A Stationary Source S Generates Circular Outgoing Waves on a Lake.The

question 65

Multiple Choice

A stationary source S generates circular outgoing waves on a lake.The wave speed is 5.0 m/s and the crest-to-crest distance is 2.0 m.A person in a motor boat heads directly toward S at 3.0 m/s.To this person, the frequency of these waves is:

• A)1.0 Hz
• B)1.5 Hz
• C)2.0 Hz
• D)4.0 Hz
• E)8.0 Hz