The frequency of an electric razor in Europe that completes 50 vibrations in 1 s has a frequency of
A. 50 Hz with a period of 1/50 s.
B. 50 Hz with a period of 50 s.
C. 1/50 Hz with a period of 50 s.
D. 1/50 Hz with a period of 1/50 s.
Answer: A
Environmental & Atmospheric Sciences
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