Podcast
Questions and Answers
What phenomenon allows sound to travel through air?
What phenomenon allows sound to travel through air?
- Electromagnetic waves
- Light reflections
- Vacuum of air
- Vibrations of air particles (correct)
What is the primary flaw in the experimental method of measuring the speed of sound using a starting pistol?
What is the primary flaw in the experimental method of measuring the speed of sound using a starting pistol?
- The sound signal is too faint
- Time is measured inaccurately due to human reaction time (correct)
- Air pressure can affect the sound speed
- The distance to the observer is too far
If an observer records a 1.2 s time difference when standing 400 m away, how can the speed of sound be calculated?
If an observer records a 1.2 s time difference when standing 400 m away, how can the speed of sound be calculated?
- Using the formula $v = x \times t$
- Using the formula $v = \frac{t}{x}$
- Using the formula $v = \frac{x}{t}$ (correct)
- Using the formula $v = x + t$
What is the accepted speed of sound in air?
What is the accepted speed of sound in air?
Why does light reach the observer before sound when a starting pistol is fired?
Why does light reach the observer before sound when a starting pistol is fired?
What would likely affect the recorded speed of sound in an experiment?
What would likely affect the recorded speed of sound in an experiment?
What measurement is not directly related to calculating the speed of sound?
What measurement is not directly related to calculating the speed of sound?
What is a possible reason for the recorded value of 333 m/s being slightly above the accepted speed of sound?
What is a possible reason for the recorded value of 333 m/s being slightly above the accepted speed of sound?
When sound is produced, what is the first effect that occurs?
When sound is produced, what is the first effect that occurs?
Flashcards
Sound Propagation
Sound Propagation
The movement of vibrations through a medium, like air, caused by the collision of particles.
Speed of Sound
Speed of Sound
The distance a sound wave travels in a given amount of time.
Meter (m)
Meter (m)
A unit of measurement for distance, often used in calculations involving sound.
Second (s)
Second (s)
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Speed of Sound Formula
Speed of Sound Formula
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Time Difference
Time Difference
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Reaction Time
Reaction Time
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Speed of Light
Speed of Light
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Standard Speed of Sound in Air
Standard Speed of Sound in Air
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Study Notes
Measuring Sound Speed in Air
- Sound travels through air by vibrating air particles, transferring the vibrations to the ear drum.
- Light travels much faster than sound.
- Sound speed is calculated by dividing the distance sound travels by the time it takes to travel that distance.
- The formula for calculating sound speed is: speed = distance / time.
- Units:
- Speed (v): meters per second (m/s)
- Distance (x): meters (m)
- Time (t): seconds (s)
- Example Calculation:
- Distance (x): 400 meters
- Time difference (t): 1.2 seconds
- Speed (v): 400 m / 1.2 s = 333.3 m/s.
- Accepted speed of sound in air: 330 m/s
- Limitations of the method:
- Observer reaction time variation can lead to inaccurate results.
- Differences in how observers use stopwatches can affect precision.
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