What is the frequency of this wave?
A. 4 Hz
B. 5 Hz
C. 6 Hz
D. 10 Hz
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Answer: 0.5 HZ
Explanation: Frequency refers to the number of occurrences of a periodic event per time and is measured in cycles/second. In this case, there is 1 cycle per 2 seconds. So the frequency is 1 cycles/2 s