The diagram shows four situations in which a source of sound S and a detector D are either moving or stationary.The arrows indicate the directions of motion.The speeds (when not zero)are all the same.(Note that the detector in situation 3 is stationary).Rank the situations according to the apparent frequency of the source, lowest to highest.
A)1, 2, 3, 4
B)4, 3, 2, 1
C)1, 3, 4, 2
D)2, 1, 4, 3
E)None of the above

Question

The diagram shows four situations in which a source of sound S and a detector D are either moving or stationary.The arrows indicate the directions of motion.The speeds (when not zero)are all the same.(Note that the detector in situation 3 is stationary).Rank the situations according to the apparent frequency of the source, lowest to highest. 
A)1, 2, 3, 4 
B)4, 3, 2, 1 
C)1, 3, 4, 2 
D)2, 1, 4, 3 
E)None of the above

Quizplus · Accepted Answer

The Answer of The diagram shows four situations in which a source of sound S and a detector D are either moving or stationary.The arrows indicate the directions of motion.The speeds (when not zero)are all the same.(Note that the detector in situation 3 is stationary).Rank the situations according to the apparent frequency of the source, lowest to highest. 
A)1, 2, 3, 4 
B)4, 3, 2, 1 
C)1, 3, 4, 2 
D)2, 1, 4, 3 
E)None of the above

The Diagram Shows Four Situations in Which a Source of Sound