a swimming duck produces a bow wave attached to the duck. the angle of the bow...
a swimming duck produces a bow wave attached to the duck.
the angle of the bow wave opens wider, narrows down or remains constant as the duck decreases its speed?
Homework Answers
The velocity of the duck is also proportional to the frequency of its paddling; each cycle gets you that far (by a fixed distance δx), so Vduck = δx⋅f. So if you compute the ratio of the velocities, as in the Čerenkov formula at the top, you get a constant angle because the frequency f cancels.
Therefore, the angle of the bow wave remains constant as the duck decreases it's speed.
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