Practice Longitudinal Waves And Acoustics (5) - Non-Dispersive Transverse and Longitudinal Waves in 1D & Introduction to Dispersion

Practice: Longitudinal Waves and Acoustics

Lesson 5Non-Dispersive Transverse and Longitudinal Waves in 1D & Introduction to Dispersion

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9 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define longitudinal waves.
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Think about the direction of particles in the wave.
Question 2.
What defines acoustic waves?
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Consider how sound travels through air.
3Question 3.
What is the main characteristic of longitudinal waves?
- They are perpendicular to wave motion
- They are parallel to wave motion
- They are circular
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Consider the direction particles move in relation to the wave.
4Question 4.
True or False: Standing waves can exist in both open and closed pipes.
- True
- False
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Think about the conditions in which standing waves can occur.
Question 5.
A long pipe of length 2 m is open at both ends. If the speed of sound in air is 340 m/s, what are the first three harmonics?
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Use the length and speed to calculate harmonics.
Question 6.
A closed pipe has a length of 1 m. What is the fundamental frequency if the speed of sound is 340 m/s?
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Consider the formula for an open-closed pipe's harmonics.

5 more questions in this section. Enroll free to practise them all.