Concept explainers
The two sources shown in Fig. 23-4 emit identical beams of sound
Fig. 23-4
maximum intensity, that is, loud sound. As one moves from P toward Q, the sound decreases in intensity. (a) How far from P will a sound minimum first be heard? (b) How far from P will a loud sound be heard once again?
(a)
The distance from P at which a minimum sound first be heard if two sources emit identical beams of sound
Answer to Problem 62SP
Solution:
Explanation of Solution
Given data:
The wavelength of sound is
Distance between point
Distance between point
Formula used:
The minimum intensity of sound at any point is written as follows:
Here,
Here,
Explanation:
Consider that the minimum sound is heard at a distance
Consider the expression for minimum intensity at distance
Point
Substitute
Conclusion:
The distance from point P at which minimum sound is heard is
(b)
The distance from P at which a loud sound is again heard if two sources emit identical beams of sound
Answer to Problem 62SP
Solution:
Explanation of Solution
Given data:
The wavelength of sound is
Distance between point
Distance between point
Formula used:
The maximum intensity of sound at any point is written as
Here,
Here,
Explanation:
Consider that the maximum sound is heard at a distance
Write the expression for maximum intensity at distance
Point
Substitute
Conclusion:
Therefore, the distance from point P at which the maximum sound is heard is
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Chapter 23 Solutions
Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
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