An object moves in simple harmonic motion described by the given equation, where t is measured in seconds and d in meters . Find the maximum displacement, the frequency, and the time required for one cycle.d = 6 sin 3t meters
A. displacement = 6 meters; period = 
seconds; f = 
? oscillations/second
B. displacement = -6 meters; period = 
? seconds; f = 
oscillations/second
C. displacement = 6 meters; period = 3 ? seconds; f = 
oscillations/second
D. displacement = 6 meters; period = 
? seconds; f = 
oscillations/second
Answer: D
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