
1) A piano emits frequencies that range from a low of about 26 Hz to a high of about 4250 Hz. Find the range of wavelengths spanned by this instrument.
Answer the following… 17. What happens to the amplitude of a pulse as it travels down the slinky and back? 18. What happens to the speed of a pulse as.
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Page 56 We have done limits at infinity (i.e., lim x f(x) and lim x – f(x) where f(x) is a rational function), what happen if f(x) is not a rational function?
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