Concept explainers
(a)
To Find:The frequencies that can be heard by visitor’s ear placed near the ends of the pipes.
(a)
Answer to Problem 67GP
Frequencies that can be heard by visitor’s ear placed near the ends of each pipe are calculated:
Explanation of Solution
Given:
Pipe length
Pipe length
Pipe length
Pipe length
Pipe length
Formula used:
Here
Calculation:
The pipe is opened at both the ends,
Therefore, the frequency is calculated by the following equation,
Where,
Substitute the values in the given equation, frequency,
For the pipe length
For the pipe length
For the pipe length
For the pipe length
For the pipe length
Conclusion:
Frequencies that can be heard by visitor’s ear placed near the ends of each pipe are calculated.
(b)
To Explain: The display works better on noisy day than on the quiet day.
(b)
Explanation of Solution
Introduction:
A noise is an unwanted sound andconsidered as unpleasant, loud or disruptive to hear. The noise and sound are indistinguishable as both are caused due to the vibrations through a medium, such as air or water.
From numerous experiments, it can be concluded that the display works better on a noisy day than the quiet day becausethe vibrational waves activate the systems function. The signals can be enhanced by noise and improve the behaviour.
If the intensity of noise is increased, anoptimal noise level allows people to hear, and feel better. But too much noise is not desirable because that degrades the performance of the display.
Conclusion:
The vibrations on a noisy day are more and they can activate the weak signals.
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