Answered

A duck floating on a lake oscillates up and down

5.0 times during a 10.-second interval as a

periodic wave passes by. What is the frequency

of the duck’s oscillations?

(1) 0.10 Hz (3) 2.0 Hz

(2) 0.50 Hz (4) 50. Hz

Verified Answer :

Kalahira

The answer is (2) 0.50 Hz. The frequency (f) of oscillation is the number of oscillations (n) per time (t) in seconds: f = n/t. A duck floating on a lake oscillates up and down 5.0 times (n = 5.0) during a 10.-second interval (t = 10.0 s). So, the frequency of duck's oscillations is: f = 5.0/10.0 s = 0.50 1/s = 0.50 Hz.Hope I helped! :) Cheers!

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