The AREA of the shaded region is the moving object's displacement.
Buddy, I think you need to evaluate your question and fix it. Because it's not making any sense, whatsoever.
Answer:
As with any wave the speed of sound depends on the medium in which it is propagating.
Explanation:
The correct answer for this question is letter "E.. The frequency of the resultant wave decreases." The magnetic fields inside the two solenoids compare can give t<span>he frequency of the resultant wave decreases, given two solenoids, with current twice as great and 4 times as many coils and 3 times long.</span>