Concept explainers
(a)
To Calculate: The shockwave that makes an angle with the direction of the airplane’s motion.
(a)
Answer to Problem 60P
The shockwave that makes an angle with the direction of the airplane’s motion is
Explanation of Solution
Given:
Speed of sound
Mach number
Formula used:
Calculation:
The sine of the angle is equal to the ratio of the velocity of sound to the velocity of an object and it is the reciprocal of Mach number.
Mathematically,
Where,
Now, substitute the values in the equation,
Alternative solution,
The shock wave angle is
Conclusion:
The shockwave that makes an am angle with the direction of the airplane’s motion is
(b)
To Calculate: The time that a person on the ground can hear the shock wave after an airplane directly overhead.
(b)
Answer to Problem 60P
The time that a person can hear a shock wave after an airplane flying directly overhead is
Explanation of Solution
Given:
Height of airplane
The velocity of the airplane,
Shock wave angle
Formula used:
Calculation:
To find the time that a person can hear a shock wave, use the following equation.
Conclusion:
The time that a person can hear a shock wave after an aeroplane flying directly overhead is
Chapter 12 Solutions
Physics: Principles with Applications
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