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   ocr: FORMULA: FREQUENCY Frequency (F) == number of waves (w)+ time (t) Frequency 1S measured in hertz (Hz)and time in seconds (s). EXAMPLE: Ifa person standing by the edge ofthe - sea counts ten waves in one minute (60 s),what is the trequency oft the waves? SOLUTION: F=w+t =10+60s 0.17 Hz