Podcast
Questions and Answers
When a pulse travels from a faster medium into a slower medium, what can be said about the speed of the transmitted pulse compared to the incident pulse?
When a pulse travels from a faster medium into a slower medium, what can be said about the speed of the transmitted pulse compared to the incident pulse?
- it has a higher speed
- it has a lower speed (correct)
- it has the same speed
- it has an unpredictable speed
What happens to the wavelength of a pulse when it travels from a less dense medium into a more dense medium?
What happens to the wavelength of a pulse when it travels from a less dense medium into a more dense medium?
- the wavelength becomes infinite
- the wavelength increases
- the wavelength remains the same
- the wavelength decreases (correct)
What forms when a crest travels from a faster medium into a slower medium?
What forms when a crest travels from a faster medium into a slower medium?
- a trough and another trough
- a crest and a trough (correct)
- a trough and a crest
- a crest and another crest
When two pulses of equal amplitude pass through each other, what is the result?
When two pulses of equal amplitude pass through each other, what is the result?
At which harmonic is a standing wave formed on a 2.5 m string with 6 nodes?
At which harmonic is a standing wave formed on a 2.5 m string with 6 nodes?
When a wave travels into a different medium, what occurs to the speed?
When a wave travels into a different medium, what occurs to the speed?
What is the resultant height when a 14 cm trough meets an 18 cm pulse?
What is the resultant height when a 14 cm trough meets an 18 cm pulse?
What type of wave is generated by the vibration of a guitar string?
What type of wave is generated by the vibration of a guitar string?
Which factor primarily determines the speed of a mechanical wave?
Which factor primarily determines the speed of a mechanical wave?
When a wave transitions from shallow water to deep water, what happens to its wavelength?
When a wave transitions from shallow water to deep water, what happens to its wavelength?
What type of pulse results when a crest hits a fixed end?
What type of pulse results when a crest hits a fixed end?
What happens to the amplitude of a transmitted pulse when it travels from a more dense medium to a less dense medium?
What happens to the amplitude of a transmitted pulse when it travels from a more dense medium to a less dense medium?
When a crest travels from a slower medium into a faster medium, what is the nature of the transmitted and reflected pulse?
When a crest travels from a slower medium into a faster medium, what is the nature of the transmitted and reflected pulse?
Flashcards
Pulse speed in different mediums
Pulse speed in different mediums
When a pulse travels from a faster medium to a slower medium, its speed decreases.
Wavelength in different mediums
Wavelength in different mediums
When a pulse moves from a less dense medium to a more dense medium, its wavelength decreases.
Transmitted and Reflected pulse in different mediums
Transmitted and Reflected pulse in different mediums
A crest changes to a trough when moving from a faster medium to a slower medium and a trough will stay as a trough. The reflected pulse changes accordingly.
Interference of equal pulses
Interference of equal pulses
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Standing wave on a string (nodes)
Standing wave on a string (nodes)
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Harmonic of a standing wave
Harmonic of a standing wave
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Wavelength of a standing wave
Wavelength of a standing wave
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Ovetone of a standing wave
Ovetone of a standing wave
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Wave behavior in different mediums
Wave behavior in different mediums
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Superposition of waves
Superposition of waves
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Transverse wave
Transverse wave
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Wave speed
Wave speed
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Wave behavior in varying water depth
Wave behavior in varying water depth
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Reflection at fixed end
Reflection at fixed end
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Reflection at free end
Reflection at free end
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Transmission through denser to less dense medium
Transmission through denser to less dense medium
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Transmission through slower to faster medium
Transmission through slower to faster medium
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Transmission through less dense to more dense medium
Transmission through less dense to more dense medium
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Transmission through slower to faster medium (reflected)
Transmission through slower to faster medium (reflected)
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Pulse
Pulse
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Study Notes
Wave Interactions and Properties
- Wave behavior in different media:
- Frequency can change when a wave enters a different medium.
- Wavelength can change when a wave enters a different medium.
- Wave speed is determined by the medium.
- Amplitude can change when waves superimpose.
Wave Superposition
- Pulse superposition:
- Resultant pulse amplitude can range from the sum to the difference of the individual pulses' amplitudes.
Wave Types
- Mechanical waves:
- Guitar strings produce transverse waves.
- Longitudinal and transverse waves are produced by different scenarios.
Wave Speed
- Factors determining wave speed:
- Wave speed depends on the medium.
Wave Reflection and Transmission
-
Reflection at fixed and free ends:
- Crest reflected at a fixed end becomes a trough.
- Trough reflected at a free end becomes a trough.
-
Transmission through different media:
- Denser to less dense medium: Transmitted pulse has higher amplitude, wavelength and speed compared to the incident pulse
- Faster to slower medium: Transmitted pulse will have lower speed than the incident pulse, The reflected pulse will be the opposite phase than the transmitted pulse.
Wave Interference
- Superposition of waves:
- When two waves overlap, they interfere.
- If waves are in-phase, they constructively interfere (increased amplitude).
Standing Waves
- Standing wave properties:
- Standing waves have fixed points called nodes and antinodes.
- The number of nodes minus one determines the harmonic number.
- Wavelength relates to the length of the medium.
- Overtone refers to the harmonic number minus 1.
Calculations
- Wave formulas:
f = 1/T(frequency = 1/period)v = λf(speed = wavelength × frequency)L = nλ/2(length = harmonic number × wavelength/2 for string length)fn = nv(frequency of harmonic on string)
- For standing waves on a string,
v = √(T/μ)also applies, where T = tension and μ = linear density.
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Description
Test your knowledge on wave behavior, types, and properties. This quiz covers topics such as wave speed, superposition, reflection, and transmission across different media. Perfect for students studying physics concepts related to waves.
