ONDE MÉCANIQUE 👉 Célérité et retard | 1ere | Physique
Paul Olivier・2 minutes read
A progressive mechanical wave's speed is celerity, with delay denoted by tau, representing the time taken for the wave to travel a distance in the medium. Calculating the delay of a sound wave in a rail involves the relationship between speed, distance, and delay, resulting in a 1.2-second delay in a specific exercise where a train emits a sound wave received 6.5 km away by an Indian.
Insights
- The speed of a wave, known as celerity, is crucial in determining the delay of a wave traveling through a medium, denoted by the Greek letter tau, which represents the time taken for the wave to cover a certain distance.
- Understanding the relationship between the speed of a wave, the distance traveled, and the resulting delay is essential in calculating the time it takes for a sound wave to reach its destination accurately, as exemplified by the exercise involving a train emitting a sound wave received by an individual 6.5 km away.
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Recent questions
What is celerity in wave propagation?
The celerity of a wave refers to its speed.
How is the delay of a wave denoted?
The delay of a wave is denoted by the Greek letter tau.
What factors are involved in calculating the delay of a sound wave in a rail?
The delay of a sound wave in a rail is calculated using the wave's speed, distance traveled, and the delay itself.
How can one determine the delay of a sound wave in a specific exercise involving a train and an Indian receiver?
The delay of a sound wave in a specific exercise involving a train and an Indian receiver can be determined by converting the distance to meters and applying the relevant formula.
What units are used to express the speed, distance, and delay of a wave?
The speed of a wave is expressed in meters per second, the distance in meters, and the delay in seconds.
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Summary
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Wave Celerity and Delay Calculation in Medium
- A progressive mechanical wave propagates through a medium without transporting matter, with its speed referred to as celerity. The delay of a wave, denoted by the Greek letter tau, represents the time taken for the wave to travel a distance between two points in the medium, expressed in meters per second for speed, meters for distance, and seconds for delay.
- To calculate the delay of a sound wave in a rail, one must use the relationship between the wave's speed, the distance traveled, and the delay. In a specific exercise where a train emits a sound wave and an Indian receives it 6.5 km away, converting the distance to meters and applying the formula reveals a delay of 1.2 seconds between emission and reception.
